Rajinesque on Cylactis^ Nemopanthus, and Polanisia, 377 



Art. IX. Descriptions of Three New Genera of Plants^ 

 from the State of Nexo-York. Cylactis, Kemopanthus, 

 and Polanisia, hy C. S. Rafinesque. 



1. JV. G. Cylactis. 



V^ALYX campanulated 6 to 10 fidus, sepals a little unequal. 

 Petals 4 to 6 equal. Many perigynous stamens. Pistils 8 to 

 12, ovaries sessile ovate, styles elongated, stigmas capitated. 

 Berries few, distinct, one seeded. 



This new genus belongs in the analytical and natural me- 

 thod, (see Analysis of Nature) to the first natural class Eltro- 

 gynia, first natural order Rhodanthia, second natural family 

 Senticosia, next to the genera Rubus, Oligacis, &c. It would 

 range itself into the artificial class Icosandria of the Linnxan 

 sexual system ; but not properly into any of its orders, since 

 the number of pistils is variable, and never above 12. Only 

 one species belongs to it, which 1 have discovered in company 

 with Mr. Knevels, on the Catskill mountains. The etymology 

 of the name derives from two Greek words meaning radiated 

 calyx. It difiers essentially from Rubus by the unequal many 

 cleft calyx, variable petals, and few pistils. 



Cylactis montana. Mountain cylactis — Stem herbacedus up- 

 right, unarmed, pubescent ; leaves quinate, nearly smooth, 

 upper ones sessile, stipules oblong, folioles ovate acuminate, 

 incised, serrated, ciliated, base acute, entire, the middle one 

 petiolated : flowers few corymbose, peduncles erect elongated 

 bracteolated ; calyx pubescent, sepals lanceolate acute, 

 nerved, reflexed ; petals cuneate-obovate, longer than the 

 calyx. 



It is a small perennial plant, rising about half a foot; flowers 

 white, blossoming in June. On the Catskill mountains near 

 the great falls, &c. 



2. JV. G. Nemopanthus. 



Dioical. M. flowers calyx 5 phylle, equal, deciduous. No 

 c^oroUa. Stamina 5 hypogynous, alternating with the calyx. 



