CYPRIPEDIUM. 35 



occasionally to rid the leaves of dust, increases in size, and flowers 

 regularly every winter. A light and airy greenhouse from which frost 

 is excluded, suits it admirably ; it may be kept even in a cold frame 

 during the summer months. It is not particular as to compost ; it will 

 grow in loam, peat, common garden soil, peat-fibre and bone dust, peat- 

 loam and sand, loam and dried cow-manure, peat-fibre and horse-droppings, 

 sphagnum moss and charcoal, and finally cocoa-nut fibre, surfaced with 

 growing Selaginella Krausiana. It is most vigorous in constitution, and 

 so defies all bad and indifferent culture, growing even under no special 

 culture of any kind." * As a plant in universal request it is often 

 grown in a vinery when such accommodation is at hand. The best 

 time to divide and repot C. insigne is immediately after flowering; in 

 making the division the roots should be carefully unravelled, and in 

 re-potting plenty of drainage should be given. 



O. javanicum. 



Leaves elliptic-oblong, 6 — 8 inches long, greyish green above, somewhat 



sparingly mottled with deep green, but sometimes deeper and with more 



spots. Scapes mottled pale green and crimson, one- (rarely two-) flowered. 



Bract about one-third as long as the ovary. Flowers 3 inches across 



vertically, with all the segments ciliolate except the labellum ; upper 



sepal cordate, acuminate, pale green with deep green veins, whitish 



towards the apex ; lower sepal ovate-oblong, smaller ; petals broadly 



ligulate, slightly deflexed, pale green clotted with minute blackish warts 



to two-thirds of their length, the distal third pale dull purple and 



destitute of warts ; lip sub-cylindric, brownish green, pale green beneath, 



the infolded lobes almost meeting at their edges, pale green spotted 



with purple. Staminode broadly reniform, with a notch in the basal, 



and a shallow sinus in the apical side. 



Cypripedium javanicum, Rwdt. Bl. Hort. Buitenz. 98 (1823), name only. Lindl. 

 in Paxt. Fl. Gard. I. p. 38 (1850—51). Van Houtte's Fl. des Serres, VII. t. 703 

 (1851). Bl. Orch. de I'Archipel. Ind. et Jap. p. 167, t. 58 (1858). 



var. — virens. 



Flowers somewhat smaller, in which the prevailing green colour is 



deeper and brighter ; the petals spreading, reflexed beyond the middle ; 



the surface of the lip more glossy and of a deeper brown. 



C. javanicum virens, supra. C. virens, Rchb. in Bot. Zeit. 1863, p. 128. Id. Xen. 

 Orch. II. p. 154, t. 162 (1870). 



The species was discovered by the Dutch botanist Reinwardt, in 

 1 826j on the mountains of eastern Java, at 3,000 — 4,000 feet eleva- 

 tion. According to Blume,t the flowers are somewhat variable in 



* F. W. Burbidge, in The Garden, XXI. (1882), p. 445. 

 + Orch. de I'Archipel. Ind. et Jap. p. 167. 



