OF ARTS AND SCIENCES. 165 
XII. 
CONTRIBUTION FROM THE GRAY HERBARIUM OF 
RVARD UNIVERSITY. /¥, §, ZT, 
DESCRIPTIONS OF NEW PLANTS COLLECTED IN MEX- 
ICO BY C. G. PRINGLE IN 1890 AND 1891, WITH 
NOTES UPON A FEW OTHER SPECIES. 
By B. L. Rosinson. 
PE 
Presented by George Lincoln Goodale, June 15, 1892. 
Cieome Porosina. Herbaceous, two feet high: stem purplish, 
striate, moderately branched, minutely glandular-pubescent, armed 
at the nodes with pairs of small stipular spines: leaves trifoliate; 
petioles minutely but densely glandular-pubescent, 1-14 inches in 
length; leaflets ovate-lanceolate or narrowly rhombic; mostly acute 
or acuminate at the apex, acute at the base, puberulent under a 
lens and minutely ciliate, 1-14 inches long, 5-8 lines broad: floral 
leaves numerous, simple, lanceolate or ovate-lanceolate, subsessile, 
4-6 lines in length: peduncles slightly puberulent or smooth, 
about 9 lines long: sepals linear-subulate, acute, reflexed during — 
anthesis: petals spatulate, white, 5 lines in length, the blade 
about equalling the slender claw: stamens variable, sometimes 
very unequal in the same flower, some or all of them much exceed- 
ing the petals: stipe of the ovary 6-10 lines long; capsule linear, 
pointed at each end, moderately curved, smooth, but with a fine 
longitudinal striation, 1}-1} inches in length, 14-2 lines in thick- as 
ness: seeds striate and muricate.— Tamasopo Cafion, San Luis Po- 
tosi, June, 1890 (n. 3538). Near the South American C. diffusa, 
+» but distinguished by the long stipe of the ovary, slender- 
clawed petals, long stamens, and longer linear pods. It is also 
near C. aculeata, L., but is amply distinguished by its jong etines 
ovary and much ES: stamens. 
VioLa REPTANS. Rhizome short, bearing long fibrous pookes = z 
stems numerous, glabrous, prostrate, 6-10 inches long, rooting at 
the nodes: radical leaves broadly ovate, suborbicular, obtuse or 
Reescns at the apex, cordate, regularly cnenake-sertetts anne: *, 
