Pollard. — New American Species of CJiamaecrista. 21 



sepals; legume densely pubescent, not at all falcate, 4-5 cm. long; seeds 

 quadrate, compressed, dark brown. 



Type, No. 371,572 in the United States National Herbarium, collected 

 by Prof. S. M. Tracy and Prof. F. E. Lloyd on Breton Island, La., 

 August 17, 1900 (No. 198). I consider that No. 155 of the same collec- 

 tors from Biloxi, Miss., September 4, 1900, No. 3,953, S. M. Tracy, 

 Biloxi August 30, 1897, and No. 1,423 of my first distribution of Missis- 

 sippi plants (Biloxi, September 1.5, 1896) are all referable to this species. 

 The last cited specimen was distributed as Cassia depressa Pollard, a 

 species with which littoralis has heretofore been confused. The type of 

 depressa, (which Professor Greene has now identified with the Cassia 

 chamaecristoides of Colladon) is a plant of low spreading habit, exhibit- 

 ing little or no pubescence, with scattered, very narrow leaflets, and 

 much compressed glands. C. littoralis varies somewhat in the number 

 of its leaflets, but they are always compact or crowded, and never 

 scattered on the rachis. It is, moreover, a distinctly maritime species, 

 the numei'ous stations from which I have material being all situated on 

 the coast or on outljnng islands in the Gulf of Mexico. The prominently 

 apiculate leaflets serve to distinguish it from C. fasciculata and C. de- 

 vressa. 



Chamaecrista tracyi. 



Plant erect, herbaceous, freely branching, the branches inclined to be 

 lax and spreading; stems and foliage densely clothed with a slightly 

 glandular pubescence; leaves 4-9-foliolate, 2-3 cm. long, the leaflets 

 oblong or elliptical, very small (5-8 mm. long); petiolar gland cupuli- 

 form, sessile near the base of the rachis; stipules setaceous; flowers 

 solitary, on slender axillary or supra-axillary peduncles as long as the 

 leaves or longer, upcurved in fruit; corolla 1-1.5 cm. wide; sepals nar- 

 rowly linear, acuminate, about equaling the petals; legumes pubescent 

 4 cm. long, rather markedly rostrate; mature seeds not observed. 



Type in the United States National Herbarium, collected by Prof. S. M. 

 Tracy at Koshtaw, Miss., September 15, 1898. In appearance this plant 

 forms a link between the large-flowered and the small-flowered sections 

 of the genus; it is chiefly conspicuous, however, for the long-pedunculate 

 flowers approaching in size those of certain West Indian species, but not 

 at all like any species within our own borders. The cupuliform gland, 

 moreover, resembles the gland found in members of the sub-genus Nicti- 

 tella. The leaflets are very small, and quite constant in dimensions. 



In dedicating this species, in many respects the most interesting in 

 the genus, to Professor Tracy, I wish to record my very great obligations 

 to him and to Prof. F. S. Earle, now of the New York Botanical Garden, 

 for the material they have so generously placed at my disposal from 

 time to time. 



