198 DICOTYLEDONOUS. 



Genus LVII. CHRYSOGONUM. 



Livolucre 5-\eci\ed, oblong, villous. Ray fiorets plstillater 

 those of the disk staniiimte. Receptacle cliuffy. iSeed en- 

 folded in a 4-leaved calyx. Pappus 1-leaved, pubescent at 

 the summit. 



1. C. ViRGFNiANUM. Stem decumbent, Yillous. Zea yes opposite, oblong, 

 lanceolaie-oval, crenaiely deiitaie, attenuate at the base into a long petiole, 

 villous. Flowers solitary. Invulncre villous. Ray florets 5, broad. Seeds 

 compressed, somevvbat pubescent. 



Yellow. % April — June Common. 4-12 inches. 



(c) Anihemidece, Chamomile, or May-Weedtrihe. 



Genus LVIII. SANTOLINA. 



Involucre hemispherical, imbricate, with the leaves keeled, 

 having scarious points. Ray florets wanting, those of the 

 disk perfet. Receptacle chaffy. Pappus wanting- 



1. S. SuAVEOLENS. >S/fra erect, glabrous^ branched, ieat^cs bipinnatifid ; 

 segments acute, linear. FLuwers in terminal corymbs. Lavender Cotton. 



Yellow. June — July. On the Southern coast. 



Genus LIX. ARTEMISIA. 



Involucre imbricate, with the leaves round, connivant. Ray 

 florets none. Receptacle naked. Pappus none. 



1. A. Caudata. Stem erect, simple, glabrous, paniculately branched. 

 Radicle and lower cauline leaves sub-bipinnate, pubescent, upper ones sub- 

 pinnate; secments sub set:iceous, convex, alternate, divaricate. Flowers 

 erect, pedicillate, globose, in dense panicles. 



Yellow. % July — Aug. On the sea shore. 2-6 feet. 



,Genus LX. SPARGANOPHORUS. 



Involucre imbricate, sub-globose, pubescent, with the leaves 

 recurved at the the summit. Ray florets wanting, those of 

 the disk perfect- Receptacle naked. >SeecZ glabrous, pentan- 

 gular. Pappus membranaceous, 5-cleft. 



1. S. Verticillatus S/ewi pubescent, simple. Leaves linear, glabrous, 

 verticillate, generallay 6 in a whorl Flowers generally terminal and solitary. 

 Involucre with lanceolate, colored leaves. 



Purple. %. July— Aug. Pine barrens. Mid. Car. &. Ga. 10-16 in. 



Genus LXI. ANTHEMIS. 



Involucre hemispherical, many leaved, with leaves nearly 

 equal. Ray florets pistillate ; disk florets perfect. Recepta- 

 ale chaff}', with the chaff" rigid and acuminate. Seed naked. 

 Pappus wanting or none. 



1. A. CoTULA. S««n erect, pubescent, elishtly angled, much branched* 

 Leaves bipinnate, with subulate, 3-parted segments. Flowers in terminal 



