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Polish Botanical Journal 58(2): 525–537, 2013 DOI: 10.2478/pbj-2013-0038 Assessment of liverwort And hornwort florA of nilgiri hills, western ghAts (indiA) Praveen Kumar verma1, afroz alam & K. K. rawat Abstract. Bryophytes are an important part of the lora of the Nilgiri Hills of Western Ghats, a biodiversity hotspot. This paper gives an updated catalogue of the Hepaticae of the Nilgiri Hills. The list includes all available records, based on the authors’ collections and those in LWU and other renowned herbaria. The catalogue of liverworts indicates their substrate and occurrence, and includes several records new for the Nilgiri bryolora as well as for Western Ghats. The list of Hepaticae contains 29 families, 55 genera and 164 taxa. The list of Anthocerotae comprises 2 families, 3 genera and 5 taxa belonging to almost all life form types. Key words: Western Ghats, biodiversity hotspot, Tamil Nadu, Bryophyta, Hepaticae, Anthocerotae Praveen Kumar Verma, Rain Forest Research Institute, Deovan, Sotai Ali, Post Box # 136, Jorhat – 785 001 (Assam), India; e-mail: pkverma_bryo@yahoo.co.in Afroz Alam, Department of Bioscience and Biotechnology, Banasthali University, Tonk – 304 022 (Rajasthan), India; e-mail: afrozalamsafvi@gmail.com K. K. Rawat, CSIR-National Botanical Research Institute, Rana Pratap Marg, Lucknow – 226 001, India; e-mail: drkkrawat@ rediffmail.com IntroductIon The Nilgiri Hills of Tamil Nadu are a part of the Nilgiri Biosphere Reserve (NBR), recognized under the Man and Biosphere (MAB) Program of UNESCO. These hills (junction of Eastern Ghats and Western Ghats) are formed by northsouth hill ranges rising from the coastal plains of peninsular India, with a few isolated peaks such as Dodabetta Peak (2667 m) and Mukuruti Peak (2554 m). The Nilgiris lie between 10°01′ to 11°47′ latitude north and 76°12′ to 77°15′ longitude east, covering ca 2549 km2. The area receives the southeast and northwest monsoons, making for very rich bryolora, especially that of epiphytes. Tropical montane evergreen forest, known as shola forest, occurs at higher elevations of the Western Ghats and its associated hill range in southern India. It is discontinuous and patchy, usually restricted to sheltered valleys, hollows and depressions, and surrounded by grasslands. Some of the main forest types in the area are wet evergreen forest, sub1 Corresponding author tropical hill forest, montane wet temperate forests, mixed deciduous, montane evergreen (shola grassland) (see also Champion & Seth 1968; Hockings 1989; Mohandass & Davidar 2009). For south India there are several provincial liverwort loras, including monumental works on liverworts by Montagne (1842) and Gottsche et al. (1845–1847). Many species are given in revisions of Indian Cheilolejeunea (Asthana et al. 1995), Indian Metzgeriaceae (Srivastava & Udar 1975a), Indian Brachioelejeunea (Awasthi & Srivastava 1988), Indian Fossombroniaceae (Srivastava & Udar 1975b), Indian Anueraceae (Srivastava & Udar 1976); Indian hornworts (Asthana & Srivastava 1991), Indian Cololejunea (Asthana & Srivastava 2003), Indian Lepidoziineae (Sharma & Srivastava 1993), Indian Geocalycaceae (Srivastava & Srivastava 2002), Indian Lopholejeunea (Awasthi et al. 2000) and a global revision of Cyathodium (Srivastava & Dixit 1996). There are recent papers on different aspects of the bryophytes of southern India (Srivastava et al. 1989; Srivastava & Sharma 2000; Unauthenticated | 117.211.84.67 Download Date | 1/10/14 7:58 AM POLISH BOTANICAL JOURNAL 58(2). 2013 526 Srivastava et al. 2002; Srivastava & Verma 2004a, b; Nair et al. 2005; Srivastava et al. 2006a, b; Alam et al. 2007, 2011; Nair & Madhusoodanan 2007; Verma & Srivastava 2007, 2008a, b, 2010, 2011a, b, c, d; Madhusoodanan et al. 2007; Pócs et al. 2007; Nair et al. 2008, 2009a, b, 2012a, b; Daniels 2010; Verma 2010; Alam & Srivastava 2011; Verma et al. 2011; Alam 2012). The Nilgiri Hills of Tamil Nadu host a valuable gene pool and signiicant bryodiversity. Preliminary reports on the liverworts of the area appeared in the middle of the 19th century, based largely on collections made by Europeans. Montagne’s (1842) pioneer work on bryophytes of the Nilgiri Hills mentioned some hepatics, followed by Gottsche et al. (1845–1847) and later by Mitten (1861) who provided the irst documentation of the liverworts of the Nilgiri Hills and described 20 species. Most of his names have been replaced due to changes in their systematic position. Chopra (1938) also listed several liverworts from the area. To extend our knowledge of the bryophytes of the Nilgiri Hills, we made an exhaustive survey of the entire area, collected and identiied representative specimens, and made a detailed analysis of their diversity in the area on the basis of fresh collections and a critical survey of earlier reports and collections available in the Lucknow University Hepatic Herbarium (LWU) or overseas herbaria including NY, G, FH, NICH, STR and JE. The survey produced some noteworthy developments in the systematics of the bryophytes of remote localities in the Nilgiri Hills. materIal and methods We collected and studied nearly 7000 herbarium specimens (mainly Hepaticae and Anthocerotae). They are preserved in the Bryophyte Herbarium, University of Lucknow (LWU). As different species grow in different seasons, generally we collected samples in summer and winter every year from 2000 to 2008 in the Nilgiri Hills, also making ecological observation in the ield. At the same time we studied herbarium accessions collected by earlier workers. We identiied and authenticated several taxa from type/authentic specimens obtained on loan from different International herbaria (FH, G, JE, NICH, NY, STR) and exsiccatae (Hepaticae Selectae et Criticae edited by Fr. Verdoorn; Hepaticae Japonicae edited by S. Hattori). The treatment of taxa mainly follows Schuster (1984), Inoue (1984), Gradstein et al. (2002), So (2003), Engel and Merrill (2004), Zhu and Gradstein (2005) and Fuselier et al. (2011). results and dIscussIon This work presents 169 taxa belonging to 58 genera and 31 families of Hepaticae and Anthocerotae. Seventy-ive of the 169 taxa are reported here as obligate epiphytes, mostly members of the Plagiochilaceae, Porellaceae, Frullaniaceae, Lejeuneaceae, Radulaceae and Metzgeriaceae. The liverwort lora of the Nilgiri Hills consists of two phylogenetically related classes: Jungermanniidae and Marchantiidae. The Jungermanniidae include 43 genera and 151 species under 9 suborders and 23 families, of both thallose and leafy organization, belonging to Metzgeriales (with 5 genera and 13 species) and Jungermanniales (a highly diversiied group with 38 genera and 143 species). The class Marchantiidae includes 12 genera and 28 species under 2 suborders and 8 families in the area, while class Anthocerotophyta includes 3 genera and 5 species under 2 families (Tables 1 & 2, Figs 1–18). During this study we discovered 8 liverwort taxa new for the Nilgiri Hills and published them elsewhere: Cololejeunea nilgiriensis S. C. Srivast. & G. Asthana (from Avalanche; Asthana & Srivastava 2003), Taxilejeunea nilgiriensis P. K. Verma & S. C. Srivast. [from Kotagiri (Kengarai); Verma & Srivastava 2008a, b], Lejeunea srivastavae P. K. Verma & K. K. Rawat (from Ootacamund; Verma & Rawat 2013), Microlejeunea udarii P. K. Verma & S. C. Srivast. (from Pykara; Verma & Srivastava 2011a, b, c, d), Telaranea indica (S. C. Srivast. & P. K. Verma) A. E. D. Daniel & P. Daniel (from Governorsholai, as Arachniopsis indica S. C. Srivast. & P. K. Verma; Srivastava & Verma 2004b), Gongylanthus indicus S. C. Srivast. & P. K. Verma (from Naduvattam and Yellamalai; Srivastava & Verma 2004c), Metzgeria coorgense S. C. Srivast. & Sm. Srivast. [from Ootacamund and Mercara (Karnataka); Srivastava & Srivastava 2002], and Solenostoma nilgiriensis (A. Alam, Unauthenticated | 117.211.84.67 Download Date | 1/10/14 7:58 AM P. K. VERMA eT AL.: LIVERWORT AND HORNWORT FLORA OF NILGIRI HILLS, WESTERN GHATS 527 table 1. Genera and families of Hepaticae and Anthocerotae in the Nilgiri Hills. Phylum / Class Families Marchantiophyta / Hepaticae Anthocerotophyta /Anthocerotae Total Ad. Kumar & S. C. Srivast.) Vaňa & D. G. Long [from Ootacamund (Theetkul), as Jungermannia nilgiriensis A. Alam, Ad. Kumar & S. C. Srivast.; Alam et al. 2007]. ecologIcal observatIons In terms of habitat preference, the liverworts and hornworts of Nilgiri can be grouped as terrestrial or epiphytic. Apart from soil-covered rocky slopes and dense broadleaved forests, the Nilgiri Hills also have a number of waterfalls, providing favorable climate and topography for a variety of terrestrial bryophytes, the predominant form. Springs, ponds, streams, pools, falls, seeps and dripping water create extremely wet conditions, as found at Laws Falls, Pykara Waterfalls, St. Catherine Waterfall and Kalahatti Waterfall, which support the growth of taxa such as Dumortiera hirsuta, Pallavicinia lyellii, Riccia luitans, Riccardia levieri, Phaeoceros spp. and Anthoceros spp. The steep slopes and rocks of the entire region favor saxicolous vegetation such as Asterella wallichiana, A. khasiana, exormotheca ceylonensis, Targionia spp., Plagiochasma spp. and Reboulia hemisphaerica. Some leafy liverworts including Jungermannia lanceolata, J. tetragona, J. truncata, Notoscyphus lutescens., Cephaloziella sp., Cephalozia sp, Lophocolea spp., Heteroscyphus argutus, H. perfoliatus, Lethocolea javanica, Plagiochila acuta, P. indica and Porella acutifolia are found in grassland or on soil-covered rocks. Some terricolous taxa grow as small turfs (Jungermannia sp., Hebertus spp., Gottschelia schizopleura) and mats (Lunularia cruciata, Marchantia sp., Pallavicinia lyellii). The epiphytic bryophytes of Nilgiri Hills are signiicant in terms of number but also phytosociology. They are found mostly where the conditions 29 2 31 Genera Species 55 3 58 164 5 169 are humid. The entire region of Dodabetta, Pykara and Mukuruthy National Park receives ca 1200 mm precipitation annually. The epiphytic liverworts of the area form corticolous and epiphyllous communities. The bark characteristics of the phorophyte – bark pH (always slightly acidic), bark texture (smooth, rough), exposure to the physical environment, tree age – play an important role for corticolous communities. As a habitat for epiphytic liverworts, a tree can be broadly divided into three regions: the base (up to 50 cm above soil level), characterized by the growth of species of Lophocolea, Heteroschyphus, Plicanthus, Lejeunea discreta; the trunk region with large primary limbs, which host liverworts such as Ptychanthus, Radula, Lopholejeunea, Porella, Plagiochila and Frullania; and twigs and small secondary branches with leaves, providing substrate for liverworts such as Metzgeria spp., Lejeunea spp., Frullania tamarisci, Plagiochila spp. and Cheilolejeunea spp. The epiphyllous forms are most typical and require more relative humidity. Here they are restricted to the leaves of young trees. Different life forms of epiphytic liverworts were recorded in the Nilgiri Hills: short turfs (Lejeunea spp), pendants (Frullania tamarisci, Ptychanthus striatus), wefts (Bazzania tridens), mats (Radula spp., Leucolejeunea sp.), fans (Porella perrottetiana) and dendroid forms (e.g., Plagiochila fruticosa). The liverwort diversity of the Nilgiri Hills is also affected by the altitudinal gradient, as some characteristics of the taxa may be governed by environmental factors. In the lower Nilgiri foothills the representation of terrestrial liverworts is at maximum; the absence of epiphytic liverworts in lower areas may be attributed to the drier conditions there: lower humidity, moisture and dew. With increasing altitude the temperature drops and relative humidity rises, enhancing the growth of epiphytic liverworts. Unauthenticated | 117.211.84.67 Download Date | 1/10/14 7:58 AM POLISH BOTANICAL JOURNAL 58(2). 2013 528 1 2 3 4 5 6 7 8 9 figs 1–9. 1 – Fossambronia wondraczekii (Corda) Dumort., 2 – Plagichasma rupestre (G. Forst.) Steph., 3 – Anthoceros subtilis Steph., 4 – Pheoceros laevis (L.) Prosk. subsp. laevis, 5 – Asterella khasiana (Griff.) Grolle, 6 – Asterella wallichiana (Lehm.) Grolle, 7 – Lophocolea bidentata (L.) Dumort., 8 – Pallavicinia lyellii (Hook.) Gray, 9 – Cyathodium cavernarum Kunze. Scale bars: 1 = 1 cm, 2 = 4 cm, 3, 5, 6 & 8 = 3 cm, 4 & 9 = 2 cm. Human activities and population pressures coupled with the developing tourism industry in the area have changed the natural vegetation, posing a serious threat to the survival of a number of the region’s loristic elements. The inlux of tourists indirectly affects the environment. Ooty, a major tourist destination, attracts great numbers of tourists the year round. Any environmental impact in major urban areas at higher elevations such as Ooty, Coonoor and Kotagiri can affect sites at lower locations (Daniels 1992). Many hotels and other tourism facilities have been constructed. Continuous trafic Unauthenticated | 117.211.84.67 Download Date | 1/10/14 7:58 AM P. K. VERMA eT AL.: LIVERWORT AND HORNWORT FLORA OF NILGIRI HILLS, WESTERN GHATS 529 10 11 12 13 14 15 16 17 18 figs 10–18. 10 – Targionia hypophylla L., 11 – Marchantia paleacea Bertol., 12 – Dumortiera hirsuta (Sw.) Nees, 13 – Cephaloziella kiaerii (Austin) S. W. Arnell, 14 – Bazzania tridens (Reinw., Blume & Nees) Trev., 15 – Frullania tamarisci subsp. obscura (Verd.) S. Hatt., 16 – Plagiochila indica Mitt. ex Steph., 17 – Ptychanthus striatus (Lehm. & Lindenb.) Nees, 18 – Solenostoma strictum (Schiffner) Vaňa, Hentschel & J. Heinrichs, Scale bars: 11 = 4 cm, 12 = 3 cm, 13 = 1 cm, 14, 16 & 18 = 2 cm, 15 & 17 = 5 cm. has produced heavy automobile pollution in the area. Grazing is also taking its toll in areas like Masinagudi, which is a livestock hub with an almost 1:1 ratio of cattle to humans (Daniels 1996). Free grazing in such areas poses a constant threat to surface lora. The slopes of the Nilgiri forests are being cleared for agriculture, destroying forest patches and consequently the epiphytic lora, and also increasing the threat of landslides, which are more common now than earlier. Observations during ield survey work in the area in recent years have revealed the absence of Unauthenticated | 117.211.84.67 Download Date | 1/10/14 7:58 AM POLISH BOTANICAL JOURNAL 58(2). 2013 530 table 2. Enumeration of liverwort and hornwort taxa of Nilgiri Hill, (Tamil Nadu), Western Ghats. C – corticolous, E – epiphyllous, T – terricolous. Family & Genus Species Substrate MARCHANTIOPYTA Stotler & Crand.-Stotl. metzgerIales R. M. Schust. emend. Schljak. Fossombroniaceae Hazsl. Fossombronia Raddi 1. F. cristula Aust. 2. F. himalayensis Kash. 3. F. pusilla (L.) Dumort. 4. F. wondraczekii (Corda) Dumort. T T T T Pallaviciniaceae Migula emend. R. M. Schust. Pallavicinia S. F. Gray 5. P. lyellii (Hook.) S. F. Gray T Metzgeriaceae H. Klinggr. Metzgeria Raddi 6. M. pubescens (Schrank) Raddi 7. M. furcata (L.) Dumort. 8. M. indica Udar & S. C. Srivast. 9. M. consanguinea Schiffn. 10. M. pandei S. C. Srivast. & Udar 11. M. coorgense S. C. Srivast. & Sm. Srivast. C C C, T C C C Aneuraceae H. Klinggr. Aneura Dumort. Riccardia S. F. Gray 12. A. pellioides (Horik.) Inoue 13. R. levieri Schiffner T T JungermannIales H. Klinggr Herbertaceae Mull.Frib. ex Fulford & Hatcher Herbertus S. F. Gray 14. H. nilgerriensis (Steph.) H. A. Mill. 15. H. pinnatus (Steph.) H. A. Mill. T T 16. P. hirtellus (F. Weber) R. M. Schust. 17.G. schizopleura (Spruce) Grolle C T 18. J. appressifolia Mitt. 19. J. lanceolata L. 20. J. pleidereri Amakawa & Vána 21. J. pyrilora Steph. 22. S. strictum (Schiffner) Váňa, Hentschel & J. Heinrichs 23. S. tetragonum (Lindenb.) R. M. Schust. ex Váňa & D. G. Long 24. S. truncatum (Nees) R. M.Schust. ex Váňa & D. G. Long 25. S. nilgiriensis (A. Alam, Ad. Kumar & S. C. Srivast.) Vaňa & D. G. Long 26. N. darjeelingensis Udar & Ad. Kumar 27. N. pandei Udar & Ad. Kumar 28. N. paroicus Schiffner T T T T T T T 29. D. nanum Herzog T Lophoziaceae Cavers Plicanthus R. M. Schust. Gottschelia Grolle Jungermanniaceae Rchb. Jungermannia L. Solenostoma Mitt. Notoscyphus Mitt. T T T T Scapaniaceae Migula Diplophyllum Dumort. Unauthenticated | 117.211.84.67 Download Date | 1/10/14 7:58 AM 531 P. K. VERMA eT AL.: LIVERWORT AND HORNWORT FLORA OF NILGIRI HILLS, WESTERN GHATS table 2. Continued. Family & Genus Species Substrate Arnelliaceae Nakai Gongylanthus Nees 30. G. indicus S. C. Srivast. & P. K. Verma T Geocalycaceae Klinggr. Lophocolea (Dumort.) Dumort. Heteroscyphus Schiffn. 31. L. bidentata (L.) Dumort. 32. L. heterophylla (Schrad.) Dumort. 33.L. minor Nees 34. L. muricata (Lehm.) Nees 35. H. argutus (Nees) Schiffner 36. H. perfoliatus (Mont.) Schiffner 37. H. orbiculatus A. Srivast. & S. C. Srivast. T, C T, C T T, C T, C T, C T, C 38. P. acuta Steph. 39. P. beddomei Steph. 40. P. celebica Schiffn. 41. P. duthiana Steph. 42. P. elegans Mitt. 43. P. lexuosa Mitt. 44. P. fruticosa Mitt. 45. P. ghatiensis Steph. 46. P. gracilis Lindenb. & Gottsche 47. P. indica Mitt. ex Steph. 48. P. junghuhniana Sande Lac 49. P. peradenyensis Schiffn. 50. P. sciophila Nees 51. P. semidecurrens (Lehm. & Lindenb.) Lehm. & Lindenb. 52. P. sisparensis Steph. 53. P. subtropica Steph. T, C C T, C T, C C C C C C T, C T, C C C C C C Plagiochilaceae Müll. Frib. & Herzog Plagiochila (Dumort.) Dumort. Acrobolbaceae Hodgs. Lethocolea Mitt. 54. L. javanica (Schiffn.) Grolle T 55. C. schusteri Udar & Ad. Kumar T Chonecoleaceae R. M. Schust. ex Grolle Chonecolea Mitt. Lepidoziaceae Limpr. Bazzania S.F. Gray Telaranea Spruce ex Schiffn. 56. B. oshimensis (Steph.) Horik. 57. B. tridens (Reinw., Blume & Nees) Trev. 58. T. indica (S. C. Srivast. & P. K. Verma) A. E. D. Daniel & P. Daniel T, C T, C T 59. C. arguta Nees &Mont. ex Nees 60. C. azurea Stotler & Crotz. 61. C. lunata Mitt. T T, C T Calypogieaceae (K. Müll.) Arnell Calypogeia Raddi Cephaloziaceae Migula Cephalozia (Dumort.) Dumort. 62. C. siamensis N. Kitag. 63. C. willisana Steph. Unauthenticated | 117.211.84.67 Download Date | 1/10/14 7:58 AM T T POLISH BOTANICAL JOURNAL 58(2). 2013 532 table 2. Continued. Family & Genus Species Substrate Cephalloziallaceae Douin Cephaloziella (Spruce) Schiffn. 64. C. kiaerii (Austin) S. W. Arnell T 65. J. javanica var. cardiocarpa Schiffn. T Jackiellaceae R. M. Schust. Jackiella Schiffn. Porellaceae Cavers Porella L. 66. P. acutifolia (Lehm. & Lindenb.) Trevis. 67. P. caespitans var. setigera (Steph.) S. Hatt. 68. P. campylophylla (Lehm. & Lindenb.) Trevis. 69. P. campylophylla var. ligulifera Tayl. 70. P. chinensis (Steph.) S. Hatt. 71. P. madagascariensis (Nees & Mont.) Trevis. 72. P. plumosa (Mitt.) Inoue 73. P. perrottetiana (Mont.) Trevis. T, C C T, C C C C C T, C 74. F. hampeana var. acutiloba (Mitt.) S. Hatt. 75. F. arecae (Spreng.) Gottsche 76. F. alstonii var. pleidereri S. Hatt. 77. F. campanulata Sande Lac. 78. F. ericoides (Nees ex Mart.) Mont. 79. F. grandistipula Steph. 80. F. inlexa Mitt. 81. F. muscicola Steph. 82. F. neurota Taylor 83. F. riojaneirensis (Raddi) Spruce 84. F. tamarisci subsp. obscura (Verd.) S. Hatt. C C C C T, C C C C T, C C T, C 85. M. humilis (Gottsche) Schiffner 86. L. indica Udar & U. S. Awasthi 87. L. subfusca (Nees) Schiffner 88. S. indica (Steph.) Udar & U.S. Awasthi 89. S. polycarpa (Nees) Gradst. 90. A. apiculifolia Steph. 91. A. planiuscula (Mitt.) Steph. 92. A. minutiloba Udar & U. S. Awasthi 93. S. semirepandus (Nees) Verd. 94. A. yoshinaganus (S. Hatt.) Kruijt 95. F. tristis (Steph.) Slageren 96. P. striatus (Lehm. & Lindenb.) Nees 97. D. angustifolia Grolle 98. D. ternatensis (Gottsche) Steph. 99. D. ternatensis var. lancispina Herz. 100. D. yunnanensis (P. C. Chen) Grolle & R. L. Zhu 101. L. foliicola (Horik.) R. M. Schust. 102. Metalejeunea cucullata (Reinw., Blume & Nees) Grolle C C T, C C C C C C T, C C C T, C C C C C, E C E Frullaniaceae Lorch Frullania Raddi Lejeuneaceae Cavers Mastigolejeunea (Spruce) Schiffn Lopholejeunea (Spruce) Schiffn. Schiffneriolejeunea Verd. Archilejeunea (Spruce) Schiffn. Spruceanthus Verd. Acanthocoleus R. M. Schust. Frullanoides Raddi Ptychanthus Nees Drepanolejeunea (Spruce) Schiffn. Leptolejeunea (Spruce) Schiffn. Metalejeunea Grolle Unauthenticated | 117.211.84.67 Download Date | 1/10/14 7:58 AM 533 P. K. VERMA eT AL.: LIVERWORT AND HORNWORT FLORA OF NILGIRI HILLS, WESTERN GHATS table 2. Continued. Family & Genus Species Microlejeunea (Spruce) Jack. & Seph. 103. M. punctiformis (Taylor) Spruce 104. M. udarii P. K. Verma & S. C. Srivast. 105. M. ulicina (Taylor) A. Evans 106. L. brittoniae A. Evans 107. L. caespitosa Lindenb. 108. L. cocoes Mitt. 109. L. discreta Lindenb. 110. L. lava (Sw.) Nees 111. L. srivastavae P. K.Verma & K. K. Rawat 112. L. neelgherriana Gottsche 113. L. perrottetii Steph. 114. L. stevensiana (Steph.) Mizut. 115. L. tuberculosa Steph. 116. L. wightii Lindenb. 117. L. aloba Sande Lac. 118. L. subolivacea Mizut. 119. C. trapezia (Nees) R. M. Schust. 120. C. laeviscula (Mitt.) Steph. 121. C. serpentina (Mitt.) Mizut. 122. C. udarii G. Asthana, S. C. Srivast. & A. K. Asthana 123. C. xanthocarpa (Lehm. & Lindenb.) I. Malombe. 124. T. eckloniana (Agarwal) P. K. Verma & S. C. Srivast. 125. T. nilgiriensis Verma & S. C. Srivast. 126. T. tenerrima Steph. 127. C. appressa (A. Evans) Benedix 128. C. cardiocarpa (Mont.) Steph. 129. C. latilobula (Herz.) Tixier 130. C. minutissima (Smith) Schiffn. 131. C. pseudoloccosa (Horik.) Benedix 133. C. nilgiriensis G. Asthana & S. C. Srivast. 134. C. udarii G. Asthana, S. C. Srivast. & A. K. Asthana Lejeunea Libert. Cheilolejeunea (Spruce) Schiffn. Taxilejeunea (Spruce) Schiffn. Cololejeunea (Spruce) Schiffn. Substrate C, E C C C C C T, C T, C C C C C C T, C C C T, C C C C C C C C C, E C, E C, E C, E C, E C C, E Radulaceae (Dumort.) K.Mull. Radula Dumort. 135. R. madagascariensis Gottsche 136. R. nilgiriensis Udar & Dh. Kumar 137. R. onraedtii K. Yamada 138. R. perrottetii Gottsche ex Steph. 139. R tabularis Steph. C C C C C marchantIales Limpr. Cleveaceae Cavers Athalamia Falc. 140. A. pusilla (Steph.) Kash. T 141. R. hemisphaerica (L.) Raddi 142. M. foreaui Udar &V. Chandra T T Aytoniaceae Cavers Reboulia Raddi Mannia Corda Unauthenticated | 117.211.84.67 Download Date | 1/10/14 7:58 AM POLISH BOTANICAL JOURNAL 58(2). 2013 534 table 2. Continued. Family & Genus Species Plagiochasma Lehm. & Lindenb. 143. P. cordatum Lehm. & Lindenb. 144. P. pterospermum C. Massal. 145. P. rupestre (G. Forst.) Steph. 146. A. khasiana (Griff.) Grolle 147. A. wallichiana (Lehm.) Grolle T T T T T 148. L. cruciata (L.) Dumort. ex Lindb. T 149. E. ceylonensis Meijer T 150. M. kashyapii Udar & Shaheen 151. M. paleacea Bertol. 152. M. palmata Reinw., Blume & Nees T T T 153. D. hirsuta (Sw.) Nees T 154. T. lorbeeriana K. Müll. 155. T. hypophylla L. T T 156. C. cavernarum Kunze T 157. R. crozalsii Levier 158. R. crystallina L. 159. R. stricta (Gottsche et al.) Perold 160. R. gangetica Ahmad 161. R. grollei Udar 162. R. melanospora Kash. 163. R. plana Tayl. 164. R. warnstroii Limpr. T T T T T T T T Asterella P. Beauv. Substrate Lunulariaceae H. Klinggr. Lunularia Adans. Exormothecaceae Müll. Frib. ex Grolle Exormotheca Mitt. Marchantiaceae (Bisch.) Endl. Marchantia March. Dumortieraceae D. G. Long Dumortiera Nees Targioniaceae Endl. Targionia L. Cyathodiaceae Stotler & Crand.-Stotl Cyathodium Kunze Ricciaceae Rchb. Riccia L. ANTHOCEROTOPHYTA Stotl. & Crand.-Stotl. Anthocerotaceae Dumort. Corr. Trevis emend. Hässel Anthoceros L. 165. A. angustus Steph. 166. A. subtilis Steph. T T 169. N. indica Kash. 167. P. laevis (L.) Prosk. subsp. laevis 168. P. laevis subsp. carolinianus (Michx.) Prosk. T T T Notothyladaceae (Milde) Müll. Notothylas Sull. ex A. Gray Pheoceros Prosk. some taxa earlier reported in recent collections: e.g., Acrolejeunea pycnoclada (Taylor) Schiffn., Archilejeunea apiculifolia Steph., Archilejeunea minutiloba Udar & U. S. Awasthi, Asterella leptophylla (Mont.) Grolle, Athalamia pusilla (Steph.) Kashyap, Chonocolea schusterii Udar & Ad. Kumar, Mannia forauei Udar & V. Chandra, Radula javanica Gott., Riccia melanospora Kash., Riccia warnstorfii Unauthenticated | 117.211.84.67 Download Date | 1/10/14 7:58 AM P. K. VERMA eT AL.: LIVERWORT AND HORNWORT FLORA OF NILGIRI HILLS, WESTERN GHATS Limpr., Schistochila aligera (Nees & Blume) Jack & Steph., S. glaucescens (Hook.) A. Evans and S. philippinensis (Mont.) Jack & Steph., which have not been re-collected since their original discovery in the area. A number of other taxa [e.g., Cheilolejeunea udarii, Cololejeunea nilgiriensis, exermotheca ceylonensis Meijer, Plagiochila gracilis Lindenb. Plagiochila sisparensis Steph., Reboulia hemisphaerica (L.) Raddi] are near extinction in the area due to their very low frequency of occurrence and habitat change. Some endemic taxa, for example Metzgeria nilgiriensis, Plagiochila sisparensis, Radula nilgiriensis, Taxilejeunea nilgiriensis, Microlejeunea udarii, Gongylanthus indicus, Telaranea indica, Chonocolea schusterii, Lejeunea perrottetii, Herbertus nilgiriensis, Cheilolejeunea udarii and Archilejeunea minutiloba, face the maximum risk of extinction because they have so few localities. Some taxa which are known from other countries but whose distribution within India is restricted to the Nilgiri Hills (e.g., Lethocolea javanica, Plagiochila beddomei, Gottschelia schizopleura, Plagiochila junghuhniana) are also threatened. Bryophytes, though the second-largest group of terrestrial plants, have received much less attention than vascular plants in conservation and protection planning. Some liverwort species urgently require protection and conservation to save them from extinction. Habitat destruction eliminates bryophytes earlier than many other phanerogams because they are more sensitive to environmental change. The study area, Nilgiri, is illed with lush green vegetation. Tropical evergreen trees occur at high frequency and density, providing an excellent environment for growth of bryophytes; they may serve in in situ conservation of these plants. Changes in the habit, growth rate and growth pattern of a particular species can be monitored over a period of several years and the data thus collected can be used to predict the growth potential of bryophytes during climatic change in the area. Some rare bryophyte species may be grown in a natural conservatory such as the Government Botanical Garden at Ootacamund and Sims Park at Coonoor. 535 acKnowledgements. We are grateful to Professor S. C. Srivastava, former Head of the Botany Department, Lucknow University, Lucknow and former Collaborator of the All India Coordinated Project on Taxonomy (AICOPTAX) for facilities and encouragement, the Ministry of Environment and Forests (New Delhi) for inancial assistance under AICOPTAX, and the Department of Forest and Environment (Tamil Nadu) for assistance and logistic support for the period of ield explorations. Thanks are also due to Professor Tamás Pócs for critically reading the manuscript and for valuable suggestions. references alam A. 2012. Liverworts lora of Parson’s Valley, Nilgiri Hills (Western Ghats), South India. Archive for Bryology 119: 1–20. alam a. & srIvastava S. C. 2011. Liverwort diversity in Palni Hills (Tamil Nadu), India, a checklist. 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