ORCHID ACE^l. 151 



12. Corllorhi'za. Brownish or yellowish plants, with the small dull flowers 



in spikes on scapes which are leafless or have mere sheaths instead of 

 leaves. Rootstocks branching and coral-like. Perianth gibbous or 

 slightly spurred below. Lip with 2 ridges on the inner part of the face. 



13. Aplec'trnm. Somewhat like the last, but the perianth is not gibbous 



beloio, and the rootstock, instead of being coral-like, is slender, and pro- 

 duces each year a solid bulb or corm. Lip with 3 ridges on the palate. 

 Scape with 3 greenish sheaths below. 



* Anthers 2, one on each side of the stinma, and a triangular body, which in 

 the rudjment of a third, at the back of the stigma. Pollen loose and 

 powdery or pulpy. 



14. Cypripe'dium. Lip a large inflated sac, into the mouth of which the 



style is declined. Sepals and the other petals much alike, the former 

 apparently only 2, two of them being generally united into one under 

 the lip. Leaves large, many-nerved. Flowers solitary or few. 



l. ORCHIS, L. ORCHIS. 



0. SpectaTrilis, L. (SHOWY ORCHIS.) Scape 4-angled, 4-7 

 inches high, bearing a few flowers in a spike. The arching upper 

 lip pink-purple, the labellum white ; each flower in the axil of a 

 leaf -like bract. Rich woods. 



a. HABENA'RIA, Willd., R Br. EElN-OfiCHis. 



1. H. tridenta'ta, Hook. Spike few-flowered, the flowers 

 very small, greenish-white. Lip wedge-shaped, truncate and 3- 

 toothed at the apex. Spur slender, longer than the, ovary, curved 

 upwards. Stem less than a foot high, slender, with one oblance- 

 olate leaf below and 2 or 3 much smaller ones above. Wet woods. 



2. H. Vires'cens, Spreng. Stem 10-20 inches high. Spike of 

 small greenish flowers at first dense, with the bracts longer than 

 the flowers, at length long and loose. Lip oblong, almost trun- 

 cate at the tip ; a tooth on each side at the base, and a nasal 

 protuberance on the face. Spur slender, club-shaped. Leaves 

 ovate-oblong or oblong- lanceolate, the upper ones gradually nar- 

 rowing and passing into bracts. Wet places. 



3. H. vir'idis, R. Br., var. bracteata, Reichenbach. (H. 

 bracteata, R. Br., in Macoun's Catalogue.) Spike many -flowered, 

 close. Flowers small, greenish. Lip oblong-linear, 2-3-lobed at 

 the tip, much longer than the very short and sac-like spur. Stem 

 6-12 inches high, leafy, the lower leaves obovate, the upper 

 oblong or lanceolate, gradually reduced to bracts much longer 

 than the flowers. 



