378 | ORCHIDACEAE 
ing.—NODDING-CAPS.—About 10 species, natives of tropicel and temperate 
America.—Sum.—fall. 
Column 10-12 mm. long: petals spatulate: capsule as long as the stalk or PLN 
Shorter. 1. T. trianthophora 
Column 6-7 mm. long: petals linear or nearly so: capsule 
much shorter than the stalk. 2. T. cubensis. 
1 T. trianthophora (Sw.) Rydb. Stem 5-30 em. tall: leaf-blades suborbicu- 
lar to Mis orbieular or ovate, 5-20 mm. long, dos elasping, but spreading: 
flowers nodding, white flushed with p 
dig sepals linear- uu. 12-15 m 
ong: petals spatulate: lip 12-15 mm 
long, the middle eu i mm. T or or more: 
eapsule 10—14 m [Pogoma pen 
dula ( m Tul. ]-- QNonors-srrun- 
C THREE- S.)—Rich woods, vari- 
ous provinces, ee eee Plain, Fla. 
to Kans., Wis., and Me. 
2. T. p ds. E p depo Ames. Stem 
0 leaf-blades broadly 
lir 
e lip Su mioa ims the ‘middle lobe 
3 mm. wide or pem capsule 12-15 mm. long.—Pinelands, S pen. Fla.— (W. I.) 
` Both s iei are irregular in their flowering Seasons; several years may elapse 
between them 
18. OPHRYS L. Scapose herbs. Leaves reduced to scales at the base 
of the scape. Flowers in a raceme subtended by 2 opposite leaf-like bracts. 
Perianth greenish or brownish purple. Sepals and petals distinct, nearly equal, 
spreading or reflexed. Lip more or less drooping, 2-lobed at the apex, the lobes 
sometimes elongate. Stigma-beak rounded. Capsule slender-stipitate. [Lis- 
tera r.]—About 12 species, natives of north temperate and arctic regions.— 
TWAYBLADES. DOUBLE-LEAF ORCHIDS. 
Lip wedge- Beth about twice as long as the petals, notched at the apex: column 
1.5 mm. long. 1. O. Smalti. 
TE ee E 10 times longer than the petals, 2-parted : column 0.5 
2, O. australis. 
1. O. Smallii (Wiegand) House. Plant 
1-3 dm. tall: blades of the go reni- 
1-3 long: 
m. 
; . reniformis mall |—(GrPsv- 
WIT CH.) —Thiekets and wooded hillsides, in 
acid humus, Blue Ridge and Appalachian 
Valley, N. CG. to Tenn. and Pa.—Spr.-sum. 
2. O. australis (Lindl) House. Plant 
1-3 dm. tall: blades of the ci) den 
j D: 1.5—2. A BE ng: 
1.5-2 m lip 
—12 mm. con ‘the lobes i "Latera australis Lindl.]—Wet acid thickets 
MINE: NNNM ee 
