4S8 ORCHIDACEiB. (ORCHIS FAMILY.) 



3. H. distans, Clrisch. Stem leafy at hase (1° liigh) ; leaves ellijttical- 

 ol'loiijj, aciitf (4' - 0' long) ; racemes few-liuwcred ; brarts oblong-lanceolate, 

 shorter tlian the ovary ; flowers distant (4" long) ; petals 2-parte(l, the upper 

 loi)e oblong, tiie lower linear ; lip .'J-parted, the segments linear, spreading; 

 spur as long as the ovary. — South Florida ( Curtiss). 



4. H. macroceratitis, Willd. Stem 1°- U° high, from a single tuber ; 

 leaves oMong ; sjiikc Inoscly few-tiowered ; bracts oldong.jLs long iis the ovary ; 

 lateral sejials ovate-lanceolate, the upper ovate; lower lolie (jf tlie jietals tili- 

 form, twice tiie lengtii of the upper; lateral loljes of the lip tiliform, longer 

 tiiau tiie middle one; spur 4'-.')' long. — Snniter County, Florida {F. L. 

 Leivton). 



20. SPIRANTHES, Kichard. Twisted Orciiis. 



Sepals and petals nearly eijual : the lateral sepals diverging, dilated at the 

 ba.se, the u])pcr one couuivent with tlie petals. Lip clawed, concave, fur- 

 nished with two callosities near tlie base, cla.sjjing the short column below. 

 Stigma ovate, beaked. Anther attached to the back of the column. Pollen 

 mas,ses 2, obovate, 2-eleft, fi.\ed to a common gland of the stigma, powdery. 

 — Root composed of few clustered tubers or fleshy fibres. Stem leafy at the 

 base, slieathed above. Flowers small, white, in a regular 1 -sided or spirally 

 twistei! spike. 



* Flowers on all sides of the untwisted spike. 



1. S. cernua, 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. — Grassy swamps and meadows. 

 Oct. — Stem 6'- 12' high. Leaves 4' -8' long. Flowers yellowish white, 

 3" -4" h)ng. 



Var. parviflora. Stem more slender ; leaves sliorter and broader (2'- 6' 

 long, 4" - 6" wide) ; spikes narrower ; perianth 2" long, white. — Low shady 

 woods, near Rome, Georgia. Sept. 



2. S. Storeri, Chapm. Root of four thick fibres; leaves 3-4, ovate, 

 acute, short-petioled, 1' long; scape 6' high, jiubescent above; sheaths 7, free 

 and acuminate at the apex; spike 2' long, loosely 12-flowered, glandular, not 

 twisted ; flowers ^' long, longer than lanceolate bracts; perianth 1^" long; lip 

 oblong, not recurved nor crenulate ; anther ovate. — On decaying leaves, in a 

 dense hummock, Enterprise, Florida. March. (F. A. Storer.) 



3. S. simplex, Gray. Root a single tuber ; stem short (6' high), with 

 withered leaves at the base ; spike not twisted ; flowers very small, white, the 

 lip obovate oblong, crenulate, with slender prominences at the base. — Nash- 

 ville, Tennessee ( Galtinger), and northward. 



# * Spikes twisted, bringing thejlowers into a single straight or spiral row. 



4. S. brevifolia, Chapm. Stem pubescent above ; leaves all bract-like 

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

 early witliering blade ; flowers all on one side of the rachis or sparingly .spiral, 

 horizontal, pubescent ; bracts ovate, acute, scarcely longer than the ovary ; 



