•30 NATURAL HISTORY OF PLANTS. 



GENEKA, 



I. EUOIs'YME^. 



1. Euonymus T. — Flowers hermaphrodite regular, 4-5-merous ; 

 receptacle depressed conical or more or less concave, clothed within 

 with a variable disk, oftcDer wide, broadly explanate, shortly or some- 

 times far produced between the petals. Sepals short, imbricate or 

 subvalvate, open or recurved. Petals same in number longer, imbri- 

 cate, rarely foveolate above, entire, dentate or more rarely fimbriate 

 or facially cristate. Stamens alternate with petals, and equal in 

 number ; filaments subulate, generally short, often recurved at apex ; 

 anthers more or less elongated or oftener short, sub-2-dymous, in- 

 trorsely or more or less extrorsely rimose. Germen more or less 

 immersed in disk and confluent with it, 3-5-locular or finally sub- 

 3-5-lobed ; style short, stigmatose apex not incrassate or more or 

 less capitate or lobate. Ovules in cells 1, or oftener 2, ascending, 

 with micropyle extrorsely inferior ; or descending, with micropyle 

 introrsely superior ; more rarely 4- go, inserted in two series, oblique 

 or transverse. Fruit capsular, angular or alate, coriaceous, some- 

 times echinate, loculicidally 2-5-valvate ; valves septiferous in the 

 middle. Seeds in cells 1, 2, or more rarely oo, surrounded by a 

 fleshy (coloured) aril ; albumen fleshy ; cotyledons of axile embryo 

 broad foliaceous; radicle inferior or more rarely superior. — Erect 

 trees or shrubs, sometimes climbing, oftener glabrous ; leaves oppo- 

 site petiolate (persistent), entire or crenate or dentate; stipules 

 small, caducous ; flowers in axillary pedunculate cymes, more rarely 

 solitary. [Europe^ temperate and warm Asia, Malaya^ Australia^ 

 temperate North America). See p. 1. 



2. Pachystima Eafin.^— Flowers nearly of Euonymus^ 4-merous ; 

 receptacle somewhate concave. Sepals 4 and petals same in number 

 alternate imbricate. Stamens 4, inserted outside and between the 



1 Amer. Monthl. Mag. (1818), from A. Gray, phila Nutt. Torr. et Gr. Fl. N. Amer, i. 258. 

 PI. Fendler, 29.— B. H. Gen. 361, n. 5.—Oreo^ 



