282 ORCHIDACE^. Calopooon. 



11. CALOPOGON. R. Brown in hort. Kew. (ed. 2.) 5. p. 204 ; Lindl. Orchid, p. 474. 



CALOPOGON. 

 [From the Greek, kalos, beautiful; and pogon, beard ; in allusion to the beautiful bearded lip.] 



flower (apparently) inverted. Sepals and petals somewhat equal, spreading, distinct. Lip 

 on the upper side of the flower, erect, unguiculate, conspicuously bearded. Pollen angular. 

 — Root pseudobulbous. Leaves nearly radical, ensiform. Flowers few, large, racemose. 



1. Calopogon pulchellus, R. Br. " Calopogov,. 



R. Brown, I. c. ; Nutt. gen. p. 194 ; Ell. sk. 2. p. 499 ; Bart. fl. N. Am. 2. t. 68 ; Sweet, 

 Br. fl. gard. t. 115; Torr. compend. p. 321 ; Beck, bat. p. 345 ; Darlingt. fl. Cest. p. 504 ; 

 Hook. fl. Bor.-Am. 2. p. 202. Limodorum tuberosum, Linn. sp. 2. p. 950; Michx. fl. 2. 

 p. 159. Cymbidium pulchellum, Willd. sp. 4. p. 105 ; Pursh, fl. 2. p. 592 ; Bigel. fl. 

 Bost. p. 326. 



Scape swollen at the base into a small roundish tuber, 12 - 18 inches high, slender. Leaf 

 usually solitary, situated on the lower part of the scape, 6-8 inches long and ^ - f of an 

 inch wide, somewhat rigid, marked with numerous nerves. Flowers 3-8, about an inch 

 in diameter, bright purple, fragrant. Bracts lanceolate, . shorter than the ovary. Sepals and 

 petals ovate-lanceolate, acute. Lip above ! broadly dilated at the summit, conspicuously 

 bearded with white, orange-colored and purplish clavate hairs. Column on the lower side of 

 the flower incurved, dilated and winged above. 



Sphagnous swamps : frequent. Fl. June - July. A highly ornamental plant. . 



Tribe V. NEOTTIEJE. Lindl. 

 Anther parallel with the stigma, erect. Pollen consisting of loosely cohering grains. 



12. SPIRANTHES. L. C. Rich. ; Lindl. Orchid, p. 463. ladys-tresses. 



[From the Greek, speira, a cord, and aiUhos, a flower; the spike of flowers being twisted like the strands of a rope.] 



Flowers ringent ; exterior sepals oblique, and including the base of the lip. Petals and upper 

 sepal connivent. Lip parallel with the column, the lower part of which is embraced by 

 its base, oblong, channelled, with 2 callosities at the base. Column curved : stigma ovate, 

 mostly with a short acuminate beak, finally 2-cleft. Pollen-masses 2, powdery, 2-lobed. — 

 Flowers small, in a close spiral spike. 



1. Spiranthes gkacilis, Bigel. (Plate CXXVIII.) Slender Lady' s-tresses. 



Radical leaves small, ovate or oblong-lanceolate, petiolate (fugacious) ; scape slender, 

 elongated, sheathed with several leafless sheaths ; spike slender, the flowers longer than the 



