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NEW A OF APPENDICULA (ORCHID ACEAE) SPECIES FROM BORNEO MURUD, SARAWAK, MT. Wood Jeffrey J. Royal Botanic Gardens TW9 Kew, Richmond, 3AE, England Surrey The most genus Appendicula, although unlikely to be familiar to growers, is sometimes encountered in a few specialist collections and in botanical gardens. About sixty species are distributed from tropical Asia to the Pacific islands, with New Most and Guinea. the majority occurring in Indonesia, the Philippines, inhabit lowland forest or mid-elevation forest in the mountains, particularly favoring shady areas with high humidity. The leaves are arranged in two rows along the entire length of the stem. These are often twisted the base, so that the blade lying in at is The one plane and at right angles to the low intensity light source often available. flowers are very small and usually of a whitish or greenish hue, although often Bornean Blume, flushed with pink or purple. In one species, A. torta these are The subtended by colorful overlapping lilac-pink floral bracts. lip always has a on upper variably shaped, often appendage-like callus situated the surface just above the base. Appendicula distinguished from the closely related Podochilus is by having instead of four six pollinia. known from Appendicula described below, only the type material, bilobulata, is which was collected in 1967 by Bill Burtt, of the Royal Botanic Garden, Edin- burgh, on Mt. Murud (2,438 m), the highest mountain in the Malaysian state of Sarawak. The general appearance that of a Podochilus, which thought to be is I it showed on Examination of the flowers, however, to be a hitherto sight. first it Wood, undescribed species of Appendicula related to A. fractiflexa also recently J. J. described from Borneo, and A. undulata Blume, which occurs in Peninsular Malaysia, Sumatra, Java, and Borneo. Appendicula bilobulata distinguished from both by is the bilobed distinctive lip. Appendicula Wood, nov.—Type: Malaysia. Sarawak: route bilobulata sp. J. J. Camp from Ba Kelalan Mt. Murud, near 1740 m, 28 Sep 1967, to ca. 111, & Burtt Martin B. 5287 (holotype: E! herbarium material only; isotypes: SAR! K! material only, herbarium material only). Fig. spirit 1. Wood Blume Appendiculae atque A. undulatae sed fractiflexae affinis, J. J. epichilo labelli bilobulato, hypochilo appendiculo laevi upsiloide basali instructo distinguitur. Trailing, mat-forming epiphyte. Roots filiform, wiry, elongate, simple, very cm Stem minutely papillose, or hirsute, produced at intervals along stem. 12-25 mm long, very slender, branching distally, internodes 2-3 long, enclosed in persis- tent leaf sheaths. Leaves 0.7-1 x 0.2-0.3 cm, narrowly oblong-elliptic, minutely mm 2-3 obhquely retuse, mucronate, thin-textured, sheaths long. Inflorescences mm one open peduncle lateral and/or terminal, flower successively; ca. 5 long, enclosed by 2 or 3 tubular, acute to acuminate, non-floriferous bracts; rachis 0.5- mm cm ca. 1.2 long, fractiflex; floral bracts 2.5-4 long, lanceolate, narrowly acumi- mm nate. Flowers white, tip of labellum pale purple. Pedicel with ovary 4.8-5 315 CONTR. UNIVERSITY OF MICHIGAN HERBARIUM VOLUME 21 WOOD: APPENDICULA BILOBULATA 317 1997 x Dorsal long, narrowly clavate, gently curving. Sepals 3-nerved. sepal 3 1.6-1.7 mm, mm, ovate, concave, acuminate, cuspidate. Lateral sepals 6 x 1.8-2 obliquely mm Mentum oblong, acuminate, cuspidate. 5 long, oblong, obtuse. Petals 2.4-2.5 mm mm, X narrowly oblong, subacute, 1-nerved. Labellum hypochile: 5.8-6 0.9 long, tubelike, with erect sides, margins fleshy and sulcate, especially distally; provided with smooth, U-shaped basal appendage; labellum epichile 3 a fleshy, mm mm long, 4.5-5 wide across lobules, flabellate, bilobulate, lobules each ca. 3 x mm mm, Column broadly oblong, rounded, margin minutely irregular. 0.5-0.6 2.5 mm mm; apex long; foot 5 x 0.7-0.8 wings 0.4-0.5 long, oblong, obtuse, fleshy; ca. mm, x truncate; rostellum acute, toothlike; anther-cap 0.8-0.9 0.9-1 ovate, cucul- acute, smooth; pollinia obliquely clavate. late, 6, LITERATURE CITED Seidenfaden, G. 1986. Orchid Genera in Thailand XIII. Thirty-three epidendroid Genera. Operj Botanica 135-142. 89: Mount Wood, R. Beaman, and H. Beaman. 1993. The Plants of Kinabalu Orchids, 89 2. p. J. J., S. J.