452 NATURAL HISTORY OF PLANTS. 



villous; leaves alternate 3-foliolate or imparinnate ; petioles broad 

 membranous sheathing stipulaceous at base; flowers bracteate in 

 interrupted slender pendulous racemes. {Peru, Bolivia, Andine 

 Colombia.) See p. 350. 



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

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

 Calyx 3-5-phyllous imbricated. Stamens oo , free; filaments fili- 

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

 Carpels 2-4 (of Sanguisorhd), included in receptacle. Fruits and 

 seeds of Sanguisorha ; 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. 



9. Acsena Vahl. — 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 3-8-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 Sanguisorba) ; style subterminal, apex stigmatose, peltate or 

 dilated, fimbriate. Achenes awned or spinescent included in smooth 

 or tuberculate hardened receptacle ; seed pendulous, radicle of fleshy 

 exalbuminous embryo superior. — Herbs, usually suff'rutescent 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, 

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

 Australia, Sandwich Islands, California, South Africa.) See p. 351. 



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

 ceptacle ovoidal or compressed-4-gonous, winged or slightly tubercu- 

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

 2, 3 (of A can a). Carpel 1 (of Sanguisorba) ; style at apex dilated 

 penicillate stigmatiferous. Achene 1, included receptacle; baccate 

 glabrous or shghtly tuberculate under the iipex, rarely 4-alate {Tc- 

 Iraglochin). ^eedoi' Sr///g/f/\orba. — Shrubs, bushy rigid ; leaves alter- 



