458 NATURAL HISTORY OF PLANTS. 



sheathing base of petiole, often altogether absent. Flowers axillary 

 or terminal in simple or cymiferous racemes corymbs or spikes ; 

 bracts often carried up ; pedicels axillary inserted at a variable 

 height. {Temperate and cold regions of Northern Hemisphere, moun- 

 tainous regions of tropics.) See p. 374. 



25. Gillenia Mcench. — Flowers hermaphrodite ; receptacle tubu- 

 lar 10-veined, lined by a thin disk. Sepals 5, imbricate, with 

 glandular edges. Petals 5, elongated ; praefloration contorted, more 

 rarely imbricate. Stamens 10-20 (of the Bosacece) ; filaments 

 short incurved inserted in tube ; anthers 2-rimose introrse. Carpels 

 5, alternipetalous inserted in bottom of receptacle, free or slightly 

 connate ; ovary 1 -celled ; style terminal acute stigmatiferous 

 at apex; ovules 2-12, ventral 2-seriate ascending; micropyle 

 inferior extrorse. Follicles 1-5, coriaceous partly exserted from 

 receptacle, 1-6-seeded. — Perennial herbs; rhizome rather thick; 

 branches erect herbaceous ; leaves 3-foliolate incised ; stipules 2, 

 small, or large and like the leaflets ; flowers in lax terminal cymes. 

 {North America.) See p. 377. 



26. Neillia Don. — Flowers hermaphrodite ; receptacle campanu- 

 late or turbinate, lined by a disk. Sepals 5, valvate or imbricate. 

 Petals 5, imbricate. Stamens lO-oo (of Spiraa). Carpels 1-5 ; 

 ovary pluriovulate ; ovules 2-seriate horizontal or some ascending 

 or descending. Fruit of 1-5 membranous inflated follicles or 

 legumes. Seeds l-oo , some ascending, some descending. Albumen 

 more or less thick, fleshy ; embryo fleshy. — Bushy shrubs ; leaves 

 simple dentate or lobed ; stipules large deciduous ; flowers racemose 

 or racemose-cymose. {Temperate Northern and Eastern Jsia, North 

 America.) See p. b79. 



27. Kerria DC. —Flowers hermaphrodite; receptacle shortly 

 cupuliform, lined by a pilose glandular disk. Sepals 5, imbricated. 

 Petals 5 (of Rosa) alternate, contorted or imbricated. Stamens co 

 (of the Bosacece) ; filaments free slender ; anthers dehiscing by 2 

 introrse clefts. Carpels 5, alternipetalous, or more free, inserted in 

 bottom of receptacle ; ovary 1 -celled, apex truncate stigmatiferous ; 

 ovule 1, ventral descending; micropyle superior extrorse. Achenes ; 

 seed exalbuminous ; embryo fleshy ; radicle superior. — Shrubs ; 



