Order iS8.— ORCHIDAOBjB. ggg 



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connivent and curved upwards, lip recurved almost to a Iialf circle, channeled, its 

 base embracing tlie column. — Sandy soils, S. Ga. Fla. to La. (Described from an 

 imperfect specimen resembling a Spirantlies.) St. 10 to 20' high. Lvs.-l to 2' 

 long. Perianth scarce 5" long, greenish-white. Sept., Oct. 



14. SPIRAH'THES, Rich. Ladies' Trbsses. (Gr. anelpov, a 

 wreath ; sc. the twisted spike.) Perianth ringent ; lower sepals oblique 

 and including the base of the lip ; upper sepal connivent with the 

 petals ; lip oblong, channeled, parallel with the column, and with callous 

 processes at base ; column curved, stigma ovate, rostrate, becoming 

 bidentate at apex; anther dorsal; pollinia 2, each 2-lobed, powdery. — 

 St. scape-like, bearing many white fls. in an oblique, spiral row. 



* Bpike with tho racliia twisted, and the flowers in one moderately twisted row Nos. 1, 2 



* ^ike with the rachis straight but the flowers in a dense spiral all around Nos. 8, 4 



1 Zi. grdoilis Bigelow. Slender Ladies' Tresses. Lvs. all radical, ovate or oh- 

 lanceolate, fugacious ; scape with remote sheaths ; fls. in a single row, which is 

 moderately spiral ; hp oblong-spatulate, crenulate- wavy at the recurved tip, the 

 callosities distinct ; plant nearly glabrous. — A very delicate plant, not uncommon 

 in old woods, Can. and TJ. S. Scape very slender, 8 to 1 2' high. Lvs. close on 

 the ground, 1 to 2' long, contracted to a petiole, usually withering before tho 

 flowers appear. Fls. white, fragrant. Rachis twisted more tlian the row of 

 flowers, but in the opposite direction. Jl., Aug. 



2 L. tortilis Ph. Tall, slender; lvs. mostly at base; long and linear; the cauline 

 distant and sheathing ; bract-like ; fls. in a single row, moderately twisted, on a 

 twisted rachis; perianth elongated (5"); Up oblong, acute, pinnately lobed, lobes 

 crenulate ; plant more or less pubescent above. — Grassy plains. Car. to Ala. and 

 Pla. St. 2 to 3f high, stouter than in S. graciUs. Lvs. 6 to 10' long, 2 to 5" wide. 

 Spike 3 to 5' long. Jn. Jl. 



3 S. c^rnua Rich. Zvs. Unear-la/nceolate, the lower elongated, the cauline gradually 

 smaller ; spike dense-flowered, thick, oblong, the flowers oblique and cernuoua ; 

 lip oblong, obtuse, wavy and crenulate, recurved, longer than the petals ; plant 

 pubescent above. — Can. and U. S., common in meadows, &e. St. 9 to 18' or more, 

 somewhat leafy. Lvs. 3 to 6 to 10' long, 3 to 6" wide. Spike 1 to 3' long. Fls. 

 large for the genus, fragrant. Perianth 4 to 5" long, cream-white. Aug. — Oct. 



4 S. latifolia Torr. Lvs. nearly radical, oblong or linear-lanceolate, 3 to 5-veiued ; 

 St. with 2 or 8 sheathing bracts ; fls. (small 3 to 4") in an oblong, dense spiko 

 which is somewhat twisted ; lip oblong, obtuse, crenulate-crisped on tho margin. 

 about 5-veined, callosities adnate; plant quite glabrous. — In moist grounds, Cu.. 

 to Penn. A low plant, often concealed in the grass, 4 to 8' high. Lvs. 3 or 

 more, 2 to 4' long, often obtusish. Pis. rather larger than in No. 1, white, the 

 lip yellowish, with green linea Jn., Jl. 



i5. GOODYE'RA, R. Br. Rattlesnake Plantain. (Named for 

 John Goodyer, an obscure English botanist.) Perianth ringent ; calyx 

 inflated, upper sepals with the petals vaulted, the two lower sepals 

 placed beneath and including the saccate, entire lip, which is without 

 callosities aiid abruptly acuminate and feflexed at apex ; anther on the 

 back of the free column ; pollinia 2, composed of angular grains. — 

 Bracted scapes arising from creeping rhizomes, with radical, ovate lvs. 

 and a downy spike of small white fls. 



1 Gr. rep€ns K Br. Lvs. ovate-lanceolate, obscurely reticulated witli white, lip 

 ovate, with an oblong, obtuse acumination ; column acutely 2-horned at the sum- 

 mit; spike seouud or shghtly twisted, mmutely pubescent. Rocky mounta.in 

 woods. Can. to Car. St. slender, 6 to 8' high, bearing a spike 2 to 3' long. Lvs. 

 9 to 12" in length, curiously netted with white lines, but less so than the next 

 (which is scarcely distinct from this). Jl., Aug. 



2 G. pubSscens E. Br. Lvs. ovate, and conspicuously reticulate with white; 



44 



