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218 . PENTANDRIA. 



(3) Flowers of 5 petals, beneath. 



[Staphylea pinnata.] 



(4) Flowers of 5 petals ^mostly of '2 seeds. Umbelliferous. 



A. Involucrum general, and partial. 



ERYNG'IUM. Flowers forming a head : Recept. chaffy. 

 HYDROCOTYLE, Fkiuers in a sort of umbel ; fertile; 



Seeds compressed. 



SANIC'ULA. Flowers in a sort of umbel; central ones 



barren : Seeds prickly. 



HERACLE'UM. Flowers radiate; some barren: Invol 



deciduous: Seeds membranaceous. 



CENANTHE. Flowers radiate; outer ones barren: Invol* 



simple ; Seeds crowned, sitting. 



ECHINO'PHORA. Flowers radiate; some barren : Invol. 



simple : Seeds sitting. 



CAU'CALIS. Flowers radiate; central ones barren: Invol* 



.simple; Seeds prickly. 



DAU'CUS. Flowers radiate; central ones barren; Invol 



winged : Seed rough with hairs. 



TORDY'LIUM. Flowers radiate; all fertile; Invol. sim- 

 ple : Seeds scolloped at the edge. 



PEUCE'DANUM. Flowers uniform ; central ones barren: 



Invol. simple: Seeds depressed; scored. 



CO'NIUM. Flowers uniform; all fertile: Partial Invol 



extending but half way round : Petals heart-shaped: 

 Seeds bulging; ribbed and furrowed* 



BU'NIUM. Flowers uniform; all fertile: Partial Invol 



like bristles : Petals heart-shaped. 



ATHAMANTA. Flowers uniform; all fertile: Petals 



heart-shaped: Seeds convex; scored. 



BUPLEU'RUM. Floivers uniform; all fertile: Partial 



InvoL resembling petal : Petals rolled inwards. 



SI'UM. Flowers uniform; all fertile: Petals heart-shaped: 

 . Seeds nearly egg-shaped ; scored. 



SELI'NUM. Flowers uniform; all fertile : Petals heart- 

 shaped: Seeds fat; scored. 



CRITJFMUM. Flowers uniform; all fertile : Invol. hori 



zontal : Petals flattish. 



* 



