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Tên Khoa học: Bulbophyllum nigripetalum Rolfe
Tên tiếng Anh:
Tên tiếng Việt:
Tên khác:

MÔ TẢ CHUNG

Creeping epiphytic herb with rhizome (3)4-8(12) cm long, (1.5)2-2.3(3) mm in diam., pseudobulbs usually dense touching each other. Pseudobulbs ovoid or subglobular, shortly attenuate at apex, (0.5)0.6-1.2(1.4) cm tall and wide. Leaves shortly petiolate; petiole terete, (4)5-12(15) mm long, grooved adaxially; leaf blade oblong elliptic, (5)6-14(16) cm long, (0.6)8-12(16) mm wide, obtuse. Inflorescence glabrous, erect, lax, many-flowered secund raceme, (16)20 - 50(60) cm long, glabrous; peduncle (10)15-25(30) cm long, with 4-6 sterile, narrowly ovate bracts to 1 cm long; rachis (5)6-18(25) cm long. Floral bracts narrowly triangular, (1.2)1.5-2(2.5)mm long, 0.6-0.8 mm wide, acute. Flowers not widely opening, opening few in one tome. Pedicel and ovary glabrous, (3)3.5-4(4.5) mm long. Sepals (3.2)3.4-3.6(4) mm long, obtuse, ciliate along margin and pubescent adaxially, median sepal narrowly ovate, (0.9)1-1.2(1.4) mm wide, lateral sepals rectangular broadly ovate, (2)2.2-2.4(2.5) mm wide. Petals (1.4)1.5-1.6(1.8) mm long, 0.5-0.6 mm wide, spatulate, more or less gradually broadening from narrow base to obovate apical part, obtuse, densely hairy at apex. Lip recurved, obovoid, (2.5)2.6-2.8(3.2) long, (0.9)1-1.2(1.3) mm wide, rounded at apex, finely ciliate or velutinous, grooved in basal part. Column (0.8)1-1.2(1.3) mm long and wide, stigma protruding, with tooth slightly below; stelidia triangular, (0.3)0.4(0.5) mm long, acute; anther helmet shaped, 0.5-0.6 mm in diam., densely papillose.

Habitat, phenology and conservation status.

Short creeping or clustering branch epiphyte. Primary broad-leaved evergreen submontane forests. 1000–1800 m. Fl. November – December.

Very rare.

Tentatively estimated

IUCN Red List status - DD.

Distribution.

Laos: Houaphan (Hem district, Na Puok village, Pu Tham Nhon Mountain) and Louang Namtha (sine loc.) provinces,

Vietnam: Lam Dong province (Bidoup Mountains).

S. China (Yunnan), N. Thailand. 

ẢNH

Bulbophyllum nigripetalum and Bulbophyllum parviflorum on Taiwania 62(1).jpg at www.BotanyVN.com

Ảnh 1. Bulbophyllum nigripetalum and Bulbophyllum parviflorum on Taiwania 62(1).jpg

 

Bulbophyllum nigripetalum on Taiwania 62(1).jpg at www.BotanyVN.com

Ảnh 2. Bulbophyllum nigripetalum on Taiwania 62(1).jpg

 

PHÂN LOẠI KHOA HỌC
Giới: Thực vật
Ngành: Magnoliophyta
Lớp: Liliopsida
Bộ: Orchidales
Họ: Orchidaceae
Chi: Bulbophyllum

CHỈ SỐ

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