TY -JOUR
AU -Che-Wei Lin and Ching-I Peng
TI -Begonia natunaensis (sect. Reichenheimia, Begoniaceae), a new species from Natuna Island, Indonesia
PY -2014
DA -2014-12-16
JO -Taiwania
VL -59
IS -4
SP -368
EP -373
UR -https://taiwania.ntu.edu.tw/abstract/1385
AB -Begonia natunaensis, a new species of sect. Reichenheimia from Natuna Island, Indonesia, is here described and illustrated. Begonia natunaensis resembles B. goegoensis N.E. Brown in having suborbicular, peltate leaves with an abruptly tapering tip, differing in the number of tepals in staminate flowers (2 vs. 4) and in pistillate flower (2 vs. 3) and the petiole (terete vs. 4-angular). The new species is also similar to another peltate-leaved Begonia, B. sudjanae Jans., but is distinguishable by being glabrous (vs. hispid throughout), the staminate tepals 2 [vs. (2–)4], and pistillate tepals 2 [vs. (2–)3]. Geographically, B. natunaensis is endemic to Natuna Island in the South China Sea, whereas B. goegoensis and B. sudjanae are distributed in western Sumatra, ca. 1,000 km away from Natuna.

DO -10.6165/tai.2014.59.4.368