196 SYNGBNESIA. JE^rAIilS. 



This extensive genus of near 80 species is almost peru- 

 liarly American, extending beyond the tropics asfaras 

 Peru and Paraguay. In Europe there is but a single spe- 

 cies with 3-parted leaves, 1 in China, 2 in Japan, 3 at the 

 Cape of Good Hope, 1 in Guinea, another at Mozambi- 

 que, 1 in Syria, and 2 of doubtful genus in Australasia. 



543. MIKANIA. Willdenow. 



Calix 4 or 6-Ieaved, equal, 4 or 6-flowerc(k 

 JReceptacle naked. Pappus pilose. 



A genus scarcely distinct from Eupatoritim. Stems twi*. 

 ning or erect. Leaves opposite, ovate, cordate or hastate j 

 flowers corymbose or spiked, corymbs paniculate, axillary, 

 or terminal. Flower and seed as in Eupatovium. 



Species. 1. M. scandetis. Flowers in some plants 

 fragrant. 2- * pubescens. Stem twining pubescent, leaves 

 cordate and acummate, angularly toothed, and on either 

 side, as well as the calix, pubescent, lobes divaricate, 

 equal. Hab. In Carolina and Georgia. Flowers pale pur* 

 pie, odorous. Very nearly allied to the preceding. 



A genus of 15 species, principally indigenous to the tro- 

 pical regions of America, there is also 1 species in India, 

 1 in ihe Isle of Bourbon, 1 at Sierra Leotie, and another at 

 the Cape of Good Hope. 



544. CHRYSOCOMA. L, (Goldy-locks.) 

 Calix imbricated, oblong or hemisphericar. 



Style scarcely exsprted. Beceptade naked. Pap- 

 pus pilose, scabrous, rays crowded and unequal. 

 Seed pubescent. 



Shnibby or herbaceous; leaves alternate and entire, of- 

 ten narrow; flowers mostly corymbose and terminal, jel- 

 low, rarely purple; calix 3 or 4, 5, or more than 20-flow- 

 ered, in C. IJnosyris, &c. hemispherical, in all the North 

 American species oblong, small, and attenuated at the 

 base, the scales are likewise rigid and carinate. Notwith- 

 .standing this diversity of aspect, the genus appears to be 

 perfectly natural, and presents gradations from one ex- 

 treme to the other. 



Species. 1. C. * graveolens. Shrubby; leaves linear, 3- 

 nerved, smooth and impunctate; branches whitish, pul- 

 verulently tomentose; flowers corymbosely fastigiate and 

 crowded; calix angular and smooth, 5-flowered. Hab. 

 On the banks of tlie Missouri in denudated soils; common 



