I 
sore a 2 =i 
% 
GYNANDRIA. HEXANDREA. | 39% 
= 
_ Scapes many-flowered; flowers yellow, pelle spreading, 
_ Hnear and obtuse, the inner ones much narrower; lip ob- 
cordate, spreading, obtusely 3-lobed, scarcely the length 
of the tube. * : 
_An extensive gents, exclusively indigenous to the tro- 
pical parts of America, with the exception of a few spe- 
— cies in fidia. ae a : 
at 
IL:—DIANDRIA. ~*~ + 
622. CYPRIPEDIUM. L. Swartz. R. Brown. 
Lip veutricose, inflated, saccate. Petals 4, 
the under one bifid. The column terminating 
behind ina petaloid lobe. | ae 
Roots fibrous; leaves plaited, rarely radical, with the 
scape l-flowered, stems leafy, producing trom I to 3 pur- 
plish or yellow flowers. oe 
Species. 1. C. candidum. 2, parvifisrum. 3. pubescens. 
4. spectabile. 5. urietinum. Petals 5, lip saccately calca- 
rate, stem leafy. Has. In Canada. 6. Aumile. Scape 
leafless, l-flowered; leaves 2, radical = 
Of this singular genus there are 3 other species in Si- 
beria, 1 in Japan, and 1 in Europe.. 
i 8 
HL—HEXANDRIA. 
623. ARISTOLOCHIA. L. (Birthwort.) — 
Calix none. Corolla of 1 petal, ligulate, with 
“a Ventricose base. Capsule 6-celled, many-seed- 
ed, inferior. Sg 8 ae 
Herbaceous or shrubby; stems.erect or twining; leaves” 
alternate, mostly cordate and entire, rarely 3-lobed; fluw- 
ers axillary, the tube sometimes recurved. = 
Specizs. 1. A. Sipho. (“Dutchman’s Pipe.”) 2. to- | 
mentosa. Os. Stem twining, ascending to the summits of 
the tallest trees; leaves roundish-cordate, beneath villous; 
uncles solitary, without bractes; corolla densely villous, 
2 
