170 
| ARET HUSA puzsosa. 
Bulbous Arethusa. 
GYNANDRIA MONANDRIA.—Nar. Orv. ORCHIDEZ. 
Gen. Cuar.—Labellum inferne cum columna adnatum; superne cuculla- 
tum; intus cristatum. Petala mutica, basi connata. Pollen angula- 
tum.— Br. : , 
Arethusa bulbosa. 
Arethusa bulbosa, Linn. Sp. Pl. v. ii. p. 1346.—Wixp. Sp. Pl. v. iv. p. 80. 
—Pursn, Fil. N. Am. v.ii. p. 591.—Br. in Hort. Kew. ed. 2. v. 5. p. 205. 
Root a small roundish solitary tuber, with a few brownish fibres. Stem 
8 or 10 inches high, slender, erect, simple, terete, glabrous; sheathed 
from the base above the middle with 3 or 4 rather short obtuse leaves ; 
one or two of the upper are alone sometimes extended into an acumi- 
nated portion, distinct from the sheath. | 
Flower terminal, solitary, rarely two together, at the extremity of the stem ; 
large, upright, fragrant. Petals 5, oblong, broadest upwards, subacute, 
of a beautiful rose colour, subconcave, slightly incurved, the 2 inner- 
most most so ; all of them incorporated below, meeting in the front at the 
very base, and there forming a short gibbous process or spur. Labellum 
springing from within this spur, at first rising erect, then deflexed in 
its upper half, bifid at the point, minutely crenato-serrate at the mar- 
gin; the colour whitish, beautifully marked with purple anastomosing 
lines, and crested with 3 yellow pubescent lines. Column long, linear, 
greenish, its base united with the base of the petals, its extremity di- 
lated, slightly lobed and serrated, membranous, purplish, incurved. 
Stigma projecting on its upper part, on which projection the subconi- 
cal anther is situated, fixed, however, by a point on its back to the di- 
lated portion of the column; greenish, its base yellow, 2-celled, each 
cell containing two subovate, compressed pollen-masses, composed of 
numerous, yellow, subelastically cohering granules. Germen very 
short, columnar, greenish-purple; with a small ovate bractea at the 
back. 
VOL. III. 
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