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lobe erect, blunt, 9 x 4.5 mm, the disc of the labellum with calli arrange parallels, undulating from the base to near the middle of the labellum, the three other calli
near the base of the mid-lobe, almost with the same length, apex rounded,
acuminate, column 8 mm with very short stelidia on each side, column foot 4
mm.
Distribution : Mt Talang West Sumatra, Mt. Kerinci Jambi.
Habitat : on mountain forest up to 2,400 m asl, flowering time: March and
November.
Note : This species is only represented by two sheets herbarium specimen and
some living specimen in Cibodas Botanic Garden. The major differences compare to other genus is the longest pseudobulb and the leaves number on each
pseudobulb from 2-4 observed in living specimen, Wiguna Rahman 353. Flower structure is similar with other species in this genus; having white flower similar to
E. longipes but with up to 11 flowers. Ornament on the labellum also show dissimilarity; the calli at base of labellum similar to E. cymbidioides, the other
three calli between side lobes has the same length. Specimen was collected from Mt. Talang, West Sumatra and Mt. Kerinci Jambi.
Specimen examined
: West Sumatra, Mount Talang 2,230-2,500 m asl, November 14, 1988, H. Nagamasu 3414, flowering specimen BO; Solok residence, along
trail from Desa Air dingin to Mt. Rasam summit at 2,100-2,400 m asl, March 5, 1996, H. Okada, H. Nagamasu, T. Fukuhara, Y. Mori BO.
10. Epigeneium longipes Hook.f. Summerh. Plate 8
Dendrobium longipes Hook.f., Fl. Brit. Ind. 5 1890 713. Sarcopodium longipes Hook.f. Rolfe, Orch. Rev. 18 1910 238.
Katherinea longipes Hook.f. A.D. Hawkes, Lloydia, 19 1956 96. Epigeneium longipes Hook.f. Summerh. comb.nov., Kew Bull. 1957 263.
Comber, Orchid of Sumatra 2001 680.
Rhizome creeping, 3-5 mm in thickness, covered by c. 5 layer brown
cataphylls, ovate, acuminate. Root thicker compare to other species, 1-2.5 mm, fibrous, terete, long, branching with wrinkle surface. Pseudobulb ovoid-narrower
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ovoid, 1-4 cm x 2-10 mm, placed very close from 0.5 to 7.3 cm apart on rhizome.
Leaves two on each pseudobulb, from almost orbicular or elliptic to long elliptic,
rather obtuse, obliquely bilobes, petiole 0.5-1.3 cm. Inflorescence long surpass
the leaf, peduncle 6 – 15.9 cm, much longer than rachis, with 2 sterile bracts,
rachis 2-5.8 cm, bears 2-6 flowers. Flower white, open widely; sepal lanceolate 2.3 x 0.45 cm; petal the same shape and length, but much narrower; labellum
white and yellow, 1.6 cm long with several calli between side lobes and three larger one near to the apical end, side lobes erect, yellow with red stripes, obtuse,
the lower margin curved, mid-lobe triangular, acute; column arching, white
above, yellow with fine red stripes under, extending just as far as side lobes.
Distribution : Mt. Sago West Sumatra, Cameron Highland, Pahang, Mt. Tahan,
Peninsular Malaysia.
Habitat : mountain forest orchid from 1,700 m asl, flowering time: February, July,
and September.
Note : the most conspicuous character of this species is the peduncle three times
longer compare to the rachis. Leaves were also with wide variety in shape and size; from almost orbicular to elliptic and sometime longer. During this study
there was no specimen examined from Sumatra but Comber 2001 described this species from Mt. Sago, West Sumatra.
Specimen examined : Malay Peninsula, Pahang, H.N. Ridley 16133 SING;
Pahang, HN Ridley SING; Mt. Tahan, July 1923, CB Kloss 12133 SING; Mt Tahan, February 1921, E. Seimund 221 SING; Cameron Highland, September
1956, H.M. Burkill 860 SING; Cameron Highland, April 1930, 1,800 m asl, R.E Holtum and M.R. Henderson 23398 SING; Batang Padang, L. Wray Jr. 1616
SING.
11. Epigeneium macropodum Hook.f. Summerh. Plate 9
