CLASS XVI.j XVh. 157 



ci ASS xvi. DIADELPHIA. Stamens united by filaments in two 



sets. 



Order 5, to Order 8. P ent-octandria. From 5 to 8 stamens. 



POLYGA'LA. Calyx 5-leaved, permanent, unequal, 2 of the leafets 

 wing-like, larger, coloured, corolla irregular (or rather, calyx 3-leaf- 

 ed, corolla imperfectly papilionaceous;) capsule obcordate, 2-celled 

 2-valved. Keel of the corolla sometimes appendaged : seeds hairv - 

 (snake loot, milk-wort, low centaury, mountain flax.) 



Order 10. Decandria. Ten stamens. 

 Legume without transverse divisions or portions ; seeds numerous* 



(Stigma pubescent.) 



PI'SUM. Calyx with the divisions leaf-like, about equal : banner 

 protruding 2 folds : style compressed, carinate, villose above : legume 

 without down at the suture. (pea.) 



LA'THYRUS. Calyx with the two upper divisions shorter : style flat, 

 villose above, broader towards the top. (Stems mostly winged, leafets 

 2 or more, terminated by a divided tendril.) (sweet pea.) 



(Stigma, not pubescent.) 



PHASE'OLUS. Keel stamens and style spirally twisted together ; 

 legum compressed, falcate ; seeds sub-compressed, reniform. {bean.) 



ROBI'NIA. Calyx small, bell-form, 4-cleft, upper division 2-parted : 

 banner *arge, reflexed, roundish, legume compressed, elongated, many 

 seeded ; seeds compressed, small. (locust tree.) 



TRIFO'LIUM. Flowers sub-capitate ; legume included in the calyx, 

 not opening by valves, 1 to 4-seeded. Leaves always ternate. 

 (clover.) 



LUPI'NUS. Calyx 2-lipped, anthers, 5 oblong and 5 roundish ; le- 

 gume coriaceous. (lupine.) 



CLASS XVH. SYNQENESIA. Anthers united. 

 Order 1. Polygamia jEqualis. Disk and ray florets perfect 



A. Floret ligulate. 



LEON'TODON. Calyx imbricate, with flexible leafets ; receptacle na- 

 ked: e^rei stiped. (dandelion.) 



LA<TU'UA. Calyx imbricate, cyiindric, with the margin of the scales 

 membranaceous; receptacle naked; egret simple, stiped; seed smooth. 

 (lenure.) 



CAR"nri;s. Calyx ovate, imbricate witK prickly scales; receptacle 

 villose; egret pilose. (cmib-tooth thistle.) 



CiN r/ ARA Re< ^ptacle bristly : calyx dilated, imbiicare, scales with 

 14 



