4^2 NATURAL mSTORY OF PLANTS. 



villous; leaves ulternate .'Moliolute or iniparinnate ; petioles broad 

 membranous sheathing stipulaceous at base; flowers bracteate in 

 interrupted slender ])endulous racemes. {Peru, Bolivia, Jndi/fe 

 Colomfjia.) Sec p. 350. 



8? Bencomia Webb. — Flowers dioecious; receptacle of males 

 minute scarcely concave, of females sacciform, constricted in throat. 

 Calyx 3-5-pliyllous imbricated. Stamens co , free; filaments fili- 

 form tortuous ; anthers introrse ovate-rotnndate, in female flower 0. 

 Carpels :2-4 (of Sanf/insorba), included in receptacle. Fruits and 

 seeds of Sanginmrha • carpels included in finally drupaceous recep- 

 tacle.— Bushy shrubs ; leaves alternate imparipinnate; stipules adnate 

 to sheathing base of petiole ; flowers sessile 2-bracteolate, arranged 

 in long pedunculate axillary spikes. {Canary Islands, Madeira.) 

 See p. 351. 



!). Acsena Yahl. — Flowers hermaphrodite ; receptacle sacciform, 

 obconical or turbinate, terete or angulate, naked tuberculate or with 

 hooked prickles, constricted in throat, lined by a glandular disk. 

 Calyx 3-S-phyllous, slightly imbricated in prsefloration. Stamens 

 1-10, inserted in throat of receptacle, one or more free in front 

 of each petal. Carpels 1, 2, included in receptacle; ovary 1 -ovulate 

 (of Sanytiisorba) ; style subtermiual, apex stigmatose, peltate or 

 dilated, fimbriate. Achenes awned or spinescent included in smooth 

 or tuberculate hardened receptacle ; seed pendulous, radicle of fleshy 

 cxalbuminous embryo superior. — Herbs, usually suffi'utescent at base, 

 decumbent or erect, smooth or silky ; leaves alternate imparipinnate ; 

 stipules adnate to sheathing base of petiole; flowers bracteate, in 

 interrupted spikes or heads at summit of scape-like branches. {Chili, 

 Prrii, temperate and cold regions of Southern Hemisphere, New Zealand, 

 Au.'itralia, Sandwich Islands, California, South Africa.) See p. 351. 



10. Margyricarpus R. & Pav.— Flowers hermaphrodite; re- 

 ceptacle ovoidal or C()nipressed-4-gonous, winged or slightly tubercu- 

 late, lined by a disk closing throat. Sepals 3-5. Petals 0. Stamens 

 2, 3 (of Acann). Carpel 1 (of Sanyuisorha) ; style at apex dilated 

 penicillate stigmatiferous. Achene 1, included receptacle ; baccate 

 glabrous or slightly tuberculate under the apex, rarely 4-alate {Te- 

 irn;il(,rhin). Seed of San(jiiisorha.—'6\\x\^^, bushy rigid ; leaves alter- 



