488 ORCHIDACE^E. (ORCHIS FAMILY.) 



3. H. distans, Griseb. Stem leafy at base (1 high) ; leaves elliptical- 

 oblong, acute (4' - 0' lung) ; racemes few-flowered ; bracts obi Dug-lanceolate, 

 shorter than the ovary ; flowers distant (4" long) ; petals 2-parted, the upper 

 lobe oblong, the lower linear ; lip 3-parted, the segments linear, spreading ; 

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



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

 lea\ es oblong ; spike loosely few-flowered ; bracts oblong, as long as the ovary ; 

 lateral sepals ovate-laiiceolate, the upper ovate; lower lobe of the petals fili- 

 form, twice the length of the upper; lateral lobes of the lip filiform, longer 

 than the middle one; spur 4' -5' long. Sumter County, Florida (F. L. 

 Lewton). 



20. SPIRANTHES, Richard. TWISTED Oncms. 



Sepals and petals nearly equal the lateral sepals diverging, dilated at the 

 base, the upper one connivent with the petals. Lip clawed, concave, fur- 

 nished with two callosities near the base, clasping the short column below. 

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

 masses 2, ohovate, 2 -cleft, fixed to a common gland of the stigma, powdery. 

 Knot 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 s/iles of the untwisted s/>ik<'. 



1. S. cerriua, Kichard. 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 thau 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" long. 



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

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

 woods, near Home, Georgia. Sept. 



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

 acute, short petiled, 1' long; scape 6' high, pubescent above; sheaths 7, free 

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

 twisted ; flowers y long, longer than lanceolate bracts; perianth H" 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 (f/ 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 (Gattinger), and northward. 



* * 5))//."rs twisted, hr highly the flowers into a single straight or spiral ron\ 



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

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

 earlv withering blade ; flowers all on one side of the rachis or sparingly spiral, 

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



