

PENTANDRIA DIGYNIA. 325 



129. CTJSCUTA. Calyx 4 5-cleft; cor. 4 5-cleft, subcampanulate, 

 marcescent ; caps. 2-celled, opening all round transversely ; cells 2- 

 seeded. 



B. Corolla 5-petaled, inferior. 



130. HEUCHERA. Calyx 5-cleft ; pet. 5, small, inserted into the mar- 

 gin of the calyx ; caps, birostrate, 2-celled, many-seeded. 



C. Corolla 5-petaled, superior. 



131. PANAX. Polygamous; flowers in a simple umbel; PERFECT; 

 calyx 5-toothed ; pet . 5 ; styles 2 3 ; berry subcordate, 2 3-seeded ; 

 STAMINIF. ; calyx entire. 



D. Flowers incomplete. 



132. CHENOPODIUM. Calyx 5-parted, obtusely pentangular; cor. 

 ; style deeply bifid ; seed lenticular, horizontal, partly covered by 

 the closing calyx. 



133. SALSOLA. Calyx 5-parted; cor. 0; style bifid; seed 1, horizon- 

 tal, covered by the connivent calyx ; embryo cochleate. 



134. ULMUS. Calyx camp^nulate, 4 5-cleft; cor. 0; samara com- 

 pressed, with a broad membranaceous border. 



E. UMBELLIFERjE. 



a. Umbels subcapitate. 



135. SANICULA. Umb. nearly simple, capitate; involucrum few- 

 flowered ; Jlowers polygamous ; calyx 5-parted, persistent ; fruit ob- 

 long, solid, not ribbed, armed with uncinate bristles. 



b. Umbels imperfect. Involucrum obsolete or 0. 

 (Leaves confluent with the petiole, subsimple.) 



136. HYDROCOTYLE. Umbel simple ; fruit with the back and com- 

 missure narrow, laterally compressed, subrotund, 3-ribbed, generally 

 with reticulate veins. 



c. Umbel perfect. Universal involucrum, and sometimes the 

 partial wanting. Fruit ovate, solid, b-costate. 



(Leaves decompound.) 



137. SISON. Fruit ovate, solid, 5-ribbed on the back ; intervals con- 

 vex ; sides contracted ; raphis excavated. 



138. CNIDIUM. Involucrum 1-leaved, or 0; fruit ovate, solid; riba 

 5, acute, somewhat winged ; intervals sulcate, striate. 



d. Umbels perfect. Involucrum generally wanting. Fruit 

 corticate, solid or compressed, utriculate. 



139. SMYRNIUM. Involucrum few-leaved, or 0; fruit solid, ovate; 



