4G2 ORCiiiDAcr.E. (ononis family.) 



beaked. Anther nttaclit'd to tlic back of the column, rollen-m.asscs 2, ohovato, 

 2-cleft, fixed to a common ghmd of the siigma, powdery. — l\oot composed of 

 few dustenil tubers or flcsliy fibres. Stem leafy at ti)C base, shcatlied above. 

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

 * Flowers on all sides of the \intwistcd sj/ike. 



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

 crowded .'^jjike pubescent; lowest leaves long, linear-lanceolate, the otliers bract- 

 like and sheatiiing ; bracts ovate-laneeolate, 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 G'-\2' high. 

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



* * SjtiLrs twlsUd, hringinij the Jlowers into a s'nvjle straight or sj)irul roic. 



2. S. bl'evifolia, n. sp. Stem pubescent above ; leaves all bract like and 

 sheathing, or tlio lowest expanding into a short (l'-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- 

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

 base. — 0])en grassy swamps in the pine barrens, Apalachicola, Florida. Oct. 

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

 long, white. 



3. S. odoi'ata, Nutt. Stem stout, leafy; lower leaves oblong-lanceolate, 

 aeute, the others diminishing upward and passing into tlic large lanceolate aca- 

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

 longer tlian the ovary, the lower ones as long as the recurved flowers ; scjjals 

 and petals equal ; li]) entire, recurved, oblong, dilated and crcnuiatc at the apex, 

 and with two tooth-Iikc hooked prominences at the base. — ^luddy 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, ^' long, fragrant. 



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

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

 bracts ovate-lanceolate, acuminate, longer than tlie ovary ; lip oblong, entire, 

 recurved and crcnulate at the apex, scarcely longer than the jietals, with two 

 gland-like jirominences at the throat. — Low or marshy i)inc barrens, Florida to 

 Nortli Carolina. May. — Stem l°-2° high. Leaves G'- 10' long. Flowers 

 3" long, white. 



5. S. gracilis, Bigelow. Stem very slender, smooth througliout, scape-Iiko; 

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

 slender; flowers minute, on one side of the rachis or sparingly spiral, smooth; 

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

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

 nences at the base ; anthers 4-cleft. — Damp soil, Florida, and northward. Ajiril 

 and May. — Stem sheatiicd, C - lii' high. Lowest leaves I'-2' long. Flowers 

 1" long. 



