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| Begonia sebodensis Mazo & Rubite, in Mazo, Salatan et Rubite, 2023. DOI: 10.36253/jopt-15028 |
Abstract
A new species of Begonia sect. Baryandra, Begonia sebodensis, from Zamboanga del Norte, southwestern Philippines is described and illustrated. Begonia sebodensis is morphologically similar to B. anisoptera in obliquely ovate to widely ovate leaves, four-tepaled staminate and pistillate flowers and three locular ovary but differs in glabrescent stipules, sericeous petioles, leaf margins distantly serrate and ciliate, many-flowered inflorescences, capsule wings subequal and flat. Following IUCN criteria, we propose B. sebodensis as Endangered (EN).
Keywords: Begonia anisoptera, endemic, lithophyte, taxonomy, Zamboanga del Norte
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| Begonia sebodensis Mazo & Rubite. A. Habit; B. Stipules (st) and portion of the petioles (pe); C. Leaf adaxial surface; D. Leaf abaxial surface; E. Leaf margin; F. Pistillate flower, side view showing the ovary; G. Inflorescences, inset: front view of the staminate flower; H. Cross-section of the ovary; I. Capsules and fruit. All from K.R.F. Mazo 113. |
Begonia sebodensis Mazo & Rubite, sp. nov.
Sect. Baryandra
Similar to Begonia anisoptera in having obliquely ovate to widely ovate leaves, 4-tepaled staminate and pistillate flowers and three winged capsules. However, the new species can be easily distinguished in having stipules glabrescent (vs. densely hirsute), petioles 16.5–28.0 cm long, indumentum reddish-maroon, appressed (vs. 4–12 cm long, hairs brown and spreading), larger leaves 8–17 × 7.0–11.5 cm, distantly serrate (vs. 6–12 × 4–8 cm, entire), inflorescence cymosely branching 5–7 times (vs. 2–3 times), oblanceolate inner staminate and pistillate tepals (vs. obovate to cuneiform) with rounded apex (vs. truncate to slightly retuse), capsule recurved or pendulous (vs. splash cup), wings subequal and flat (vs. strong-ly unequal, abaxial wing cucullate, lateral wings curved)
Etymology: The specific epithet derived from the locality [barangay Sebod] where the new species was collected.
Kean Roe F. Mazo, Noel L. Salatan and Rosario R. Rubite. 2023. A New Species of Begonia section Baryandra from Zamboanga Peninsula, Southwestern Philippines. Webbia. 78(2); 87-92. DOI: 10.36253/jopt-15028
