Flemingia paniculata Wall. ex Benth. (1852: 245)

Do, Truong Van & Gao, Xin-Fen, 2020, Taxonomic revision of the genus Flemingia (Leguminosae) from Indo-Chinese floristic region, Phytotaxa 429 (1), pp. 1-38 : 18

1. Flemingia paniculata Wall. ex Benth. (1852: 245) . Type :— MYANMAR. Ataran river, Wall.Cat. 5759 (Holotype, K-001122037!;

isotype, BM-000958663!)

Flemingia sarmentosa Craib (1927: 69) . Type : THAILAND. Maharat, alt. 360 m, 15 February, 1912, A.F.G.Kerr 2380 (Holotype, ABD!;

isotype, BM-000958670!).

Shrubs, erect, ca. 1.5–3 m tall. Branchlets slightly zigzag, pubescent and villous. Petiole 1.2–2.2 cm long, sparsely villous. Stipules lanceolate, 5–6 mm long, hairy, caducous. Leaves unifoliolate; leaf blade ovate-cordate or broadly elliptic-cordate, 7–13 cm long, 5–7 cm wide, papery, adaxially glabrous, abaxially glabrous except on veins, with scattered black glands, basal veins 5, lateral veins pinnate, 6–8 pairs, margin slightly sinuate, apex mucronate. Inflorescence in panicles, axillary or terminal, or fascicled racemes, inflorescence axes 3–8(–10) cm long, slender, pubescent and villous; bracts ovate to ovate-lanceolate, 3–4 mm long, pilose, scarious, equaling the calyx, caducous. Flowers sparsely flowered; pedicel 6–8 mm long. Calyx ca. 5 mm, densely pubescent, with yellowish glands; lobes lanceolate, longer than tube, apex long acuminate, lower one longest. Corolla purplish-pink, longer than calyx; standard circular, clawed, auriculate; wings oblong, clawed, one with tooth-like auricle; keel falcate, wider than wings, clawed. Pods elliptic, 10–14 mm long, 5–6 mm diam., pubescent, with yellowish glands. Seeds 2, suborbicular, ca. 2 mm diam., black, smooth.

Iconography citation: — Wei (1995: 317): plate 75, figure 2.

Ecology and phenology: — Flemingia paniculata is found in bamboo forest or limestone forest or grassy slope at 700–1400 m. Flowering from January to March, and fruiting from February to April.

Distribution: — China, Thailand, Myanmar, and Laos.

Notes: — F. paniculata is most similar to F. strobilifera by sharing 1-foliolate and ovate-cordate or broadly elliptic-cordate leaf blade, but clearly distinguished from the latter by inflorescence differences (panicles vs. a thyrse with many cymes enclosed by concave bracts).

Representative specimens: — CHINA. Yunnan: Jinghong, Jingna, J.W.Li 3096 (KUN); Cha Li, M.G.Li 3178 (PE, KUN); Xishuangbana, Sino-Soviet 5681 (PE, KUN); J.Huang 003221 (HITBC); S.S.Zhou 3687, 3763 (HITBC); H.Wang 3909 (HITBC); Puer, Longtan, Xiaolu, H.Wang 3944 (HITBC); Xiaoheijiang, Ninglang, Bailong, Shipo, G.D.Tao 41461, 41857 (HITBC). LAOS. Louang Prabang: Nam Ninh, M.E.Poilane 20362 (P).