无距虾脊兰  转到中国兰科植物志

Calanthe tsoongiana  分类来源:中国植物志

无距虾脊兰(中国高等植物图鉴) 

Calanthe tsoongiana T. Tang et F. T. Wang in Acta Phytotax. 1 (1): 45. 1951; S. Y. Hu i n Quart. J. Taiwan Mus. 25 (3, 4): 207. 1972; 浙江植物志7: 528. 图7-706. 1993. 

7a.无距虾脊兰(原变种) 

Calanthe tsoongiana T. Tang et F. T. Wang var. tsoongiana 

Forests, damp rocks; 400-1500 m. Fujian, Guizhou, Jiangxi, Zhejiang.

 

This species is one of the smallest flowers in the genus. The flower is similar to Calanthe mannii Hook.f., but the flower is spaceless and has no folds on the labial plate.

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Plants ca. 32 cm tall. Rhizome short. Pseudobulbs subconic, ca. 1 cm in diam., with 3 or 4 sheaths. 

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Leaves 2 or 3, well developed at anthesis, not deciduous; blade obovate-lanceolate or oblong, (13-)27-37 × (2-)5.5-6 cm, abaxially puberulent, apex acuminate; petiole-like base 8-19 cm, usually forming a pseudostem, though sometimes short and pseudostem inconspicuous. 

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Scape arising from axil of current year’s leaves, erect, 33-55 cm, densely hairy, with a scalelike sheath near middle; rachis 14-16 cm, laxly many flowered; floral bracts persistent, ovate-lanceolate, 3-4 × 1.5-2 mm, membranous, glabrous, apex acute. Flowers pale purple, small; pedicel and ovary 10-15 mm, puberulent. Sepals similar, oblong, 6-7 × 3-4 mm, abaxially puberulent below middle, 5- or 6-veined, apex acute or subobtuse. Petals subspatulate, 5-6 × ca. 1.7 mm, 3-veined, apex acute or obtuse; lip adnate to base of column wings, ca. 3.2 × 3 mm, spurless, deeply 3-lobed; lateral lobes suboblong or axe-shaped, 2-2.5 × 1.3-2.5 mm, apex rounded; mid-lobe oblong or ovate, 2-2.5 × 1-2 mm, apex slightly dilated, truncate or retuse and apiculate; disk without lamellae or calli. Column ca. 3 mm, thick, dilated at apex, adaxially with short hairs; rostellum small, 2-lobed; pollinia obovoid or pear-shaped, equal in size, ca. 1 mm, with caudicles. 

 

 

 

 

 

 

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7b.贵州虾脊兰(变种)

 

Calanthe tsoongiana T. Tang et F. T. Wang var. guizhouensis Z. H. Tsi in Aeta Phytotax. Sin. 23 (5): 386. 1985, et in Bull. Bot. Res. 13 (4): 322. 1993.

 

唇瓣比原变种大;侧裂片近斧头形,长宽均2.5毫米,先端截形,向外伸展;中裂片卵形,向先端扩大,近先端处宽2毫米,先端凹并具1个细尖,基部具爪。花期4月。

 

产贵州东北部(江口县)。生于海拔约800米的山地密林下。(模式标本产地)



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