516 
branched; stems obscurely strigose-pubescent; leaflets 6 to 10 
pairs, linear-elliptical, glabrous, 9 mm. long, 2 to 3 mm. broad, 
with the excentric midrib of C. Chamaecrista ; petiolar gland small, 
circular, sessile, depressed; flowers solitary on filiform mostly 
supra-axillary peduncles; petals large, obovate, much exceeding 
the sepals, 11%4 cm. long, 1% cm. broad; sepals linear, scarious, 
strongly ciliate; legume not observed. (Plate 251.) 
Low pine woods, River Junction, Gadsden_Co., Florida. G. 
V. Nash, September 5, 1895 (no. 2571). 
Potosi, Missouri. F. Pech. 
The difference between this and C. Chamaecrista lies mainly in 
its aspect, but the leaflets are smaller and less numerous and the 
flowers are relatively much larger. The flowering period, more- 
over, is from two to three months later than in that species. 
Cassia Mississippiensts Pollard, Bull. Torr. Club, 21: 219. 
1894. 
This plant has not yet been collected, so far as I am aware, 
outside of the State from which it was first described. Professor 
S. M. Tracy, of the Mississippi Agricultural Experiment Station, 
wrote me that he had four acres covered with a dense growth of 
the species ; from which J infer that it is locally as troublesome a 
weed as C. nictitans. 
Cassia Simpsoni Pollard, Bull. Torr. Club, 21: 221. 1894. 
Apparently a subtropical type, confined in the United States 
to the Keys of Florida, but probably growing in Cuba. It may 
_ be considered, in fact, the West Indian representative of the 
Texano-Mexican species C. procumbens L. The originalspecimens, 
collected by Mr. J. H. Simpson, on No Name Key, are in the 
possession of the National Herbarium. I have detected it in no 
other collection thus far examined. 
Explanation of Plate 252. 
Fig. 1. Cassia nictitans L. 
Fig. 2. Cassia aspera Muhl. 
Fig. 3. Cassia multipinnata Pollard, n. sp. 
Fig. 4. Cassia Simpsoni Pollard. 
Fig. 5. Cassia Chamaecrista L. 
Fig. 6. Cassia depressa Pollard, n. sp. 
Fig. 7. Cassia Mississippiensis Pollard. 
Fig. 8. Cassia procumbens L. 
