4G2 ORCHIDACKS. (ORCHIS FAMILY.) 



beaked. Anther attached to tho hack of the column. Pollen-masses 2, obovate, 

 2-cleft, fixed to a common gland of the stigma, powdery. — Root composed of 

 few clustered tubers or fleshy fibres. Stem leafy at the base, sheathed above. 

 Flowers small, white, in a regular 1 -sided or spirally twisted spike. 



* Flowers on all sides of the untwisted spike. 



1 . S. cemua, Richard. Stem smooth below, the upper portion and thick 

 crowded spike pubescent ; lowest leaves long, linear-lanceolate, the others bract- 

 like and sheathing ; bracts ovate-lanceolate, acuminate, longer than the capsule; 

 flowers recurred ; lip longer than the sepals, contracted above the middle, wavy 

 at the recurved obtuse apex, 2-toothed at the base. — Grassy swamps and mead- 

 ows, Florida to Mississippi, and northward. October. — Stem 6'- 12' high. 

 Leaves 4' - 8' long. Flowers yellowish-white, 3" - 4" long. 



* * Spikes twisted, bringing the flowers into a single straight or spiral row. 



2. S. brevifolia, n. sp. Stem pubescent above ; leaves all bract-like and 

 sheathing, or the lowest expanding into a short (l'-2') lanceolate or linear early 



^—4 withering blade; flowers all on one side of the rachis or sparingly spiral, hori- 

 zontal, pubescent ; bracts ovate, acute, scarcely longer than the ovary : sepals 

 and petals equal ; lip oblong or elliptical, very entire, wavy on the margins, re- 

 curved at the acute or obtuse apex, and with two tooth-like prominences at tho 

 base. — Open grassy swamps in the pine barrens, Apalacbicola, Florida. Oct. 

 and Nov. —Root of 3 fleshy fibres. Stem 1° high. Flowers 10-20, 3" -4" 

 long, white. 



3. S. odorata, Nutt. Stem stout, leafy ; lower leaves oblong-lanceolate, 

 acute, the others diminishing upward and passing into the large lanceolate acu- 

 minate bracts; spike thick, pubescent, densely flowered, spiral; bracts much 

 longer than the ovary, the lower ones as long as the recurved flowers ; sepals 

 and petals equal; lip entire, recurved, oblong, dilated and crenulate at the apex, 

 and with two tooth-like hooked prominences at the base. — Muddy banks of 

 rivers, near Marianna, Florida to North Carolina, and westward. October. — 

 Stem 1°- 2° high. Lowest leaves 9'- 15' long, 1'- 2' wide. Flowers yellow- 

 ish-white, .V long, fragrant. 



4. S. tortilis, Willd. Stem tall and slender, pubescent above ; lowest 

 leaves linear, the upper small and bract-like ; spike slender, pubescent, Bpiral ; 

 bracts ovate lanceolate, acuminate, longer than the ovarj ; lip oblong, entire, 

 recurved and crenulate at the apex, scarcely longer (ban the petals, with two 

 gland-like prominences at the throat. — Low or marshy pine ban-ens, Florida to 

 North Carolina. May. — .Stem l°-2° high. Leaves 6'- 10' long. Flowers 



3" long, white. 



■>. S. gracilis, Bigelow. Stem very Blender, Binooth throughout, scape-like; 

 lowest leaves (early withering) Lanceolate or elliptical, spreading; spike very 



slender; (lowers minute, on one side of the rachis or sparingly Bpiral, smooth; 



bracts ovate-lanceolate, clasping, shorter than the capsule ; lip finely crenulate 

 on the margins, recurved and acute at the apex, with two raised ear-like promi- 

 nences at the base ; anthers 1-cleft. — 1 >amp soil, Florida, and northward. April 



and May. — Stem sheathed, 6' - 12' high. Lowest leaves I'— 2' long. Flowers 

 1" long. 



