Eurycaulis boumaniae (J.J.Sm.) M.A.Clem., 2003

Genera	Eurycaulis M.A.Clem. & D.L.Jones	Orchadian 13: 490 (2002).
Basionym	Dendrobium boumaniae J.J.Sm.	Bull. Jard. Bot. Buitenzorg, III, 8: 55 (1926). .
Species	Eurycaulis boumaniae (J.J.Sm.) M.A.Clem	Telopea 10: 285 (2003).
Section	--
Flowering	09 November 2012	Blangkejeren, Aceh, northen Sumatra
Origin	Gayo Lues regency, Aceh, Northen Sumatra	Epiphyte on ? Date coleccted ? Octobeber 2012
Smell	Odorless
Addition page		not available
Other specimens		not available
Contributor	Mr. Cipta Kurniawan	Blangkejeren, Aceh, northen Sumatra
Key determination	LINK not available	Not Available
Annotation	Very close to Eurycaulis groeneveldtii (J.J.Sm.) M.A.Clem., 2003	Endemic

Homotypic Synonyms: 
Dendrobium boumaniae J.J.Sm., Bull. Jard. Bot. Buitenzorg, III, 8: 55 (1926). 
Eurycaulis boumaniae (J.J.Sm.) M.A.Clem., Telopea 10: 285 (2003).

Eurycaulis boumaniae (J.J.Sm.) M.A.Clem.

Labellum et dorsum visum

Eurycaulis boumaniae (J.J.Sm.) M.A.Clem.

Eurycaulis boumaniae (J.J.Sm.) M.A.Clem.

Eurycaulis boumaniae (J.J.Sm.) M.A.Clem.

Eurycaulis boumaniae (J.J.Sm.) M.A.Clem.

Eurycaulis boumaniae (J.J.Sm.) M.A.Clem.

Eurycaulis boumaniae (J.J.Sm.) M.A.Clem.

Species	Eurycaulis boumaniae (J.J.Sm.) M.A.Clem.	Eurycaulis groeneveldtii (J.J.Sm.) M.A.Clem.
Reference	Orchids of Sumatra,  614 (2001).	1. Orchids of Sumatra,  616 (2001). 2. Bull. Jard. Bot. Buitenzorg, III, 8: 55 (1926).
Stem	To c. 25 cm long by 8 mm thick	Short, flattened, at first angle, later ribbed, 10 -16 cm long, up to 1 cm broad in the centre. Dark putple, the internode 1.5 - 2.2 cm long (*1). c. 0.8 - 1 cm broad in the centre (*2).
Leaves	Lanceolate, approx.  6.75 x 2 cm.	Lanceolate, their apices very oblique, approx. 5.5 x 1.8 cm. Dark olive green.(*1). c. 4.5 - 6.5 cm longa, c. 1.6 - 2 cm lata, margin recurvulo (*2)
Inflorescense	On leafless stems, short, one-flowers, the peduncle thin, pale green spotted violet, 2 mm long	e nodis caulium defoliatorum in flexibus, c terni fasciculati,brevissimi, 1 flori, pedunculo abbreviato
Flowers	Ochre but slightly suffused with purple, medium size c. 2.4 cm broad by 1.85 cm long. Petal obliquely, oblong, obtuse, narrowed basalli.	Medium size  c. 2.3 cm broad by 2.2 cm long, sepals and petals light brownish green, reflexed. (*1). Petala superne undulata et erosula (*2).
Labellum	Without sidel lobe, white with some faint purple marking near the apex, the lamina ovate in outline, shallowly bilobed apically, the lobes rounded and with erose margins.	Without side-lobe , the lamina more or less guadrangular, shallowly bilobed at the apex, with rounded lobules, their margin erose, some times there is a violet dot on the.(*1). .
Draw lines	Tabula 80 : IV  Icones  Orchidacearum Malayensium 1934	Tabula 80 : I  Icones  Orchidacearum Malayensium 1934

	Distribution	Lifeform
	Sumatera 42 SUM	Pseudobulb epiphyte Growing on trees or rocks, without extracting nutrition from the host.
Basionym	Wai Tenung, Bengkulu. c. 1000 m above sea level
Specimen	Blangkejeren, Aceh, Northen Sumatra
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Posted  21112012

Note :

Bila bagian bunga di uraikan, maka bentuk labellum dari anggrek ini sangat berbeda sekali dengan bentuk dari labellum Eurycaulis groenelveldtii. Tanpa bantuan draw line sangat sulit membedakan species ini.