二齿叶隔距兰 Cleisostoma aspersum
Distribution: Sikkim Himalayas,NE India,Bhutan,Nepal,Myanmar,Thailand and Vietnam. New record to China. | ||
A miniature to small sized epiphytic plant,10 - 20cm tall. Stem short,1 - 5 cm long,branched with numerous roots at base,covered by leaf sheaths;sheaths overlapping. Leaves 7 - 9,coriaceous,linear-oblong,sharply and obliquely bi-lobed at apex,6 - 15 cm long,0. 8 - 1. 5 cm wide,the lobules often erose,pale-green to dark green,sheathing at base. | ||
Inflorescence 2 - 3,axillary,from base of leaf sheaths,10 - 20 cm long,shortly branched,peduncle slender,glabrous,dark-purple,5 - 12 cm long;floral bracts ovate-lanceolate,subacute,1 - 1. 5 mm long,distantly placed;rachis 3 - 10 cm long; pedicel and ovary glabrous,ribbed,3. 5 - 5 mm long. Flowers 6. 5 - 8 mm across,spreading or reflexed;Sepals and petals brownish,with rose markings along midribs;dorsal sepal ovate,3. 5 - 4 mm long,2 - 2. 5 mm wide,obtuse;lateral sepals broadly elliptic,3.8 - 4 mm long,2 - 2. 5 mm wide,recurved. Petals oblong-obovate,oblique,3. 8 - 3. 9 mm long,1. 6 - 1. 8 mm wide,obtuse. Lip adnate to the column,3-lobed,ca. 3 mm long,produced to a prominent spur at base,infundibulate,fleshy,white,speckled or flushed with rose and yellow;spur ca. 4 mm long,cylindric,parallel to the ovary;lateral lobes truncate,erose at edges;midlobe broadly ovate,concave,curving upwards,acute,base with 2 cushion-like calli occluding the entrance to the spur. Column short,ca. 1. 5 mm long,white;rostellum large,decurved and slightly hooked at apex. Operculum cordate,depressed and beaked at apex,1. 5 - 1.8 mm long. Pollinia 4,orbicular,compressed attached by pairs;stipes ca. 1. 5 mm long,thickened at the middle and tapered at apex and also at base;gland small,oval. Flowering in July - August.
| ||