URTICA 671 



Upas tree, Antiaris toxicaria Lesch. 



Uraclme Trifl. = Oryzopsis Michx (Gram.). 



Uragoga L. (Psychotria p.p. />//., Cephaelis Sw.). Rubiaceae (n. 5). 

 130 trop. U. (C.) Ipecacuanha Baill. (/*. Ipecacuanha Stokes) is 

 the ipecacuanha (Brazil), a herb with decumbent stem, and roots 

 thickened somewhat like rows of beads. Root used in medicine. 



Uralepsis Nutt. = Triodia R. Br. p.p. (Gram.). 



Urandra Thw. (Lasiant/ius p.p.). Icacinaceae. 10 Indoinal. 



Uraria Desv. Leguminosae (in. 7). 12 palaeotrop. 



Urbania Phil. Verbenaceae (i). 2 Chili. 



Urbanodendron Mez (Aydendron p.p.). Lauraceae (n). i E. Brazil. 



Urbanodoxa Muschler (Cremolobus p-p.). Cruciferae (i). i Peru. 



Urbanosciadium H. Wolff. Umbelliferae (in. 4 ). i Peru. 



Urbinella Greenman. Compositae (6). i Mexico. 



Urbinia Rose (Echmcria p.p.). Crassulaceae. 3 Mexico. 



Urceocharis x Mast. Hybrid Urceolina - Eucharis (Gard. Chr, 1892). 



Urceola Roxb. Apocynaceae (n. i). 8 E. Indoinal. 



Urceolate, urn-shaped. 



Urceolina Reiclib. Amaryllidaceae (i). 3 Andes. 



Urechites Muell.-Arg. Apocynaceae (n. i). 5 W.I., Florida. 



Ureljrtrum Hack. Giamineae (2). 3 trop. and S. Afr. 



Urena Dill, ex L. Malvaceae (3). 3 trop. and subtrop. Schizocarp, 

 the individual cpls. provided with hooks. Useful fibre. 



Urens (Lat.), stinging. 



Urera Gaudich. Urticaceae (i). 22 trop. Stinging hairs powerful. 

 Achene enclosed in persistent fleshy P. (pseudo-berry). 



Urginea Steinh. Liliaceae (v). 40 Medit., Afr., India. U. Scilla 

 Steinh. ( U. maritima Baker, squill), large bulbs used in medicine. 



Urmenetia Phil. (Onoseris p.p. EP.). Compositae (12). i Chili. 



Urnularia Stapf ( Willughbeia, &c. p.p.). Apocyn (i. i). 5 Malaya. 



Urobotrya Stapf. Opiliaceae. 4 trop. Afr. 



Urochlaena Nees Gramineae (10). 2 S. Afr. 



Urodesmium Naud. (Pachyloma DC.). Melastomaceae (i). 2 Brazil. 



Uropappus Nutt. = Microseris D. Don, p.p. (Comp.). 



Uropetalon Ker-Gawl. = Dipcadi Medic, p.p. (Lili.). 



Urophyllum Wall. Rubiaceae (i. 7). 40 trop. Afr. to Japan. 



Uroskinnera Lindl. Scrophularioceae (n. 4). 2 C. Am,, Mexico. 



Urospatha Schott. Araceae (iv). 15 trop. S. Am. 



Urospermum Scop. Compositae (13)". 2 Medit. 



Urostephanus Robinson^et Greenman. Asclepiadaceae (n. 4). i 

 Mexico. 



Urostigma Gasp. = Ficus Tourn. p.p. (Mor.). 



Urotheca Gilg. Melastomaceae (i). i E trop. Afr. 



Uralnea Gaertn. Compositae (10). 60 S. Afr., Abyssinia. 



Urtica (Tourn.) L. Urticaceae (i). 30 temp, (nettles). Herbs with 

 opp. 1. and slips, (sometimes united in pairs between the petioles, as 

 in Rubiaceae), usu. covered with stinging hairs. The various types 

 of infl. are well shown in the 3 Brit. sp. In general the infl. is a dich. 

 cyme with tendency to cincinnus by preference of the /3-bracteole. In 

 U. pihtlifera L. (Roman nettle) the rf and ? infls. spring side by side 

 from each node, the i catkin-like, the 9 a pseudo-head. In U. iirens 



