566 RHODOSCIADIUM 



Rhodosciadium S. Wats. Umbelliferae (in. 6). 5 Mexico. 



Rhodosepala Baker. Melastomaceae (i). 3 Madag. 



Rhodospatha Poepp. et Endl. Araceae (n). n S. Am. 



Rhodospbaera Engl. Anacardiaceae (3). i E. Austr. 



Rhodostachys Phil. Hromeliaceae (4). 7 S. Am. Cult. orn. infl. 



Rhodothamnus Reiclib. Ericaceae (i. 3). i E. Alps, E. Siberia. 



Rhodotypos Sieb. et Zucc. Rosaceae (in. i). i Japan, R. kerrioides 

 S. et Z., a cult. orn. fig. shrub. It has opp. 1., found in no other 

 plant of the fam., except in seedlings of Primus. There is an epicalyx 

 (see Potentilla). 



Rhoeadales. The igth order of Archichlamydeae. 



Rhoeadinae (Warming). The 9th order of Choripetalae. 



Rhoeidium Greene (Khus p.p. ). Anacardiaceae (3). 7 Mexico, Texas. 



Rhoeo Hance. Coinmelinaceae. i C. Am., Mexico. Cult. orn. fl. 

 and 1. 



Rhoicissus Planch. ( Vitis p.p.). Vitaceae. 12 trop. and S. Afr. 



Rhoium (Cl.), a creek formation. 



Rhombochlamys Lindau. Acanthaceae (iv. B). 2 Colombia. 



Rhomboidal, of rhomboid shape. 



Rhombonema Schlechter. Asclepiadaceae (n. i). i S. Afr. 



Rhopalandria Stapf. Menispermaceae. i W. trop. Afr. 



Rhopaloblaste Scheff. Palmae (iv. i). 2 Moluccas, New Guinea. 



Rhopalobrachium Schlechter et Krause. Rubiaceae (n. i). 2NewCal. 



Rhopalocarpus Boj. Flacourtiaceae (inc. sed.). 3 Madag. 



Rhopalocnemis Jungh. Balanophoraceae. i E. Indomal. 



Rhopalopilia Pierre. Opiliaceae. 3 W. trop. Afr. 



Rhopalostylis H. Wendl. et Drude (Kentia p.p. EP.). Palmae (iv i) 

 2 Norfolk I., New Zealand. 



Rhubarb, Rheum officinaleEzM.; -(vegetable) R. Rhaponticum L. 



Rhus (Tourn.) L. (incl. Cotinus Tourn. and Toxicodendron Tourn.). 

 Anacardiaceae (3). 130 subtrop. and warm temp. R. Coriaria L. 

 is the sumac (S. Eur.); its 1., ground fine, are used for tanning and 

 dyeing. R. Toxicodendron L. (N. Am., poison-ivy) climbs like 

 ivy. Its juice produces ulcerations or erysipelas. R. Cotinus L. 

 (Medit. to China) is the wig-tree, often cult, in shrubberies. Fls. 

 polyg. The stalk of each drupe remains smooth, but the sterile parts 

 of the panicle lengthen and become hairy. Then when ripe the stalks 

 become detached at their joints, and the whole infl., with the fr. on it, 

 falls to the ground and may be blown about. The wood yields the 

 yellow dye 'young fustic.' R. verniciftra DC. is the lacquer-tree. 

 Japan lacquer is obtained from notches in the stem. A', sticcedanea 

 L. is the wax-tree of Japan ; its crushed berries yield wax. 



Rhynchanthera DC. Melastomaceae (i). 35 trop. Am. 



Rhynchanthus Hook. f. Zingiberaceae (i).' "i Burma. 



Rhynchelytrum Hochst. (Tricholaena EP.). Gramineae (5). i trop. 

 Afr. 



Rhynchocalyx Oliv. Lythraceae. i Natal. 



Rhynchocarpa Schrad. = Kedrostis Medic. (Cucurb.). 



Rbynchocorys Griseb. Scrophulariaceae (in. 3). 28. Eur. to Persia. 



Rbynchodia Benlh. Apocynaceae (n. i). 2 E. Indomal. 



Rbynchodium C. Presl= Psoralea L. (Legum.). 



