Two new species of Begonia (sect. Platycentrum, Begoniaceae) from the Central Highlands of Vietnam: B. villosula and B. lophura Author Hoang, Thanh Son 0000-0003-0351-929X Institute of Applied Technology, Thu Dau Mot University, Binh Duong Province 820000, Vietnam hoangthanhson@tdmu.edu.vn Author Lin, Che-Wei 0000-0002-8564-5793 Herbarium of Taiwan Forestry Research Institute, Taiwan Forestry Research Institute, No. 53, Nan-Hai Road, Taipei 100, Taiwan varalba@gmail.com text Phytotaxa 2021 2021-07-09 510 3 263 274 http://dx.doi.org/10.11646/phytotaxa.510.3.6 journal article 305306 10.11646/phytotaxa.510.3.6 64a298b6-5ba6-4f8a-b372-524b516ba330 1179-3163 5426458
TABLE 2. Comparison of Begonia lophura T.S.Hoang & C.W.Lin, B. menglianensis Y.Y.Qian and B. pavonina Ridley.
B. lophura (Figures 5, 6)B. menglianensisB. pavonina
Rhizome vestiturehispidvillousglabrous
Stipule
size (mm)5–8 × 7–108–10 × 6–912–15 × 4–5
adaxial vestiturehirsutevillous on midribglabrous
Leaf
shapewidely ovatewidely ovate to ovateovate
maculationuniformly green, sometimes embellish with darker blot between veinslighter grey stripes between veinsuniformly green
blue iridescencepresentabsentpresent
vestiture
abaxialhirsutevillous on veinsglabrous
Inflorescence
peduncle vestiturehirsutevillousglabrous
bract marginsparsely denticulate and hirsuteciliateentire
Staminate flower
abaxial surface of outer tepalhirsutevillousglabrous
Pistillate flower
abaxial surface of outer tepalhirsutevillousglabrous
ovary vestiturehirsutevillousglabrous
Capsule
vestiturescabrousglabrescentglabrous
abaxial wingstrongly swollenthinthin