Description
المقدمة من Phytokeys (archived)
Erect subshrubs 0.5–2 m tall. Leaves simple or very rarely (Nuku Hiva) compound and trifoliolate, 3–15.5 cm long including petiole, blades lanceolate to elliptic-lanceolate, 2–11 × 1.2–5 cm, glabrous or lower surface occasionally pubescent, especially on young leaves, margins variably serrate to serrulate or subentire, apex acuminate or occasionally acute or caudate (Nuku Hiva). Heads 10–80(–100+), glabrous to sparsely pubescent at base, in diffuse cymes terminating main stem and lateral branches, main inflorescence axis up to 6.5 cm, heads 2–5 mm in diameter excluding rays, peduncles 0.1–5 cm long, glabrous or sparsely pubescent; outer involucral bracts 1–4.5 mm long, well differentiated from inner bracts, glabrous to sparsely ciliate; ray florets 3–12 per head, sterile, rays yellow, 3–12 × 1–4 mm, apex rounded, entire or bi- or tri-lobed; disk florets ca. 12–25, perfect. Achenes gray to black, straight or slightly curved, 3–8 × 0.5–1 mm, margin setose; pappus of 0–2 short awns. n = 36 (Gillett 1972).
- ترخيص
- cc-by-3.0
- حقوق النشر
- Warren L. Wagner, John R. Clark, David H. Lorence
- الاقتباس الببليوغرافي
- Wagner W, Clark J, Lorence D (2014) Revision of endemic Marquesas Islands Bidens (Asteraceae, Coreopsideae) PhytoKeys 38: 37–67
- مؤلف
- Warren L. Wagner
- مؤلف
- John R. Clark
- مؤلف
- David H. Lorence
Distribution
المقدمة من Phytokeys (archived)
Marquesas Islands, occurring on Nuku Hiva, Ua Huka, Hiva Oa, Mohotani, and Tahuata, 10–800(–1080) m. The occurrence on Mohotani is based on observation by Jean-François Butaud (pers. comm., 2014), but should be verified by collections.
- ترخيص
- cc-by-3.0
- حقوق النشر
- Warren L. Wagner, John R. Clark, David H. Lorence
- الاقتباس الببليوغرافي
- Wagner W, Clark J, Lorence D (2014) Revision of endemic Marquesas Islands Bidens (Asteraceae, Coreopsideae) PhytoKeys 38: 37–67
- مؤلف
- Warren L. Wagner
- مؤلف
- John R. Clark
- مؤلف
- David H. Lorence
Bidens polycephala: Brief Summary
(
الفيتنامية
)
المقدمة من wikipedia VI
Bidens polycephala là một loài thực vật có hoa trong họ Cúc. Loài này được Sch.Bip. mô tả khoa học đầu tiên năm 1856.
- ترخيص
- cc-by-sa-3.0
- حقوق النشر
- Wikipedia tác giả và biên tập viên