TRIANDRIA. MONOGYNli. 76 



invested by the corolla." Schrader. (Glunries 

 of the calix membranaceous, resembling folli- 

 cles.) 



Flowers in spreading" or contracted panicles, valves of 

 the corolla oiien becoming- coriaceous. 



Species. 1. .i. pensdvanicu 2. pahistns, (nearly allied 

 to the g-enus »4/ra.) 3. striata. 4:. mo'Iis. 



Of this genus there are many species in Europe, in Rar- 

 bary, and at the Cape of Good Hope. A sing-le species 

 has been found at tlie extremity of South America. 



106. ARUNDO. L. (Reed.) 



Calix 2-valvod, many- flowered. Corolla 

 vsmooth, surrounded at the base by a long vil- 

 lous wool. 



Subaquatic: ciilm tuU, in some species perennial; pani- 

 cle larg-e, diffusely branchinij; calix 2 to S-flowered; g-e- 

 nerally lon^, smooth, and membranaceous, with flow'eis 

 of nearly the same form, alternately ag-gregated, often 

 sliortly and straightly awned, and always surrounded at 

 the base with a persistent, conspicuous villous involu- 

 crum The genus Aritiulo is nearly related to Sacchanim, 

 but in the latter the calix, instead of the corolla, is sur- 

 rounded by a villus. 



Species, 1. »^. Phragmites. 2. airoides. 



The genus jlrundo, exists in Europe, in Barbary, in In- 

 da, and North America. The .i. Bonnx, and A. manri- 

 tanica of Algiers, are shrubs, and the latter is there made 

 use of to construct hedges for gardens. 



fflf F/owers collected into spikes; common recep- 

 tacle mostly scrobiculate, 



107. ELEUSINE. Gcertner. Lamark, 



Spikes digitate. — Flowers awnless, disposed 

 on one side of the rachis (or recepta^ !e.) Calix 

 carinate, many-flowered, dorsal valve larger, 

 5 to 9- nerved. Corolla 2-valved, awnless. (Flow- 

 ers all herniapiiroditc.) 



Lo'A- decumbent grasses, growing in the sands of the 

 sea-coast, or in arid wastes. Culm simple, many from the 

 same root, terminated by digitate clusters of' one-sidt:d 



