Bulbophyllum guttulatoides Aver.

Bulbophyllum guttulatoides Aver., Rheedea 15(2): 87 (figs. 3, 4e-g) (2005).

Bulbophyllum guttulatoides Aver., Photos by Nghiem Xuan Son

its native range is Vietnam.

Bulbophyllum guttulatoides Aver.

2005, Rheedea 15, 2: 5, Fig. 3, 4 e-g.

Synonyms.

Bulbophyllum guttulatum auct. non (Hook, f.) X. P. Balakrishan, 1970: Aver. & Averyanova, 2003, Updated Checklist. Orch. Vietnam: 15.

Studied collections. 

19 May 2002, Averyanov et al., HAL 1642; 20 May 2002, Averyanov et al., HAL 1651; 22 May 2002,

Averyanov, P.K.Loc. CP 127.

Description. 

Epiphyte and lithophyte with long creeping rhizome 1.5—2 mm thick and narrowly ovoid to ovoid, erect l-leaved pseudobulbs 0.8—1.2 cm tall. Leaves coriaceous, with short petiole and lanceolate to narrowly-elliptic blade 6—10 by 0.6—1.2 cm. Inflorescence appears from the base of pseudobulb, 3—5 cm long, much shorter than leaves, l-flowered. Flowers not widely opening, 1.2—1.6 cm long. Sepals yellow, speckled with purple; dorsal sepal broadly ovate, 9—10 by 5—7 mm; lateral sepals 12—14 bv 5—7 mm, ovate, attenuate, connate with lower and along upper margin near the apex, forming a short broad mentum. Petals 5—6 by 2.5—3 mm>purple-brown, oblique ovate to broadly falcate, obtuse, with shot apical mucro. Lip narrowly-ovate, simple, fleshy, strongly decurved, 2—3 by 1—1.5 mm- Column 2—2.5 mm hall with large stelidia dilated at the apex and large, broad wings in front of column, column foot long, curved, 3.5—4 mm long. Fig. 6: Plate g (17.18).

Flowering time. 

April-June.

Geographic range. 

Endemic of Vietnam.

Notes. 

This species differs from the closely related Bulbophyllum guttulatum (Hook, f.) N. P. Balakrishan (distributed in Nepal, Bhutan, NE. India and China) and B. umbellatum Lindl. (reported from Bhutan, NE. India, Myanmar, Thailand and Vietnam) by its short l-flowered inflorescence, much shorter than leaves, its large stelidia and the mucronate tips of sepals. It is probably a rare local endemic of lowland limestone areas in the center of northern Vietnam.

References:

Leonid V. Averyanov, Nguyen Tien Hiep, Phan Ke Loc, The orchids Of Cuc Phuong National Park Illustrated guide, ISBN: 9781626751514