292 
ORCHIDEjE. 
ceolate. Spike cylindrical elongated. Bracts 3-nerved. Fl. 
rose-purple, fragrant. Pollen-cells open in front and below, 
stopped below by oblong glutinous valves to the broader ends of 
which the glands of the pollen-masses are attached. These 
valves are quite distinct from the stigma. — Hilly pastures. P. 
VI. VII. 
2. G. albida (Rich.) ; lip 3-lobed, lobes unequal entire, middle 
lobe longest and broadest, sep. and lateral pet. connivent, spur 
much shorter than the germen, tubers clustered. — Habenaria 
R. Br. Orchis Sm. E. B. 505. Peristylus Lindl.— St. 6—12 in. 
high. L. oblong, obtuse, upper lanceolate acute. Spike elon- 
gated, cylindrical, dense. Bracts 3-nerved. Fl. small, yellowish 
white, fragrant. — Mountain pastures. P. VI. VII. 
3. Aceras R. Br. 
1. A. anthropoplwra (R. Br.) ; lip 3-parted, segments linear- 
filiform, middle one bifid. — E. B. 29. — Tubers ovate. Height 
8 — 12 in. Spike long, lax. Fl. greenish-yellow. 9, Sep. ovate, 
acute, connivent, margined with purple, including the linear-lan- 
ceolate obtuse petals. — Dry chalky places. P. VI. E. 
4. Habenaria R. Br. 
1. H. viridis (R. Br.) ; spur very short 2-lobed, lip linear flat 
3-pointed middle point the shortest. — E. B. 94. R. Icon. f. 813. 
Peristylus Lindl. Himantoglossum Reich. — Lip with 3 tubercles 
at its base, 1 central, 2 lateral. Stigma oblong, slightly emar- 
ginate above. Glands of the pollen-masses connected by an 
elevated transverse line. Sep. and pet. connivent. Tubers pal- 
mate. Fl. green, lip browner. St. 6 — 8 in. high. — Pastures. 
P. VI. VII. Frog Orchis. 
2. H. bifolia (Bab.) ; spur twice as long as the germen, lip 
linear entire , pet. connivent obtuse, anth. oblong truncate : pollen- 
masses parallel. — E.B. S. 2806. R. Icon. f. 1143. Platanthera 
Rich., Koch, Lindl. — About a foot high. Radical 1. usually 2, 
elliptical. Stem I. small, lanceolate, resembling the bracts. 
Spike slender. Fl. white. Central line between the cells of the 
anth. a furrow in front and a keel behind. Stigma truncate, 
emarginate with pointed lobes. — Heathy places. P. VI. VII. 
Lesser Butterfly Orchis. 
3. H. chlorantha (Bab.) ; spur twice as long as the germen, 
lip linear entire, pet. connivent obtuse, anth. truncate twice as 
broad at its base as at its top : pollen-masses ascending obliquely 
converging upwards. — E. B. 22. R. Icon. f. 1145. Platanthera 
Rich., Koch, Lindl. — Usually taller and stouter than the pre- 
ceding. Spike usually lax but sometimes dense. Fl. larger. 
Central line between the cells of the anth. a prominent ridge in 
