Flemingia lineata var. glutinosa Prain (1897: 438)

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 : 23

8a. Flemingia lineata var. glutinosa Prain (1897: 438) . Flemingia glutinosa (Prain) Y.T.Wei & S.K.Lee (1985: 169) . Lectotype (designated by Thuan 1979):— MYANMAR. S. Shan States: Taungyi, King’s collector s.n. (K)

Flemingia lineata var. hirtella Gagnep. (1916: 299) . Lectotype (designated here):— LAOS. Mekong, Kemmarath, C.Thorel 2237 (P-

02920929!) ( Figure 2 ).

Shrub or subshrub, ca. 2 m tall. Branchlets and inflorescence axis closely beset with sticky glandular hairs. Leaflets narrowly lanceolate, thinner, 6–14 cm long, apex acuminate, base acute. Pods obovoid, 1.2–1.8 cm long, densely glutinous hairy.

Iconography citation: — Nguyen (1979: 145): plate 23, figures 2–3; Wei (1995: 320): plate 76, figures 3–9; Pham (1999: 969), figure 3882.

Ecology and phenology: — Flemingia lineata var. glutinosa grows in shaded bamboo/deciduous forest, open margins of meadow land, secondary forest at 200– 800 m. Flowering from January to April, and fruiting from May to June.

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

Notes: — Prain (1897) originally described a new variety, namely Flemingia lineata var. glutinosa which has densely sticky glandular hairs on branches and inflorescence axis, narrowly lanceolate leaf blade with acuminate apex, and obovoid pods, 1.2–1.8 cm long, densely glutinous hairy. This treatment was adopted by Mukerjee (1953), Nguyen (1979), Pham (1999). However, in the treaments of Flemingia for the flora of China, Wei & Lee (1985) separated it as a distinct species, Flemingia glutinosa . Recently, Sa & Gilbert (2010) synonymized it under Flemingia lineata . Based on examination of recent collections, we here agree with Prain’s treatment.

In Floré Genérale de Indo-Chine, Gagnepain (1916) proposed another new variety, namely Flemingia lineata var. hirtella based on three gatherings: C.Thorel 2237, C.J.Spire 1477 and C.J.Spire 825, which were collected from Laos. However, Gagnepain did not specify, which of the three specimens should be regarded as the type. Later, Nguyen (1979) in his treatment of Flemingia in Flore du Cambodge, Laos, and Vietnam, synonymized Flemingia lineata var. hirtella under Flemingia lineata var. glutinosa , but also did not make lectotypification for Flemingia lineata var. hirtella . While looking for the type of Flemingia ferruginea var. hirtella , we traced all these above specimens being deposied at P. of which, the specimen C.Thorel 2237 (P-02920929) matches very well with the protologue, and selected here as the lectotype for Flemingia lineata var. hirtella ( Figure 2 ). The specimens of C.J.Spire 1477 (P-00709072) and C.J.Spire 829 (P-00709070) remain syntypes.

Representative specimens: — CHINA. Yunnan: Xishuangbana , 21 March 1964, Y.H.Li 5226 (HITBC) ; 24 March 1955, G.Z.Feng 20022 (KUN, PE); 23 January 1962, Y.H.Li 3927 (HITBC); 28 March 1962, Y.H.Li 4027 (KUN); 20 April 1953, B.Y.Chiu 39 (KUN); Puja Mang Dashan , 14 March 1990, G.D.Tao 41938 (KUN) ; Luoguang Xin Zhai, Tura Jinping , 16 May 1961, S.J.Xuan 95 (HITBC) ; Hexi, Mengding , 1 March 1960, X.H.Li 2195 (HITBC) . LAOS. Louang Prabang: M.E.Poilane 20315 (P) ; Ban Na Kham , Vidal 734 (P) ; Ban Nou, Pottier 57 (P). Xieng Khouang: Chevalier 37234 (P). Sayaboury: Pak Lay, Spire 1477 (P) ; Vientiane: Si Khay, Vidal 1161 (P) . VIETNAM. Dac Lak : Hau Bon, Dournes s.n. (P) ; Schmid 118 (P). THAI LAN. Chiang Mai: Mae Dtang , Nae Sae , 13 January 1991, J.F.Maxwell 91-66 (AAU, BKF) ; 5 January 1993, J.F.Maxwell 89-3 (AAU); A.F.G.Kerr 8390 (AAU). Utaithani: Ban Rai, Huay Ka Kang , Kow Hin Dang , 10 February 1976, J.F.Maxwell 76-95 (AAU) .

Figures

FIGURE 2. Lectotype of F. lineata var. hirtella (Thorel 2237 at P-02920929, designated here).