145 
HABENARIA orbiculata. 
Round-leaved Habenaria, 
GYNANDRIA MONANDRIA.— Nat. Ord. ORCHIDEjE. 
Gen. CHAn.— Corolla ringens. Labellum basi subtus calcaratum. Glandules 
pollinis nudae distinctae (loculis pedicellorum adnatis vel solutis distinc- 
tis)— ^r. 
Habenaria orbiculata ; labello lineari-lanceolato, petalis 3 superioribus 
erectis conniventibus lateralibus reflexis, anthera triangulari mutico, 
foliis binis suborbicularibus. 
Orchis orbiculata, Pursh, Fl. N. Am. v. 2. p. 588. 
Root consisting of a few large subfusiform, thick, fleshy fibres. Leaves twoj 
large, spreading, arising from the root, nearly orbicular, bright green, 
somewhat fleshy, indistinctly nerved, very obtuse. Scape about a foot 
high, simple, many-angled, naked, glabrous, terminated by a lax spike, 
from 4-6 inches in length, of yellowish-green, erecto-patent Jkwers. 
Bracteas lanceolate, nearly as long as the flowers. The three uppermost 
petals connivent, and including the anther, ovato-acuminate ; the outer- 
most ones the largest, green, the innermost rather shorter and yellower: 
the two lateral petals remarkably reflexed, so as almost to meet at the 
back, and to embrace the base of the spur and top of the bractea, their 
form is between ovate and lanceolate, and their colour green. Lip half 
as long again as the petals, linear-lanceolate, entire, yellow-green, stand- 
ing forward and incurved, the margins often reflexed ; its base prolong- 
ed into a spur, which is considerably longer than the germen, whitish, 
and hanging downwards. Anther large, green, triangular, the angles 
obtuse, ceUs distantly placed, linear-clavate, their bases much apart. 
Pollen-masses clavate, yellow, their glands standing out naked beyond 
the base of the cells. Stigma green, viscid. Germen | of an inch long, 
twisted. 
For the introduction of this highly interesting plant to 
Europe, we are indebted to the Right Honourable the Countess 
of Dalhousie, who, with a liberality and kindness that I am 
proud to acknowledge, immediately upon receiving an applica- 
tion which had been made to her Ladyship for Canadian plants, 
sent to our Botanic Garden some boxes well stored with bota- 
VOL." II. 
