SCIENTIFIC AND POPULAR. 265 



a. 0. biennis (L.) Scop. (Oe. biennis L.). Labrador to Florida, 

 west to Kocky Mountains. Common Evening Primrose, Wild 

 or Field Evening Primrose, Night Willow-herb, Fever-plant, 

 Four-o'clock*, King's Cure-all, Tree Primrose, Large Eampion, 

 Scabish*, Scurvish; Ger. Nachtkerze; Fr. Onagre. Plant 

 mucilaginous, alterative. Var. graiuliflora Lindl. is the Com- 

 mon Evening Primrose of gardens. * 



1437. 0N6bRYCHIS, Gaertn. Sanfoin. Papilionaceae. 



Herbs or shrubs. About 70 species, Europe and southern 

 Asia. 



a. 0. viciaefolia Scop. (O. sativa Lara. ). Europe to Central Asia. 

 Sanfoin, Cinquefoil, Cockscomb*, Cock's-head plant. Everlast- 

 ing-grass, Hen"s-bill, Lucerne*, Medick Fitch; Fr. Esparcette. 

 A valuable fodder plant. 



14S8. ONOCLEA, L. Sensitive Fern, etc. Polypodiaceae, 



Ancient Greek plant-name, ''close vessel". Syn. Struthiop- 

 teris, in part. Ferns with segments of the fertile fronds enclos- 

 ing the sori. Three species, 2 in U. S. (a) 0. sensibilis L. 

 is called Sensitive Fern ; ( b ) 0. Struthiopteris ( L. ) Swz. 

 (Osmunda Struthropteris L., S. Germanica VVilld.) is called 

 Ostrich Fern. 



1439. ONONISj L. (Anonis). Rest-harrow. Papilionaceae, 



Ancient Greek plant-name, "ass" weed. Herbs. About 60 

 species, Europe and Mediterranean region. 



a. 0. arvensis L. Europe. Rest-harrow, Bomariskie, Cam- 



mock Whin, Cat Whin, Lady Whin (Scotland), Land Whin, 

 Ground Furze, Hen Gorse, Horse's -breath, Lewte, Wild Lico- 

 rice*, Sit-fast, Steadfast, Rashburn, Ramsey, Rassels, Stainch. 



b. 0. spinosa L. Europe. Rest-harrow, Stay-plow, Cammock*, 



Petty Whin; Ger, Hauhechel, Ochsenbrechkraut; Fr. Bugrane, 

 Bougrane. Root, Radix Ononidis, P. G., Rad. restis bovis; 

 diuretic, lithontriptic, alterative. 



1440. 0X0p6rD0N, L. Cotton Thisile. Compositae. 



The ancient Greek name, "asses' flatus". Thistle-like plants 

 with decurrent leaves. About 12 species, Old World. 



a. 0. acanthium L. Europe and Asia, cult, in IT. S. Cotton 

 Thistle, Argentine Thistle; Crab-, Down-, Musk-, Oat- or Queen 

 Mary's Thistle, known in England as Scotch Thistle, see 381 

 (b);"Ger. Eseldistel, Krebsdistel. 



1441. ONOSMA, L. Onosma. Boraginaceae. 



From Greek, "ass smell". Syn. Maharanga DC. Bristly 

 or hoary herbs. Adout 70 species. Mediterranean region to 

 India. The roots of (a) 0. echioides L., Europe (Ger. Lot- 

 wurz) and of (b) 0. Emodi Wall (M. Emodi DC), India, 

 yield a red dye. 



1442. ONOSMODIUM, Michx. False Gromwell. Boraginaceae. 



From Greek, "resembling Onosma". Syn. Lithospermum, 

 in part. Hispid or hirsute herbs. About C species, N. Amer- 

 ica; 5 in U. S. 



