2. nuda. . Leaves eae snasfhncalis te pinnaet 
fid, segments obtuse, capsule naked, valves 3, seeds m: 
ginated; exterior stamina petaloid often “ae 
Near the Great Bend of the Missouri,on grat 
parently perennial, at least often exis 
gem secite character ex: 
nearer a proach towards Mentzelia by the external Pen. 
taloid filaments. ~ = 
The genus Bartonia one of the most-singular and splen- 
did in Pscac hadeapa: appears to be distinctly concate- 
nated with Loasa and. std sepa but approaches nearer to 
the latter than the former, indeec tially se- 
parates it from this genus, excep ‘the augmenition of pe- 
tals and the structure of the capsule and seeds, but these 
exceptions onthe other hand approximate it to Leasa, 
- from which:iteis essentially distinguished by the absence 
of lepanthia or internal heteromorphous petals, b 
connected disposition of the stamina which are 
merous, and also by the inferior position of the g rm fom 
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 
better employed than in occasionally contemplatin anos 
demonstrating this-vast and infinite » in whic’ 
even : ourselves are subservient,—a mysterio’ ut 
tenation, + ree gin ‘ot 
" ealize's-cleft, aor, deciduous. - Petals 4 
ferior, 1-celled, cylindric, 3 to 6 seed- 
nit flat, 3-valved. Seeds obtong, Pate. 
ig 
2 sof herbaceous and asperate a clothed aa 
arbe hairs; leaves alternate more or less ovate os: 
