17j2 STNGENESIA. SUPERrttJA. 



A genus of near 50 species, almost exclusively indige- 

 nous to Europe and the Levant. 



581. TETRAG0N01HECA. VHeritier. 

 Catix 1 leaved, 4-sided, 4-paiied, very broad. 



Secepfacle paleaceous. Pappus none. 



Herbaceous; leaves opposite, entire; peduncles 1-flow- 

 ered, dichotomal and terminal. 



Species. l.T. /telianthohles. Hab. In the pine woods 

 of Virginia, Carolina, and Georgia. Stem 2 to 3 feet high. 

 Flowers yellow. — The only species of the genus, allied to 

 J^oli'nmia. 



582. HELIOPSIS. VEeritier. 



Calix imbricated, scales subovate, lined. RayS 

 lar2;e and linear. i2ecf/}/ade paleaceous, conic, 

 palffia lanceolate. Seeds 4-sided, Pappus none. 



Herbaceous; leaves opposite, ovate, 3-nerved; peduncles 

 l-flo\vered, dichotomal and terminal. Calix nearly simple. 



Speoies. 1. H. Icevis. Hab. From New York to Flori- 

 da; often near fences, thriving by exposure. Flowers 

 golden yellow. — The only species of the genus? 



583. BUPHTHALMUM. i. 



Calix foliaceous. Receptacle paleaceous. Pap- 

 pus 4-toothed, or an obsolete margin. Angles 

 of the seefZ partly marginated, particularly those 

 of the ray. 



Shrubby or herbaceous; leaves entire, opposite and al- 

 ternate; flowers mostly terminal. 



Species. 1. B. frvteacens. On the sea-coast of Carolina 

 and Florida. Angles of the seed 3 or 4, acute, summit 

 suberose, obsoletely toothed, surface granulated and 

 somewhat scabrous. Chaff of the receptacle rigid, cari- 

 nated and cuspidate in the fruit, squarrose. 2. an^fustifoliiun. 

 Herb Banks, mss. ^. sagittatum.Vii. 'Hoi m livphthahmm}? 



A genus of more than 20 species indigenous to Ame- 

 rica as far as Paraguay, Europe, the Levant, Egypt, Ara- 

 bia, China and the Cape of Good Hope. A group proba- 

 bly not very natural. 



