SAPINDAOE.E. 497 



slender exserted, stigmatose at apex simple not dilated ; cells 4, 

 alternipetalous ; ovules in each 2, collaterally descendent, incom- 

 pletely anatropous ; micropyle exti'orsely superior. Fruit capsular 

 membranous venose, inflated 4-lobed, shortly 4-winged, loculicidally 

 4-valvate; valves septiferous. Seeds in cells ], 2, subreniform ; 

 testa coriaceous corrugate ; cotyledons of exalbuminous or scarcely 

 albuminous embryo foliaceous oblong ; radicle sliort straight supe- 

 rior. — A rigid ramose shrub ; leaves on short twigs alternate or 

 fasciculate, simple entire linear-oblong subeoriaceous, scarcely peti- 

 olate exstipulate; flowers axillaiy solitary or few pedunculate. 

 (South Africa.) See p. 371. 



VIII. ACEKEJ5. 



73. Acer T. — Flowers hermaphrodite or oftener polygamo-dice- 

 cious ; calyx 4-12-, oftener 5-partite or fid, imbricate, generally 

 deciduous. Petals same in number alternate, imbricate, or 0. Sta- 

 mens equal to number of alternate petals ; filaments free variously 

 inserted more or less within or without an annular lobate thick or 

 thin, sometimes obsolete disk, filiform or sometimes capillary ; 

 anthers introrse, sometimes linear, 2-rimose. Germen central, 

 2-lobed, 2-locular (or more rarely o-merous), contrarywise com- 

 pressed to septum (in male flower rudimentary, effete or 0) ; style 

 inserted between lobes of germen, divided at base or more or less 

 above into 2 (or 3) linear branches, far stigmatose within and to the 

 apex. Ovules in cells 2, collaterally or subsuperposed ascendent ; 

 micropyle finally extrorsely inferior ; placenta dilated around hilum 

 in a broad (arilloid) process. Fruit 2 (more rarely 3) samaras, diva- 

 ricate, indéhiscent, produced externally above to elongate obliquely 

 dilated coriaceous or membranous reticulately nerved wings. Seeds 

 ascendent compressed ; testa membranous, arillate to hilum ; endo- 

 pleura fleshy or mucous; cotyledons of conduplicate embryo thin 

 irregularly plicate ; radicle rather longer inferior. — Large or small 

 trees ; juice aqueous, saccharine, or milky ; leaves o^jposite petiolate 

 exstipulate, simple, entii-e, palmately or siibpedately 3-7-lobed, 

 sometimes [Negimdo) pinnately 3— 5-foliolatc ; flowers in axillary or 

 terminal compound cymiferous racemes or corymbs. — Temperaie 

 Europe^ Asia, and North America, Java.) See p. 373. 



