ICOSANDRIA MONOGYNIA. 299 



2. 7inda. Leaves sublanceolale, interruptedly pinnatl- 

 «a,se.?ments obtuse, capsule naked, valves 5, seeds mar- 

 ginated; exterior stamina petaloid often sterile Har 

 Near the Great Bend of the Missouri, on gravelh hills an" 

 parently perennial, at least often existing 3 o'r 4 years 

 ^^ITl °T i-emaining vestig-es. Obs. Possessing all 

 the habits ot the preceding, the specific character ex- 

 cepted. Obs. Leaves subcanescenlly hirsute, asperate, 

 pubescence short and appressed, hairs subulate and dia- 

 phanous, (tlirough a common lens) repeatedly barbed from 

 the point to vhe base, after the manner of this and the 

 tollovnng genus; but never glandulous. Flowers smaller 

 than the preceding, of the same color, and making- a 

 nearer approach towards MeiitzeUa by the external pe- 

 taloid hlaments. * 



Ti>e genus Hartonia one of the most singular and splen- 

 did in North America, appears to be distinctly concate- 

 lUted with Zoflsa and Mentzelia, but approaches nearer to 

 the latter ihan the former, indeed nothing essentially se- 

 parates It from this genus, except the augmention of pe- 

 tals and the structure of the capsule and seeds, but these 

 exceptions on the other hand approximate it to Loasa, 

 Irom which it is essentially distinguished by the absence 

 ot iepanthia or mternal ).eiercmorphous petals, by the un- 

 connected disposition of the stamina which are more nu- 

 merous, and also by t^e inierior po&kion of the germ and 

 the perfect flatness of the converging valves of the calix. 

 —•We have here for our reflection an additional proof of 

 the wonderful harmony of Nature, and a recommenda- 

 tion to the philosophical study of natural affinities.— Can 

 we be better employed than in occasionally contemplating 

 and demonstrating this vast and infinite chain, in which 

 even we ourselves are subservient,— a mysterious but 

 sublime concatenation, to us without beginning and with- 

 out end! 



S27. MENTZELIA. Flumicr, L. 



CaZijc 5-cleft, superior, deciduous. Petals 5. 

 Capsule inferior, 1-celled, cylindric, 5 to 6 seed- 

 ed, summit flat, 3-valved. Seeds oblong, part- 

 iy angular, longitudinally arranged. 



A genus of herbaceous and asperate plants clothed with 

 multibarbe hairs; leaves alternate more or less ovate and 



tic researches made at the most imminent risk of pcrsojial 

 safety! 



