Urostachya densa (Ridl.) Rauschert, 1983

Genera	Urostachya (Lindl.) Brieger	Schlechter Orchideen 1(11-12): 716 (1981).
Basionym	Eria densa Ridl.	J. Linn. Soc., Bot. 31: 281 (1896).
Species	Urostachya densa (Ridl.) Rauschert	Feddes Repert. 94: 471 (1983).
Date collected	13 October 2012	Epiphyte at Pohon Langsat Hutan.(Aglaia argentea Blume.).
Flowering	11 November 2012	Rokan Hulu regency, Riau, Sumatra
Origin	Bukit Tinggi, west Sumatra
Smell	Odorless
Addition page		Unavailable.
Other specimens Origin		Unavailable.
Contributor	Mrs. Shiva Ramli	Rokan Hulu regency, Riau, Sumatra
Key determination	Key to the species genus Urostachya (Lindl.) Brieger. LINK	Unavailable
Annotation	Flores copiosi parvi, ilis E. floribunda similes albi roseo tincti.

Posted 12112012

Homotypic Synonyms:
Eria densa Ridl., J. Linn. Soc., Bot. 31: 281 (1896).
Urostachya densa (Ridl.) Rauschert, Feddes Repert. 94: 471 (1983).
Pinalia densa (Ridl.) W.Suarez & Cootes, Orchideen J. 16: 71 (2009).

Anthera plana atro-rubens margine flavo.

Urostachya densa (Ridl.) Rauschert

Labellum lobi laterales falcate acuti.

Labellum lobus medius spathulatus.

Flos albi roseo tincti.

Sepalum posticum ovatum, lateralia ovata triangularia ferme obtusa

Urostachya densa (Ridl.) Rauschert

Urostachya densa (Ridl.) Rauschert

Urostachya densa (Ridl.) Rauschert

Pseudobulb close together, thick and cylindrical, each bearing about 4 leaves.

Data	Specimen	Description
Caulis	c. 20 cm	c. 16 cm
Folia	c. 25 cm longa, c. 2.7 cm lata., folia 4-5	c. 22 cm longa, c. 4 cm lata, folia c. 4
Draw lines	Tabula 51 : III   Icones  Orchidacearum Malayensium 1934	Tabula 51 : III   Icones  Orchidacearum Malayensium 1934

Columna crassa alba, pede longo.

 flos c. 7 mm lata

Flos c. 9 mm longa

Folia c. 27 mm lata.

Folia c. 20 cm longa

Plant, stem c. 20 cm long.

Basionym
J. Linn. Soc., Bot. 31: 281 (1896). 

Distribution: 
S. Indo-China to W. Malesia
41 CBD THA
42 BOR MLY SUM


Lifeform:  
Pseudobulb epiphyte