ORCHIDACEiE. 229 



****** Pollen-masses 4: no stalks or glands. 



11. iHlcros'tylis. Small herbs from solid bulbs ; the scape bearing a 



single leaf and a raceme of minute greenish flowers. Column 

 very small, terete, with 2 teeth at the top, and the anther between 

 them. Petals thread-like or linear, spreading. 



12. Llp'arls. Small herbs from solid bulbs; the low scape bearings 



radical leaves and a raceme of a few greenish flowers. Column 

 elongated, incui'ved, margined at the apex. Petals thread-like or 

 linear, spreading. Anther lid-like. 



13. Corallorhi'zii. Brownish or yellowish plants, with the small dull 



flowers in spikes or scapes which are leafless or have mere sheaths 

 instead of leaves. Bootstocks branching and coral-like. Peri- 

 anth gibbous or slightly spurred below. Lip with 2 ridges on the 

 inner part of the face. 



14. Aplec'trnni. Somewhat like the last, but the perianth is not gib- 



bous below, and the rootstock, instead of being coral-like, is slen- 

 der, and produces 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 stigma, and a triangnlar body, 

 which is the rufUment nf a third, at the bade oftlie stigma. Pollen 

 loose andpowdery o'- pulpy. 



15. Cyprlpe'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. 



1. ORCHIS, L. Orchis. 



0. speeta'bilis, 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. 



a. HABENA'RIA, Willd., R. Br. Rkih-Orchis. 



1. H. tridenta'ta, Hook. Spike few-flowered, the fio-we.Ts 

 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 oblanceolate leaf below and 2 or 3 much smaller ones 

 above. — Wet woods. 



2. H. Vires'eens, 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 



