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FOC | Family List | FOC Vol. 25 | Orchidaceae | Bulbophyllum

26. Bulbophyllum catenarium Ridley, Trans. Linn. Soc. London, Bot. 4: 235. 1894.

链状石豆兰 lian zhuang shi dou lan

Plants small. Rhizome creeping. Pseudobulbs contiguous, flattened globose to flattened cylindric, 1-7 × 1-3 mm, with a terminal leaf. Leaf subsessile; blade elliptic, 4-12 × 3-6 mm, leathery, base contracted, apex obtuse. Scapes from base of pseudobulb, erect, 25-55 mm, terminating in a solitary flower; peduncle filiform, 25-32 mm; floral bracts cupular, 1.5-2.2 mm, apex acute. Pedicel and ovary 10-22 mm. Flowers bright yellow, with or without orange veins, or entirely orange; lip dark red to purple. Dorsal sepal elliptic, 3-6.4 × 2-2.5 mm, margins erose to ciliolate distally, apex acuminate; lateral sepals elliptic, 5-9 × 3.5-5.5 mm, margins entire to slightly erose, apex acuminate. Petals ovate, 1-1.3 × 0.4-0.7 mm, obtuse, margins entire to finely erose; lip with a triangular basal part and a swollen, subglobose top part, 1.5-2 × 0.8-1.6 mm, fleshy, proximally concave because of upturned margins, margins then folding sharply downward and distinctly angular, adaxial surface coarsely verrucose distally. Column 1-2.5 mm; stelidia narrowly triangular to subulate, 0.5-1 mm, lower margin with inconspicuous, rounded wings; foot ca. 1 mm, with free part very short; anther cap subglobose, papillose. Fl. Apr-May.

Trees in forests; 2200-2300 m. Yunnan [Malay Archipelago (Borneo), Malaysia (Peninsular), Vietnam].

This species was first recorded from China, including color photographs, by Y. M. Shui and W. H. Chen (Seed Pl. Karst Region China 1: 216. 2006).


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