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Specimen examined : West Sumatra, Barisan Range, Air Sirah, above Padang,
1,000 m asl, March 6, 1974, Ed F. de Vogel 2835, sterile BO; Jambi, Mt. Kerinci 1,000 m asl, June 2008, Wiguna Rahman 107 BO.
15. Epigeneium triflorum Blume. Summerh. Plate 13-14
Desmotrichum triflorum Blume, Bijdr. 1825 551. Dendrobium triflorum Blume Lindl., Gen. Spec. Orch. Pl. 1830 77.
Sarcopodium triflorum Blume Rolfe, Orch. Rev. 18 1910 239. Epigeneium triflorum J.J. Sm. Summerh. comb. nov., Kew Bull. 1957 265;
Comber, Orchid of Java 1990 245-247.
Rhizome terete, creeping, branching, tough, 2.5 -7 mm in thickness,
covered by brown cataphylls, about 12 layers, elliptic, acute, lower ones is the
smallest. Root terete, fibrous, 1-1.5 mm in thickness, branching, mostly at lower part of rhizome. Pseudobulb almost globose
– ovoid or long ovoid, 1-4.5 cm x
0.8-2 cm, yellow, shiny, bears 2 or 3 leaves. Leaves linear to strap shape, obtuse, obliquely bilobed, petiole 0.5-0.7 cm. Inflorescence single come out between two
leaves, long peduncle, 2 bracts sterile, tubular, acute, rachis almost the same, bears 3
– many flowers. Flower white flushing with light yellow; dorsal sepal long elliptic, acute; lateral sepal lanceolate, acute, broader at the base; petal
rather spathulate, acute; labellum trilobe, side lobe erect, apex of midlobe
rhomboid, acute, the margin curved backward; column erect, with short stelidia. Two varieties within this species:
Epigeneium triflorum var. orientale J.J. Sm. J.B. Comber, Orchid of Java 1990 246.
Dendrobium elongatum Lindl. var. orientale J.J. Sm., Bull. Dep. Agr. Indes. Neerl. 43 1910 52.
Type: East Java, Lumajang, culta. BO, holo; L, iso n.v
Leaves linear to strap shaped, 17.2-26.9 x 0.7-2.45 cm, obtuse, obliquely
bilobed, petiole 5-7 mm, shiny, coriaceous. Inflorescence single between two
leaves, peduncle c. 9.15 cm, 2 bracts sterile, tubular, acute, rachis c. 9.3, bring
more than 5 flowers. Flower white flushing with light yellow; dorsal sepal long
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elliptic, 2.7 x 0.6 cm, acute, 7 nerved; lateral sepal long elliptic, 2.6 x 0.7 cm, acute, broader at oblique base; petal spatulate, 2.8 x 0.4 cm, acute, labellum
trilobes, 1.45x1.2 cm, side lobes erect 9 x 5 mm, mid-lobe with 2 calli near the
apex, apex rhomboid, acute, the margin curved backward; column erect, 9 mm,
column foot 4.5 mm.
Epigeneium triflorum var. triflorum J.J. Sm. J.B. Comber, Orchid of Java
1990 245.
Leaves 2 or 3 on each top of pseudobulb, linear, slightly obtuse, obliquely
bilobe, shiny. Inflorescence from between leaves, peduncle 10.3 cm, thin, with 2 sterile bracts, rachis 4.9 cm, brings more than 3 flowers. Flower white; dorsal
sepal lanceolate, acute, 2.05 x 0.6 cm, 5 nerved; lateral sepal lanceolate, acute,
wider at base, 2.15 x 0.7 cm, 5 nerved; petal rather spathulate, 2.1 x 0.35 cm, acute; labellum trilobe, 1.65 x 1.15 cm, with erect side lobe 8.5 x 4 mm,
triangular, with purple streaks on inner surface; mid-lobe with two ridge from the base of toward the center, three knobs near the apex, the middle one is the longest
and placed nearer to the base, apex of mid-lobe rhomboid, acute, yellow in the middle, white margin, and gradually curved backward which make this part seem
narrow; column 9 mm, white, inner suface front, light yellow with short red
streak, column foot c. 5 mm, stelidia very short.
Distribution
: Mt. Gede-Pangrango, Mt. Halimun, Mt. Salak, Mt. Tangkuban Prahu West Java; Mt Slamet Central Java; Lumajang and Pasuruan East Java.
Habitat : Mountain forest at Montana zone from 1,500 m asl, on higher branches
which is exposed to sunlight. Flowering time: March, April, and June to October.
Note : some variation was found on the vegetative parts of this species. Leaves
vary from linear to strap shape, color from light green to dark green, surface waving or flat, and the leaf number 2 to 3 on each pseudobulb. Specimens also
show the consistency of combination between 2 and 3 leaves in certain individual plant. Flower size sometimes differs among individual plant, usually it has the
same size with E. cymbidioides but some are smaller. Another variation is observed for specimens with deep curved tepal backward so that its appearance
slightly different compared to E. cymbidioides, this species has white tepal,
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mostly acute and less fleshy while E. cymbidioides has dull yellow, obtuse and fleshy tepal. According to Comber 1990 this species endemic to Java but there
are some living collection in Bali Botanic Garden but locality is unknown.
Specimen examined: East Java, Lumajang, culta BO, holotype; Lumajang,
August 1954, Connell E. s.n BO; Pasuruan, June 1946, C.G.G.J. van Steenis 7385 BO; West Java, Preanger, 1,500 m asl, June 1905, R.C. Backer vd Brink
182 BO; Mt. Gede, 1,450 m asl, March 1972, Ed de Vogel 1349 BO; Mt. Kamojang 1,500 m asl, Van Leuween
– Rejnvaran 2425 BO; Central Java, Baturraden, 800 m asl, C.04033 BO.
16. Epigeneium wichersii Schltr. Summerh. Plate 15.
