Crotalaria bracteata Roxburgh ex Candolle 1825
Creators: name: Ninkaew, Sakuntala
name: Balslev, Henrik
name: Pornpongrungrueng, Pimwadee
name: Chantaranothai, Pranom
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Fabales
Fabaceae
Crotalaria
Crotalaria bracteata

description: 6. Crotalaria bracteata Roxburgh ex Candolle (1825: 130). Type:— INDIA. 18 September 1815, Wallich 985 (holotype G00457902! seen on image). (Figure 30E).   
 Herb, erect, 0.5–1 m high; young branches terete, brown tomentose. Leaves digitately 3-foliolate. Stipules narrowly linear, ca. 1 mm long, brown pubescent, caducous. Petioles 2.5–5.7 cm long, brown pubescent. Petiolules 1–3 mm long. Leaflets elliptic or obovate, 5–10 × 3–4.5 cm, base cuneate, apex acute or emarginate, margin entire, glabrous upper, white puberulous lower; lateral veins 6–10 pairs. Inflorescences leaf-opposed, open racemes, 5.5–9.5 cm long; peduncle 0.7–2 cm long, brown pubescent. Bracts narrowly linear, 1.3–2 mm long, persistent. Pedicels 2–5 mm long, brown pubescent. Bracteoles inserted on the calyx tube, ovate, 3–3.5 × 1–1.5 mm, persistent. Calyx 3–5 mm long, truncate; tube 1.5–2 mm long; lobes subequal, triangular, 1.5–3 mm long, glabrous inside, white puberulous outside. Corolla yellow (sometimes reddish-yellow). Standard: claw 1.8–2 mm long, glabrous, apex with appendages, margin white pubescent; blade broadly ovate, 8–10 × 7–8 mm, base rounded, apex acute, margin glabrous. Wings: claw 1–2 mm long, glabrous; blade oblong, 7–8 × 3–3.5 mm, base oblique, apex acute, margin glabrous. Keel: claw 1.8–2 mm long, glabrous except margin white pubescent; blade ovate, 11–12 × 4–5 mm, beak not twisted, base cuneate, apex attenuate, margin white puberulous. Stamens: filaments fused for proximal 5–6 mm, free for distal 5–6 mm; anthers either narrowly linear, 1–1.5 mm long or oblong, 0.2–0.3 mm long. Ovary with 0.8–1 mm long stipe, oblong, 2–3 mm long, white tomentose; style 11–12 mm long, adaxially white pubescent at the base and along a single line on the distal edge, abaxially glabrous. Pods with 1.5–2 mm long stipe, elliptic, 1.2–2 × 0.6–0.8 cm, brown, white tomentose. Seeds reniform, 3–3.2 × 2.8–3 mm, yellow-brown.   
 Representative specimens: — CAMBODIA. Ratanakiri: Banlung, 19 November 1997, Hul & Yok 350 (P). Stung Treng: December 1975, Harmand 74 (BM, P). LAOS. Luang Prabang: Ban Bo, January 1954, Vidal 2640 (P). Savannakhet: 28 December 1924, Poilane 11369 (BKF, L, P). Xieng Khouang: 23 November 1920, Poilane 2398 (AAU, BKF, HN, K, L, P). MYANMAR. Griffith 1473 (K). THAILAND: Chiang Mai: Doi Pha Hom Pok National Park, 22 November 2014, Ninkaew 310 (KKU). Chiang Rai: 26 January 1963, Sutheesorn 1538 (BK). Chaiyaphum: Phu Khieo, 9 November 1984, Murata et al. T-50416 (BKF). Kamphaeng Phet: 9 November 1920, Kerr 4544 (AAU, BK). Kanchanaburi: Sai Yok, 5 November 1979, Shimizu et al. T-21735 (BKF). Khon Kaen: Phu Pha Man National Park, Pha Nok Khao, 24 December 2011, Norsaengsri & Tathana 8421 (QBG). Lampang: 26 December 1921, Winit 654 (BK). Lamphun: Doi Khun Tan National Park, 1 November 1994, Maxwell 94-1174 (BKF). Loei: Phu Kradueng National Park, 14 October 1953, Bunpheng 678 (BKF). Mae Hong Son: Mueang, Ban Huai Sai Khao, 14 March 2001, Pongamornkul 2962 (QBG). Nan: Bo Kluea, 21 February 2014, Ninkaew 253 (KKU). Phayao: Doi Luang National Park, 19 November 1997, Petrmitr 147 (CMUB). Phrae: Mae Yom National Park, 7 November 1991, Maxwell 91- 981 (CMUB). Phetchabun: Nam Nao National Park, 5 January 2014, Ninkaew 269 (KKU). Phetchaburi: Nong Ya Plong Khao Krating, 3 October 2002, Niyomdham & Puudjaa 6944 (BKF). Phitsanulok: Nakhon Thai, 26 December 1966, Prayad 633 (BK). Ratchaburi: Chaleam Phrakiat Thai Prachan National Park, 24 October 2014, Ninkaew 334 (KKU). Sukhothai: 5 November 1971, Maxwell 71-689 (AAU). Tak: Umphang, 7 November 1998, Puudjaa 531 (BKF). Uthai Thani: Lan Sak, 12 November 1979, Shimizu et al. T-22248 (BKF). Uttaradit: Ban Nam Pad, 29 October 2010, Pongamornkul 2755 (PSU, QBG). VIETNAM. Gia Lai: An Khe, 24 December 1977, Thai D 316 (HNU). Kon Tum: Dak Glei, 12 November 1995, Averyanov et al. VH1577 (P).   
 Distribution: —Asia (China, Thailand, Laos, Cambodia, Vietnam). (Figure 5).   
 Ecology: —Open areas in deciduous dipterocarp, mixed deciduous and dry evergreen forests with bamboo dominance, elevation 65–1300 m.   
 Notes: —The diagnostic characters of C. bracteata are the white tomentose pods, leaf-opposed inflorescences and glabrous or sparely puberulous leaves.
description: Published as part of Ninkaew, Sakuntala, Balslev, Henrik, Pornpongrungrueng, Pimwadee & Chantaranothai, Pranom, 2017, Crotalaria L. (Fabaceae: Faboideae) in continental Southeast Asia, pp. 448-450 in Phytotaxa 320 (1) on pages 448-450, DOI: 10.11646/phytotaxa.320.1.1, http://zenodo.org/record/13699110