syngenesia. polyg. necess. Polymnia. 645, 



e 



957. POLYMNIA. Receptacle chafFy, Pappus 

 none. Exteriour CaL 4 or 5-leaved : 

 the interiour 10 -leaved with leaflets 

 concave. {Tetragonotbeca 976.) 



canadenjls. I. P. leaves alternate halbert-finuous. Canadian: 



Uvedalia. 2, P. leaves oppofite halbert-finuous. 

 Tetragono- P. leaves oppofite fpatuled rather tooth'd. 



theca, 

 Wedelia. P. leaves lanced, ftem fhrubby. 



abyjjinica. P. leaves oppofite lanced feffile. S. abyjfinlan. 



fpinofa. P. fhrubby erect, leaves egg-hearted, oppofite feffile, 



prickles fupeiaxillary, calyxes intire, S. thorny, 



carnofa. P. fhrubby decumbent, leaves alternate oblong ftefhy, 



calyxes favv'd. S. fi e ft>y* 



988. CHRYSOGONUM. Receptacle chafFy. Pap- 



pus 1 -leaved, 3-tooth'd. CaL 5-leav- 

 ed. Seeds involved in a 4 -leaved 

 calycle. 



Virginian- 1. C. petioles larger than the leaf. Virginian, 



um. 



989. MELAMPODIUM. Receptacle chaffy, conic. 



Pappus 1 -leaved. CaL 5-kaved. 



americana. 1. M. ftem erect, leaves fublinear one-tooth'd on both 



fides. american. 



auftrale. 2. M. ftem decumbent, leaves egg'd faw'd. fouthern. 



990. CALENDULA. Receptacle naked. Pappus 



none. CaL many-leaved, equal. Seeds 

 of the Difk membranous. Mari- 

 gold. 



arvenfes. 1. C. feeds boat- form murrex'd incurved : the outmoft 



ones erect protruded. field. 



fantla. 2. C. feeds pitcher'd in verfe-egg'd polifh'd, calyxes fub- 



murex'd. holy, 



F f 2 3. C. 



