BOTANICAL NAMES 183 



Rockcress. Eng-. name for Arabis group. " Cress " 



comes from L. " crescere " (to grow), because it 



grows very quickly. 

 Rocket (rok-et). Eng. name given to several plants ; 



probably a corruption of Italian " Ruchetta," the 



name of one of them. 



Rock Rose. Eng. name of Helianthemum group. 

 Roemeria (ro-mer-i-a). After Roemer, the botanist, 



died 1819. Second bot. name. 

 Romanzovianna. After Count Romanzoff, a Russian 



botanist. Second bot. name Drooping Lady's 



Tresses. 



Romulea. Bot. name for a group. 

 Rosa (ro-sa). L. name for the " Rose." Bot. name 



for a group. 

 Rosaces (roz-a-se-e). L. " Rosa " and " aceous " 



(like). Bot. name for Rose family. 

 Rosea (ros-ea). L. adj., " dewy," from " ros " (dew) ; 



because of the white' mealy look of the leaf, as if 



it were covered with dew. Second bot. name. 

 Roseum (roz-e-um). L. adj., " rose-coloured." Second 



bot. name. 

 Rosemary (roz-ma-ri). A corruption of bot. name 



" Rosmarinus," meaning Sea-dew, from " ros " 



(dew) and " marinus " (of the sea); so named be- 

 cause it grows well on the sea-shore. 

 Roseroot. See Rodiola. 

 Rosmarinifolia (roz-ma-rin-i-fol-ia). L. " Rosmarinus " 



(rosemary); "folia" (leaf); i.e., rosemary-leaved. 



Second bot. name. 

 RosteHata (ros-tel-la-ta). L. adj., " having a little 



beak," the nut being beaked. Second bot. name. 



