Crotalaria albida B.Heyne ex Roth (1821: 333)

Ninkaew, Sakuntala, Balslev, Henrik, Pornpongrungrueng, Pimwadee & Chantaranothai, Pranom, 2017, Crotalaria L. (Fabaceae: Faboideae) in continental Southeast Asia, Phytotaxa 320 (1), pp. 448-450 : 448-450

3. Crotalaria albida B.Heyne ex Roth (1821: 333) . Type :— INDIA. 1814, Anon. s.n. (isotype L0649895 !). (Figure

30C).

= Crotalaria deflexa Bentham (1852: 206) . Type:— INDONESIA. Java, Jungiuin 274 (holotype L0018842 !).

= Crotalaria hossei Craib (1911: 34) . Type (lectotype designated here):— THAILAND. Chaing Mai: Doi Suthep, 8 October 1904, Hosseus 59 (lectotype K000591108 !, isolectotypes BM000901007!, BM000901008!, BM000901009!, E00814811 !).

= Crotalaria pseudo -henrici Hochreutiner (1925: 390). Type:— INDONESIA. Java, 21 July 1904, Hochreutiner 1634 (isotype L0018843 !) .

Herb, erect, 25–60 cm high; young branches terete, white pubescent. Leaves simple. Stipules minute, caducous. Petioles 0.8–2 mm long, white pubescent. Lamina obovate to narrowly oblong, 0.5–4.5 × 0.2–1.2 cm, base cuneate, apex mucronate or rounded, margin entire, glabrous upper, white puberulous lower; lateral veins 4–6 pairs. Inflorescences terminal, open racemes, 3–10 cm long; peduncle 0.9–1.4 cm long, white pubescent. Bracts narrowly linear, 1.8–2 mm long, persistent. Pedicels (2–) 4–6 mm long, brown pubescent. Bracteoles inserted on the calyx tube, narrowly linear, 2–3 mm long, persistent. Calyx 5–8 mm long, campanulate, bilabiate; tube 2–3 mm long; lobes triangular, 3–5 mm long, glabrous inside, brown pubescent outside. Corolla yellow. Standard: claw 0.4–0.5 mm long, glabrous; blade obovate, 7–9 × 6–7 mm, base truncate, apex rounded with white pubescence, margin glabrous. Wings: claw 1–1.5 mm long, glabrous; blade oblong, 5.8–6.2 × 2–2.5 mm, base oblique, apex obtuse, margin glabrous. Keel: claw 0.5–1 mm long, glabrous, margin white pubescent; blade lanceolate, 5.2–6 × 3–3.5 mm, beak spirally twisted, base cuneate, apex attenuate, margin white tomentose. Stamens: filaments fused for proximal 1.5–2.2 mm, free for distal 1.8–2.5 mm; anthers either narrowly linear, 0.8–1 mm long or oblong, 0.2–0.3 mm long. Ovary with 0.2–0.3 mm long stipe, oblanceolate, 2–2.3 mm long, glabrous; style 4.3–4.5 mm long, dispersed white puberulous. Pods with 1–1.2 mm long stipe, obovate, 1–1.2 × 0.3–0.4 cm, brown-black, glabrous. Seeds harp-shaped, 1–1.5 × 1.3–2 mm, brown.

Representative specimens: — CAMBODIA. Kampong Speu: Strok, Kirirom National Park , 17 November 2007, Du & Rattana CB-VN21 ( K) . Kampong Chhnang: Toek pihors, 11 April 2010, Chantrea 12 ( CMUB) . LAOS. Khammouan: Houay Mai Kuang , 29 October 2005, Newman et al. LAO630 ( BKF, FOF, L) . Xieng Khouong : 27 May 1919, Hieville 37119 ( P) . MYANMAR. Chin State: Natma Taung National Park , 2 December 2012, Fujikawa et al. 90436 ( QBG) . Mawlamyine ( Moulmein ): 1827, Wallich 5418 ( K) . Tong Dong: 1826, Wallich 5403 ( K) . THAILAND. Buriram: 26 November 1976, Phengklai et al. 3452 ( BKF, PSU) . Chaiyaphum: Phu Khieo , 4 August 1972, Larsen et al. 31403 ( AAU, BKF) . Chiang Mai: Doi Chiang Dao , 14 December 1978, LjØrnland 498 ( AAU) . Chiang Rai: 28 November 2007, Maxwell 07-706 ( QBG) . Chon Buri: Si Racha , 19 October 1975, Maxwell 75-1029 ( AAU, BK) . Kalasin: Sahatsakhan, Phu Sing , 20 October 1975, Sutheesorn & Sangkhachand 3473 ( BK) . Kanchanaburi: Srinakarin National Park , 18 June 2001, Bult 442 ( BKF) . Khon Kaen: Phu Wiang National Park , 11 November 2014, Ninkaew 283 ( KKU) . Lampang: Chae Son National Park , 19 December 1996, Maxwell 96-1678 ( BKF) . Lamphun: Mae Tah , 15 November 1993, Maxwell 93-1381 ( BKF) . Loei: Phu Kradueng , 10 November 1970, Charoenphol et al. 4883 ( AAU, BKF) . Mae Hong Son: Lum Nam Pai Wildlife Sanctuary , 15 December 2007, Tanaka et al. HN8401 ( QBG) . Nakhon Ratchasima: Pak Thong Chai , 11 November 1969, Beusekom & Charoenphol 1979 ( AAU, BKF, K) . Nan: Chiang Klang , 18 November 1993, Larsen et al. 44519 ( AAU, BKF) . Phayao: Phu Sang National Park, Doi Pha Dam , 14 December 2012, La-ongsri et al. 2600 ( QBG) . Phetchabun: Nam Nao National Park , 5 January 2014, Ninkaew 257 ( KKU) . Sa Kaeo: Aranyaprathet , 20 October 1828, Put 2069 ( BK) . Sakon Nakhon: Phu Phan National Park, Tham Seri Thai , 12 November 2013, Ninkaew 294 ( KKU) . Sukhothai: 6 November 1971, Maxwell 71-738 ( AAU) . Tak: Phob Phra , 21 November 2005, Pooma et al. 5755 ( AAU, BKF) . Uthai Thani: Huai Kha Khaeng Wildlife Sanctuary , 12 November 1979, Shimizu et al. T-22434 ( BKF) . VIETNAM. Kon Tum: Dak Glei , 12 November 1995, Averyanov et al. VH1567 ( P) . Lam Dong: Lac Duong , 10 April 1997, Averyanov & Binh VH 3829 ( QBG) . Ninh Thuan: Phan Rang– Thap Cham, Cana , 6 November 1923, Poilane 8465 ( K, L, P) .

Distribution: —Asia ( Sri Lanka, Tibet, India, Myanmar, China, Taiwan, Thailand, Laos, Cambodia, Vietnam). ( Figure 3 ).

Ecology: —Sunny places in deciduous dipterocarp forests, elevation 6–1960 m.

Notes: — Crotalaria albida is distinct from other species of the genus in SE Asia by the terminal inflorescences, the longer pedicels, the apex of the standard which is pubescent and the stipitate ovary and pods. Craib (1911) described C. hossei based on two collections viz. Hosseus 59 ( BM!, K!) and Kerr 839 ( BM!, K!). Hosseus 59 ( K!) is well preserved, therefore, designated here as the lectotype .

Figures

FIGURE 3. Distribution map of Crotalaria albida in continental Southeast Asia.