| Original Botanical Description or Link to | Begonia lui S.M.Ku, C.I Peng & Yan Liu, sp. nov.
(Sect. Coelocentrum) 陆氏秋海棠 (Figs. 10 and 11).
Begonia bonii var. remotisetulosa Y.M.Shui &
W.H.Chen, Acta Bot. Yunnan. 27(4): 360. 2005, pro. part.
[S.P. Ko 55623 (IBSC)].
Begonia koi S.M.Ku et al., sp. nov. ined. in Ku, Systematics of Begonia sect. Coelocentrum (Begoniaceae) of
China. 2006.
Type: CHINA, Guangxi, Baise City, Jingxi County,
Wuping Town, Yixing Village, Pai Lin Tun, Baiyan Cave,
elev. 730 m, 23°09’28”N, 106°35’4”E, on limestone hill,
plant collected on 22 May 2007, type specimens (in fowers) pressed from plants cultivated in the experimental greenhouse, Academia Sinica, Taiwan, Ching-I Peng
21112-A with Yan Liu, Hai-Shan Gao, Kuo-Fang Chung,
Ming-Chao Yu, and Lu-Shi Nian (holotype: IBK; isotype:
HAST-144968).
Monoecious rhizomatous herb. Rhizomes 5–8 mm
in diameter, internodes 4–20 mm long, densely villous.
Stipules generally persistent, ovate-triangular, 8 mm
wide, 5 mm tall, margin ciliate. Leaves alternate; petiole 4.5–13 cm long, 2–3 mm cross, villous; leaf blade
asymmetric, broadly ovate or suborbicular, 7.5–12 cm
long, 6–9 cm wide, thickly chartaceous, base strongly oblique-cordate, adaxially slightly rugose, deep green,
with white maculation in intercostal areas, moderately
densely setulose, abaxially tomentose along veins and
veinlets, margin crenulate and irregularly denticulate,
ciliate, apex obtuse. Inforescences axillary, dichasial
cymes, arising directly from rhizome; peduncle 11–16 cm
long, sparsely pilose; bracts ovate, 5–10 mm long, ca.
4 mm wide, fmbriate. Staminate fower: pedicel ca.
18 mm long; tepals 4, outer 2 suborbicular, ca. 13 mm
in diameter, pinkish white, glabrous or nearly so, inner 2
oblanceolate, ca. 10 mm long, 4 mm wide, white; androecium zygomorphic, stamens ca. 20, flaments nearly free.
Pistillate fower: pedicel 8–12 mm long; tepals 3, outer
2 suborbicular, ca. 10–17 mm in diameter. glabrous
or nearly so, pinkish white, inner 1 oblong-obovate,
ca. 12 mm long, ca. 5 mm wide, white; ovary ellipsoid,
7–10 mm long, 3–4 mm thick (wings excluded), 1-locular, placentae parietal, yellowish green to pinkish, nearly
glabrous, 3-winged; wings unequal, yellowish green to
pinkish, abaxial wing crescent-shaped, ca. 4 mm high, lateral wings 2, narrowly crescent-shaped, ca. 2 mm high;
styles 3, fused at base, yellow, ca. 4 mm long. Capsules
nodding, ca. 10 mm long, nearly glabrous, unequally
3-winged, abaxial wing crescent-shaped, ca. 4 mm high.
Distribution and ecology
Known only from the type locality in Guangxi, China. On
limestone hill.
Phenology
Flowering from March to May; fruiting in May.
Etymology
Tis species is named in honor of Mr. Shi-Nian Lu (陆仕
念), an engineer of Jingxi Forestry Bureau of Guangxi and
an expert of Jingxi’s fora who has helped tremendously
the exploration of Guangxi’s limestone fora. |
