140 OTrRlPEBXUM. No. 30. 



No. 30. 



CYFRIPEDIUM LUTEUM. 



English Name— Yellow Ladies' Slipper. 



French Name — Sabot de venus jaune. 



German Name — Gelb Frauenschuh. 



Officinal Name — Cypripedium radix. 



Vulgar Names — Mocasin flower, Yellows, 

 Bleeding heart, American Valerian, Yellow Umbil, 

 Male Mervine, Noah's Ark, &:c. 



Syxonyms — Cypripedium Calceolus Var, b. Lin. 



Cypr. luteum Aiton— C. Jlavesceiis Redoute— C. 

 pubescens and C. parviJlGriimyi'M^x\o\Xj Salisbury, 

 Persoon,rursh, Elliot, Torrey, Eaton, W.]3arton,&:c. 



Authorities — Wildenovv, Alton, Pursh, EllioU 

 W. Bart, flora fig. 74, &c. 



Genus Cypripedium — Perigonc 53'inphogyne con- 

 crete with the germen at the base, with five unequal 

 sepals or divisions, superior and often colored ; the 

 innermost or labellum larger, difTerent, yentricose, 

 split. Central pillar or gonophorc bearing two Anthers 

 and a terminal lobe. 



Species C. Luteum — Stem leafy, leaves broad, 

 often acute and pubescent ; flowers v\ith the labellum 

 shorter than the other sepals, saccate and compressed, 

 two inner sepals linear spiral and very long, terminal 

 central lobe deltoid nearly obtuse. 

 DESCPvIPTlON— -Roots perennial with many long, 



thick, fleshy cylindrical and flexu^&e fibres, of a pale 



