ROSACEjE. 451 



inserted around thickened margin of disk lining receptacle, articulated 

 below their apices ; anthers terminal dehiscing longitudinally. 

 Carpels 1-4, sessile or stipitate ; ovary 1-celled; style basilar or 

 ventral, apex capitate stigmatiferous. Ovule solitary, incompletely 

 anatropous ; raphe short descending ; micropyle superior extrorse. 

 Achenes 1-4, included in membranous receptacle ; seed exalbuminous, 

 embryo thick fleshy ; radicle short superior. — Perennial or annual 

 herbs ; leaves alternate lobed digitate or palmatipartite, more rarely 

 multifid; stipules adnate to sheathing petiole; flowers minute in dense 

 axillary or terminal corymbose cymes, more rarely few or solitary. 

 {Andi?ie South America, temperate and cold regions of Northern Hemi- 

 sphere India North America and Australia^ See p. Slo. 



6. Sanguisorba L. — Flowers polygamous or hermaj^hrodite ; 

 receptacle sacciform of variable depth, lined by a disk with a thick- 

 ened or cushion-like edge closing narrow throat of receptacle to a 

 variable extent. Calyx inserted in throat ; sepals 4, more or less 

 petaloid, decussate imbricate in prasfloration ; 2 lateral exterior. 

 Stamens either definite, usually 4 superposed to petals, or oo ; fila- 

 ments free inserted in throat, eitber short erect, or elongated fili- 

 form corrugated flaccid ; anthers didymous introrse. Carpels 1-4, 

 included in receptacle, free from each other; ovary 1 -ovulate ; ovule 

 descending ; micropyle superior extrorse ; style terminal, at apex 

 dilated penicillate aspergilliform stigmatiferous. Achenes coriaceous, 

 usually solitary, included in hardened 4-gonous smooth or rugose, 

 more rarely muricate or 4-winged, receptacle ; seed descending exal- 

 buminous ; radicle of fleshy embryo superior. — Herbs, perennial or 

 very rarely annual, or spiny shrubs ; leaves alternate imparipinnate ; 

 stipules lateral, adnate to sheathing petiole ; flowers capitate or 

 spicate, terminal ; peduncles naked for a long way at base solitary or 

 cymose ; flowers 2-bracteolate. {^All warm and temperate regions of 

 Northern Hemisphere}) See p. 347. 



7. Polylepis E. & Pav. — Flowers hermaphrodite; sacciform re- 

 ceptacle and disk of Sangmsorl)a. Sepals 3-5, sometimes imbricate, 

 usually finally valvate. Stamens 4-co (of Sangiiisorba) ; filaments 

 short erect. Carpel 1, more rarely 2, 3, and achenes and seeds of 

 Sanguisort)a; receptacle hardened angular spiny or winged around 

 included fruit. — Trees or shrubs ; naked branches tortuous, silky or 



c G 2 



