SCIENTIFIC AND POPULAR. 221 



a. L. Yirg'inidnum (L. ) Kaf. (O. Virginiana L., Epifagus Amer- 

 icana Nutt. , Epiphegus Virginiana Bart. ) . Canada and eastern 

 U. S. Beech-drops, Beech-drop, Cancer-drops, Cancer- root, 

 Broom-rape, Fir- rape; Ger. Krebswurz; Fr. Orobanche de Vir- 

 ginie. Root astringent, vulnerary. 



1171. LEPTANDRA, Nutt. Culvers-root. Scrophulariaceae. 



From Greek, ''slender stemmed". Syn. Veronica, in part. 

 Kobust perennial herbs. Two species, one of Asia, one of N. 

 America (U. S. ). 



a. L. Virginica (L.) Nutt. (V. Virginica L., V. Sibirica L., L. 

 purpurea Raf. ). British America, south to Alabama, Missouri 

 and Nebraska. Culver' s-root. Culver" s-physic. Black-root, 

 Beanmont-root, Bownian's-root, Brinton-root, Hini, Oxadoddy, 

 Quital, Tall Speedwell or Veronica, Whorly-wort. Rhizome 

 diud. rootlets', Leptandra, U. S. P.; Ger. Leptandrawurzel; Fr. 

 V^ronique de Virginie, Leptandra; eraeto-cathartic, reputed 

 cholagogue, alterative. 



1172. LEPTARRHENA, R. Br. Leptarrhena. Saxifragaceae. 



Perennial evergreen scapose herb. One species, northeast- 

 ern Asia and northwestern America (U. S. ). 



1173. LEPTAXIS, Raf. 1836. Leptaxis. Saxifraffaceae. 



Syn. Tolmia:a (Kew), Torr. & Gr. 1840; Tiarella, in part. 

 Herb related to Tiarella. One species; western U. S. 



1174. LEPTILON, Raf. 1818. Horseweed. Compositae. 



Syn. Ctenotus Raf. 1836; Conyzella, Erigeron (Kew), in 

 part. Herbs with very small heads of white or greenish flowers. 

 About 20 species, America and Asia; 4 or 5 in U. S. 



a. L. Canadense (L. ) Britton(E. Canadensis L., C. Canadensis 

 ( L. ) Rupr. ) Widely distributed in Old as well as New World. 

 Canada Fleabane, Horseweed, Mare's- tail, Canada Erigeron, 

 Butter- weed, Bitter- weed, Cow's-tail, Colt's-tail, Fireweed, 

 Blood-staunch, Hogweed, Pride- weed, Scabious; Ger. Canadis- 

 ches Berufkraut, Beschreikraut. Source of oil of Canada Eri- 

 geron, Oleum Erigerontis Canadensis, U. S. P., which is re- 

 puted to control hemorrhage. 



1175. LEPT0GL6SSIS, Benth. Leptoglossis. Solanaceae. 



From Greek, ' 'slender throated". Syn. Nierembergia ( Kew), 

 in part. Herbs. Three known species, temperate regions of 

 America; 1 in U. S. 



1176. LEPT6RCHIS, Thouars 1808. Twayblade. Orchidaceae. 



From Greek, "slender Orchis". Syn. Liparis, L. C 

 Richard, 1818; Ophrys, in part. Perennial, scapose, two- 

 leaved herbs. About iOO species, most abundant in East Indies; 

 2 in U. S. 



1177. LEPT6sYNE, DC. Leptosyne. Compositae. 



From Greek, ''slender", applicable to original species. 

 Small scapose annuals with showy flower heads (yellow). 

 About 7 species, California to Arizona. 



