320 
82. OECHIDACES. 
R. Br. Orchis Sm., E. B. 505. Peridijlm Lindl.— St. 6—12 in. 
high. L. oblong, blunt ; upper lanceolate, acute. Spike elon- 
gated, cylindrical, dense. Bracts 3-veined. Fl. small, yeUo-svish 
white, fragrant. — Mountain pastures. P. VI. E. S. I. 
3. A'cEEAs E. Br. 
1. A. anihropoph' ora ("R. Br.) ; lip 3-parted, segments linear- 
filiform, middle one bifid and often with an intermediate tooth.- 
—E.B. 29, R. xiii. ^57.— Root-knobs ovate. Height 8—12 in. 
Spike long, lax. Fl. greenish yellow. Sep. ovate, acute, con- 
verging, margined with purple, including tne linear-lanceolate 
blimt petals. — Dry chalky places. P. Vl. Green-man Orchis. 
E. 
4. Habexa'eia i?. Br. Frog Orchis. 
* Sjmr very short, ttsuaUy injl<rted. CcelogI/OSSTTM Hartm. 
1. H. vir'idis (R. Br.) ; spur 2-lobed, Up linear fiat -S-pointed 
middle point the shortest. — Orchis Sm., E. B. 94. H. xiii. 434. 
Peristylus Lmdl. — Lip with 3 tubercles at its base, 1 central, 2 
lateral. Stigma oblong, slightly emarginate above. Glands of 
the poUen-masses connected by an elevated transverse line. Sep. 
and pet. connivent. Root -knobs palmate. Fl. green, lip browner* 
St. 6—8 in. high.— Pastures. P. VI. VII. Frog Orchis. E. S. I. 
•* Spur slender. Platantheha Rich. Butterfly Orchis. 
2. H. hifdlia (R. Br.) ; spur twice as long as the germen, lip 
linear entire, pet. connivent blunt, anth. oblong truncate its cells 
parallel— E. B. S. 2806. R. xiii. 429.— About a foot high. Root- 
1. usually 2, elliptic. Stem-1. small, lanceolate, resembling the 
bracts. Spike slender. Fl. white. Central line between the 
cells of the anther a furrow in front and a keel behind. Stigma 
truncate, emarginate ■with pointed lobes. — Heathy places. P. 
YI. ^1L E. S. I. 
3. H. chloran 'tha (Bab.) ; spur twice as long as the germen, 
lip linear entire, pet. connivent blunt, anth. truncate its cells 
tjoice as distant at the base as at the top. — Orchis hifolia Sm., 
E. B. 22. R. xiii. 430. — Usually taller and stouter than the pre- 
ceding. Spike usually lax, but sometimes dense. Fl. larger. 
Central line between the cells of the anther a prominent ridge 
in front and a groove behind. Space between the bases of the 
anth. -cells usually, not always, spread open. Stigma very broad, 
slightly pointed in the middle. — Moist woods and thickets. P. 
V. VI. E. S. I. 
5. O'PHRTS Linn. 
1. O. apifera (Huds.) ; lip tumid 5-lobed, 2 lower lobes pro- 
minent and with a hairy base, 2 intermediate reflexed truncate, 
