462 ORCHIDACEX. (ORCHIS FAMILY.) 
beaked.  Anther attached to the back 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. eernua, 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 recurved ; 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 (1' — 2!) lanceolate or linear early 
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- 
curyed at the acute or obtuse apex, and with two tooth-like prominences at the 
base. — Open grassy swamps in the pine barrens, Apalachicola, Florida. Oct. 
and Nov. — Root of 3 fleshy fibres. Stem 1° high. Flowers 10-20, p 
long, white. 
3. S. odorata, Nutt. Stem stout, leafy ; lower leaves oblong-lanceolate, 
acute, the others diminishing upward and passing into the large lanceolate acti- 
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 19 - 2° high. Lowest leaves 9/-15! long, 1/-2! wide. Flowers yellow- 
ish-white, }/ long, fragrant. 
4. S. tortilis, Willd. Stem tall and slender, pubescent above; ae 
leaves linear, the upper small and bract-like ; spike slender, pubescent, eS 
bracts ovate-lanceolate, acuminate, longer than the ovary; lip oblong, a 
recurved and crenulate at the apex, scarcely longer than the petals, Mr to 
gland-like prominences at the throat. — Low or marshy pine barrens, #10" 7. 
North Carolina. May.— Stem 1°-2° high. Leaves 6/-10/long. Flowers 
ae 8. gracilis, Bigelow. Stem very slender, smooth throughout, seape-like; 
lowest leaves (early withering) lanceolate or elliptical, spreading; spike d 
slender; flowers minute, on one side of the rachis or sparingly spiral ek 
bracts ovate-lan olate, clasping, shorter than the capsule ; lip finely oie 
