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Begonia crocea C.-I Peng. A, Habit; B, Leaf, showing upper surface; C, Distal portion of petiole; D, Inflorescence; E, Inflorescence, showing rear surfaces of staminate flowers; F, staminate flower; G, Androecium; H, Carpellate flower, adaxial view; I, Carpellate flower, lateral view; J, Fruit in early stage; K, Middle cross section of immature capsule. (All from the same plant from which the holotype, Ching-I Peng 18032-A , HAST, was taken.)
Source publication
Begonia crocea C.-I Peng, a new species from Yunnan province, China and B. xanthina Hook., a new distributional record for China are here reported and fully illustrated. Both of them are assignable to Begonia sect. Platycentrum. Unlike the great majority of Chinese species with white to pink flowers, B. crocea and B. xanthina are remarkable for bea...
Citations
... Peng et al., 2006; 2 Huang & Shui, 1994 ...
Begonia colliculata is described and illustrated with photographs from Nam Kading National Protected Area, in the Bolikhamxai Province of Laos.
... The stamens have distinctive very long connectives and are arranged in a cylindrical androecium. The description for the female flowers was augmented using Peng & Leong (2006). The only other yellow flowered Begonia in the study areas is B. flaviflora which has deeply lobed leaves. ...
Following a taxonomic revision of Begonia L. (Begoniaceae, Cucurbitales) from Northeast India based on 332 herbarium specimens, 38 species are confirmed to occur in the region, of which ten are endemic. One new species is described, Begonia koelzii R.Camfield sp. nov., in B. sect. Platycentrum (Klotzsch) A.DC. One species is reduced into synonymy; B. barbata Wall. is now a synonym of B. thomsonii A.DC. Three species, B. difformis (Irmsch.) W.C.Leong, C.I Peng & K.F.Chung, B. labordei H.Lév. and B. handelii Irmsch., are reported new for India, and B. lushaiensis C.E.C.Fisch. is reinstated as an accepted species, having previously been synonymised under B. modestiflora Kurz. A key to the species in the region and preliminary conservation assessments are presented.
... To our knowledge, chromosome numbers of about 30 taxa have been reported for species in this section (e.g. Ye et al. 2004;Peng et al. 2006;Li et al. 2005). The karyotypes show wide variation in number, especially in Taiwanese Begonia (Oginuma and Peng 2002). ...
The flora of Myanmar is under-collected compared with all other tropical Asian countries. An unknown Begonia was grown from seeds collected from a limestone hill in Central Myanmar, and compared with potentially allied species.
The unknown Begonia is rhizomatous, has peltate leaves, 2-locular ovaries, and is evergreen. It is clearly assignable to sect. Platycentrum. Only two other species of Begonia, B. josephii and B. subperfoliata, in Myanmar have peltate leaves, but they are deciduous tuberous plants with 3-locular ovaries and belong to sect. Diploclinium.
Thorough studies of literature and herbarium materials support the recognition of a new species, Begonia wui-senioris, which is fully described and illustrated. Begonia wui-senioris has the lowest chromosome number (2n = 14) for the genus.
... In continuation of our studies of Asian Begonia (e.g., Hughes et al., 2011;Ku et al., 2008;Liu et al., 2007;Nguyen et al., 2010;Peng and Ku, 2009;Peng et al., 2006aPeng et al., ,b, 2007Peng et al., , 2008aPeng et al., ,b, 2010, we report the discovery of another undescribed species, B. chongzuoensis Yan Liu, S. M. Ku & C.-I Peng (sect. Coelocentrum), from a karst limestone hill in Guangxi, China. 2 suborbicular, base rounded or slightly cordate, margin usually eciliate, sometimes remotely ciliate, apex rounded, 11-14.5 mm long, 11-15 mm wide, white or slightly pinkish, glabrous; inner 2 tepals obovate or narrowly so, base cuneate, margin eciliate, apex obtuse or rounded, 9-11 mm long, 3.5-5 mm wide, white, glabrous; androecium zygomorphic, subglobose, stamens 25-35, golf-clubshaped; filaments subequal, 1.2-3 mm long, nearly free; anthers ± ascending, 2-locular, slightly compressed, obovoid, connective apex emarginate, 1-1.5 mm long, 0.7-1 mm wide, yellow. ...
Begonia chongzuoensis Yan Liu, S. M. Ku & C.-I Peng (sect. Coelocentrum), a new species from Guangxi Zhuangzu Autonomous Region, China, is here described and illustrated. A somatic chromosome number of 2n = 30 was determined. Begonia chongzuoensis somewhat resembles B. obliquifolia S. H. Huang & Y. M. Shui, from which it differs by the moderately to sparsely setulose leaf surface; glabrous inflorescences, flowers and fruits; and crescent-shaped abaxial wing of the fruit. The new species is known only from a limestone hill in western Guangxi.
... K. Chen—were described (Peng et al., 2005). IncontinuationofoursystematicstudiesofAsianBegonia (Fang et al., 2006; Ku et al., 2006; Peng et al., 2006a; Pengetal.,2006b;Guetal.,2007;Liuetal.,2007;Peng et al., 2007; Ku et al., 2008; Peng et al., 2008a; Peng et al.,2008b),wedocumenthereathirdnaturalhybrid,B.× ...
A new natural hybrid, Begonia xchungii C.-I Peng & S. M. Ku, from central Taiwan, is described and illustrated. Based on its morphology, geographical distribution, pollen stainability, seed set, and cytology, and on experimental hybrids, we conclude that B. xchungii is a natural hybrid between B. palmata D. Don [sect. Platycentrum (Klotzsch) A. DC.] and B. longifolia Blume [sect. Sphenanthera (Hassk.) Warb.].
... Moreover, leaf margin in B. xanthina is sinuately denticulate while in B. flaviflora it is undulate and lobed (Fig. 2). The colour of the flower also slightly differs; dark yellow in B. xanthina (Peng 2006), but pale yellow in B. flaviflora. ...
During the recent botanical expedition to Ilam, Eastern Nepal, two specimens of Begonia with yellow flowers were collected at an elevation of 2170–2240 m. As all of the Begonia species so far recorded in Nepal (Press et al. 2000) have white, pink or dark pink coloured flowers, these collections were suggested to be a new record for Nepal. These specimens were crosschecked with the protologue texts of B. flaviflora H. Hara (1970) and confirmed that they are Begonia flaviflora newly recorded for Nepal Himalaya. This finding extends the range of its distribution further to east Nepal (Fig. 1). Based on the new collections detailed description and illustration are provided.
... China is endowed with about 150 species of Begonia, which are divided into nine sections (Ku, 1999;Shui, Peng & Wu, 2002). In recent years, many new taxa have been described from China (Guan & Tian, 2000;Qian, 2001;Shui, 2002a, b;Tebbitt & Guan, 2002;Fang, Wei & Qin, 2004;Ku, Peng & Liu, 2004;Shui & Chen, 2004Ye et al., 2004;Li et al., 2005;Peng, Chen & Leong, 2005;Peng, Ku & Leong, 2005;Xing et al., 2005;Fang et al., 2006;Ku, Liu & Peng, 2006;Peng, Leong & Shui, 2006). ...
Begonia gigabracteata H.Z. Li & H. Ma sp. nov. (Begonia section Diploclinium, Begoniaceae) is described and illustrated from North Guangxi Zhuang Autonomous Region, south-west China. Its chromosome number (2 n = 30) and pollen and seed micromorphology are reported. This species grows in ravines on damp or slightly moist limestone. It is morphologically similar to B. summoglabra T.T. Yü (section Reichenheimia) and B. labordei H. Lél. (section Diploclinium). However, it differs by its sparse glandular hairs, number of perianth segments, colour of venation on the abaxial blade, and unique heteromorphous bracts. A line drawing and plate of B. gigabracteata and a photograph of the type of B. summoglabra are presented as an aid to identification. © 2008 The Linnean Society of London, Botanical Journal of the Linnean Society, 2008, 157, 83–90.
... Diploclinium (B. pulvinifera, Peng et al., 2006); and sect. Platycentrum (B. ...
... Platycentrum (B. coptidifolia, Ye et al., 2004; B. rubinea, Li et al., 2005; B. crocea, Peng et al., 2006). In this study we report an additional distinctive new species, Begonia aurantiflora, from the limestone areas in Guangxi, China. ...
Begonia aurantiflora C.-I Peng, Yan Liu & S. M. Ku, a new species of sect. Coelocentrum from Guangxi Zhuangzu Autonomous Region, China, is described and illustrated. Its somatic chromosome number, 2n = 30, is here reported. Begonia aurantiflora is similar to B. debaoensis, differing in the tepals orange; leaves adaxially sparsely long-pilose, fully developed mature leaves often with whitish or silver-white ring-shaped belt on upper surface, peduncle, outer tepals and ovaries moderately pilose or glandular hairy. Begonia aurantiflora is the only species with orange flowers in sect. Coelocentrum. It is also a very rare species with a highly restricted distribution.
... In continuation of our research on easternAsian Begonia (Peng et al., 1988;Chen, 1990, 1991;Peng and Sue, 2000;Peng and Chiang, 2000;Chiang et al., 2001;Oginuma and Peng, 2002;Shui et al., 2002;Yeetal.,2004;Kuetal.,2004;Pengetal.,2005a,b,c;Liuetal.2005;Lietal.,2005;Pengetal.,2006;Fanget al., 2006;Peng et al., 2006), we report the discovery of fournewspeciesofBegoniasect.Coelocentrumfromthe limestoneareasinGuangxi,China. I Peng, Wai-Chao Leong, Shin-Ming Ku & Yan Liu 19712-A(holotype:HAST;isotypes:IBK).德保秋海棠 ...
Four new species of Begonia (sect. Coelocentrum), namely B. debaoensis, B. pseudodaxinensis, B. pseudoleprosa and B. semiparietalis, from the limestone areas in Guangxi Zhuangzu Autonomous Region, southern China are described and illustrated. A somatic chromosome number of 2n = 30 is determined for three of them. Begonia debaoensis resembles B. bonii Gagnep., differing in having smaller leaves; a slender rhizome with long internodes; bicolored outer tepals that are pink toward the margins and whitish in the middle; and bearing abnormal, feminized stamens on staminate flowers. It is perhaps of hybrid origin. Begonia pseudodaxinensis is similar to B. daxinensis T.C. Ku, differing in the leaves being entirely green and without white maculation; the stipule apex obtuse or emarginate; and the rhizome stout and nearly glabrous. Begonia pseudoleprosa bears a superficial resemblance to B. leprosa Hance (sect. Leprosae), differing in the fruits being winged, trigonous obovoid-ellipsoid and with parietal placentation. It also resembles B. bonii Gagnep., differing in the leaves being subcoriaceous, nearly flat and very sparsely setulose or subglabrous on the adaxial surface; and petioles and the main veins on the lower leaf surface being appressed hairy. Begonia semiparietalis is also somewhat similar to B. bonii Gagnep., differing in the leaves having white maculation along main veins and the upper surface sparsely setose-pilose; ovaries and fruits long glandular-pilose; placentation parietal on upper half of the ovary and axile on the lower half.
Ching-I Peng, the most prolific and internationally recognized Taiwanese plant taxonomist of his generation, passed away on May 1, 2018. Dr. Peng was an eminent worker on the taxonomy of East Asian plants and the genus Ludwigia, and the foremost expert on Asian Begonia. He served as associate editor, co-editor in chief, and editor-in-chief of Botanical Studies and its predecessor Botanical Bulletin of Academia Sinica during the period 1992–2016. He gathered over 25,000 plant specimens, name 121 plant taxa, and has left a remarkable legacy of literature, collaborations and collections. This article summarizes Dr. Peng’s academic career and commemorates his enduring contribution.
