278 CLASS XVII. ORDER II. 



whitish and soft with down underneath, obtusely serrate, acumi- 

 nate. Flowers nearly as large as the hollyhock, showy, pale 

 purple. The peduncles are long, axillary and sometimes con- 

 nected with the petioles, geniculated toward the top. Outer 

 segments of the calyx about twelve, downy, linear; inner seg- 

 ments five, half ovate. Petals very large. — Found in Newton, 

 near the banks of Charles river. — August. — Perenni-l. 



The bark is fibrous and very strong, and is capable of affording 

 a tolerable substitute for hemp. 



Class XVII. DIADELPHIA. Stamens united 



in two distinct sets. 



Order II. HEXANDRIA. Six stamens. 



305. FuMARiA. Calyx two leaved ; corolla irregu- 

 lar, spurred at base ; filaments two, each with three 

 anthers ; capsule one celled, without valves, one 

 seeded. 



306. CoRYDALis. Calyx two leaved ; corolla rin- 

 gent ; filaments two, metnbranous, each with three 

 anthers; capstiie siliquose, many seeded. 



Order III. OCTANDRIA. Eight stamens. 



307. PoLYGALA. Calyx five leaved, two of the 

 leaves wing shaped and colored ; corolla with a cylin- 

 drical banner ; legume inversely heart shaped, two 

 celled. 



Order IV. DECANDRIA. Ten stamens. 



308. Genista. Calyx with the upper lip two 

 toothed, the lower three toothed ; banner oblong, re- 

 flected back by the pistil and stamens ; stigma invo- 

 lute; stamens all united. 



