小黄花石斛 Dendrobium jenkinsii Lindl
Dendrobium jenkinsii Lindl. （1839）*；Back. et Bakh. f. （1968）；图鉴（1976）*，pro parte；Z. H. Tsi（1980）， pro parte；Z. H. Tsi et S. C. Chen（1995）；Z. H. Tsi，S. C. Chen et K. Mori（1997）*；中国植物志（1999）.
Dendrobium aggregatum Roxb. var. jenkinsii（Lindl. ）King et Pantl. （1898）*；Kraenzl（1910），pro parte；Seidenf. （1985）*.
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root; |
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Stems pseudobulbous, aggregated, appressed to substrate, ovoid, compressed, 1-2.5 cm, 4-angled, ridged, with 2 or 3 nodes, 1-leaved. |
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Leaf apical, 1-3 × 0.5-0.8 cm. |
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Inflorescence lateral from pseudobulb, shorter than or nearly as long as stem, 1-3-flowered; peduncle ca. 1.4 cm, glabrous; floral bracts lanceolate, 15-25 × 4-5.5 mm, membranous, acute. Pedicel and ovary 4-5 cm, slender. Flowers ca. 4 cm, uniformly yellow-orange. Dorsal sepal oblong-elliptic, 10-12 × 5-6 mm, 5-veined, obtuse; lateral sepals narrowly ovate-elliptic, 13-14 × 4-5 mm, 5-veined, apex obtuse; mentum 4-5 mm wide. Petals elliptic-ovate to orbicular, 1-1.6 × 0.5-0.9 cm, 5-veined; lip transversely obcordate, 1.5-2.2 × 1.7-2.8 cm (when spread out), adaxial surface pubescent centrally, entire, erose. Column ca. 6 mm, thick. Flowering : April - May. |
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