OKCHIDACE^. 233 



6. I^IS'TEKA, H. Br. Twayelade. 

 1./ L. eordata, E. Br. Racemes crowded ; pedicels not 

 longer than the ovar^. Lip linear, 2-oleft. Column very 

 short. — Damp cold woods. 



2. L. eonvallarioi'des, Nutt. Eacemes loose and slender ; 

 pedicels longer than the ovary. Lip wedge-oblong, 2-lobed. 

 Column longer than the last. — Damp thickets. 



J. C.4.LOPO'eo.\, E. Br. Calopogon. 

 C. pulehel'lUS, E. Br. Leaf linear. Scape a foot high. 

 Flowers an inch across. — Bogs. 



8. AKETHU'SA, Gronov. Akethusa. 

 A. bulbo'Sa, L. A beautiful little bog-plant, bearing a 

 single large flower (rarely 2), with the lip bearded-crested on 

 the face. 



9. POeO'NIA, JUSS. POGONIA. 



P. ophoiglossoi'des, Nutt. A bog-plant. Sepals and 

 petals nearly equal and alike. Eoot of thick fibres. 



10, CAIYP'SO, Sallsb. CALYrso. 

 C. borea'lis, Salisb. A beautiful little plant growing in 

 mossy bogs. The lip woolly inside ; the petals and sepals 

 resembling each other,' lanceolate, sharp-pointed. Column 

 winged. 



II. miCKOS'TYLlS, Nutt. Adder's Mouth. 



1. M. monophyl'lOS, Lindl. Leaf sheathing the base of 

 the stem, ovate-elliptical. Eaoeme spiked, long and slen- 

 der. Lip long-pointed. — Cold swamps. 



2. M. OphiOglOSSOi'des, Nutt. Leaf near the middle of 

 the stem , ovate, clasping. Eaoeme sAdrt. Lip 3-toothed. — 

 Damp woods, not so common as the last. 



18. lilF'AKIS, Hichard. Twayblade. 

 L. LoBSe'lii, Eiohard. Lip yellowish-green, muoronate, 

 shorter than the unequal petals and sepals. Leaves ellip- 

 tical-lanceolate or oblong, keeled. — Bogs. 



