526 CYPRIPEDE. 
labello compresso petalis linearibus spiralibus breviore, sepalis equalibus 
integris dorsali lanceolato acuminato. 
C. parviflorum. Bot. Mag. t. 911. 
C. flavescens. Redout. lil. t. 90. 
C. calceolus. Mich. bor. am. 2. 161. 
Hab. in America septentrionali ; collibus apricis inter frutices, Pennsylv. 
ad Carolin. Pursh; inter sylvas, Beck ; Canada Goldie ; mont. Alleghany, 
Drummond. (hab. s. sp.) 
Flowers scentless, larger and paler than in C. parviflorum. 
I take the characters which distinguish those two species from Sir 
W. Hooker, who, in the Botanical Magazine, t. 3024, has well explained 
their differences. They are very difficult to distinguish when dry. Both 
are closely allied to C. calceolus. ] have occasionally found the lower 
sepal bidentate, but that circumstance is very unusual. 
3. Cypripepium candidum. Willd. sp. pl. 4. 149. 
C. caule folioso 1-floro, foliis basi angustatis apice acutis, bracteá cucullatà, 
stamine sterili (lanceolato W.), sepalis integris petalisque spiralibus 
lineari-lanceolatis subzequalibus labello compresso longioribus. 
Hab. in Americd boreali ; Pennsylvania, Muhlenberg ; Canada in pratis ad 
ripas fl. S. Clair, prope arcem Gratiot, Pitcher. (hab. s. sp. comm. cel. 
Torrey.) 
I have only seen one specimen of this plant which has the leaves taper- 
ing a little to the base, a white labellum, and few hairs upon the flowers, 
which are about the size of those of C.-parviflorum. The form of the lip 
is not to be determined from my materials. 
4. CYPRIPEDIUM spectabile. Swartz. act. holm. 1800, p. 251. Salisb. in act. 
Linn, 1. 78, t. 3. f.3. Willd. sp. pl. 4.144. Bot. Reg. t. 1666. 
C. caule folioso 1-Z-floro, stamine sterili cordato-ovato obtuso, sepalis 
subzqualibus oblongis obtusis indivisis petalis lanceolatis planis latioribus 
et longioribus, labello petalis longiore ventricoso subsulcato. 
©. album.. Ait. Kew. ed. 1. 3. 303. Bot. Mag. t. 216. 
C. canadense. Mich. bor, am, 2. 161. 
C. regine. Walt. Carol. 222. fide Pursh. 
Hab. in America septentrionali ; in paludibus sphagnetisque, presertim ad 
latera montium a Canada ad Carolinam, Pursh. Goldie, &c. (hab. s. sp. 
et v. t. c.) 
'This remarkable plant is the finest of the United States Cypripediums, 
and is not uncommon in the gardens of this country, its roots being 
periodically imported. It, however, seldom lives above a year or two after 
its arrival. Those who manage it the best treat it as a greenhouse plant, 
keeping it constantly under glass, in a moderately warm atmosphere, and 
very near the light until its leaves have withered, when it is removed to a 
dry shelf till its growing season returns. Except in the colour ofthe 
flower, it is much like the Siberian C. macranthon, which, however, has the 
front sepal bifid. 
5. Cypripepium molle. Lindl. in Benth. pl. Hartw. p. 72. no. 517. 
C. caule folioso multifloro, floribus axillaribus pedunculis ovariisque 
villosis, stamine sterili oblongo cuspidato, sepalis subzequalibus acutis 
indivisis, petalis minoribus conformibus basi intüs barbatis, labelli petalis 
equalis oblongi ore truncato plano. 
