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sepal 1.3 cm long, oblong, obtuse; lateral sepal 1.3 x 0.5-0.6 cm, triangular,
oblong, forming a rectangular mentum with their bases; petal strap shaped, same length as sepals; labellum trilobes, side lobes oblong, rounded in front, 6-7 mm
long, mid-lobe transversely oblong to rhomboid, acute, 3-4 mm long, three keels from the base of the labellum, the side one larger than the center ones, another
three keels in the middle of the labellum, the center one extending to the base of
the labellum; column slender. Distribution
: Mt. Singgalang, West Sumatra.
Habitat : mountain forest, found at 1,900 m asl.
Note : There was no specimen of this species found during this study. The type is
maintained in Florence Herbarium Fl and inaccessible through the website. The description was based on Kraenzlin 1910 and Comber 2001.
9. Epigeneium longibulbon Destri sp. nov. Plate 6-7
Pseudobulbus longissimus, strumolusus inferiora et cylindrical versus apicem, sine angulus, folia 2-4, differt. Type: West Sumatra, Mt. Talang 2,230-2,500 m
asl, November 14, 1988, H. Nagamasu 3414 BO, holo; L, iso.
Rhizome branching, c. 3
– 4 mm in thickness, covered by brown imbricate
cataphyll, 0.6-7.7 cm long, ovate, acute to acuminate. Root fibrous, branching,
wrinkled on surface, c. 1-15 mm in thickness, bears from lower part of
pseudobulb and also on the rhizome but less dense. Pseudobulb long c.10.5-14 x
0.6-0.8 cm, swollen at the base and cylindrical toward the apex, blunt, shiny yellow, arrange 4
– 5.5 cm apart along the rhizome. Leaves 2 – 4 on each
pseudobulb, elliptic to rather lanceolate, 8.4 – 11.8 x 1.95 – 2.9 cm, acute,
obliquely bilobe with 4-5 major secondary nerved on each side, petiole 4 – 8 mm,
shiny, and coriaceous. Inflorescence long, peduncle c. 17 cm with 2 sterile bracts,
8.5 mm, tubular, acute, translucent brown; rachis is shorter c. 7.7 cm and bring up
to 12 flowers. Flower white, labellum with yellow stripe and violet patches; dorsal
sepal 2.3 x 0.55 cm, long oval, acuminate, 7 nerved; lateral sepal almost same size but wider near to the base 2.2 x 0.65 cm, lanceolate, 7 nerved; petal 2.2
x 0.55 cm, long oval, acuminate, 6 nerves; labellum trilobes, 1.3 x 1.2 cm, side
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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
