348 PENNELL: PLANTS OF SOUTHERN UNITED STATES 
Chamaecrista camporum Greene, Pittonia 5: 108. 1903. ‘Type 
specimens collected by myself at Monticello, Illinois, 7 August, 
1899.” Type not seen nor verified, but description evidently 
of this species. 
Cassia Chamaecrista L. (Sp. Pl. 379. 1753. ‘‘ Habitat im 
Jamaica, Barbados, Virginia’’) is composite, and should be typified 
by ‘‘Chamae Crista pavonis americana, siliqua multiplici,’”’ Breyn. 
Cent. 66: Al. 24, from Curacao. This is the species usually known 
as Cassia diffusa DC.., anally of C. nictitans L. The Linnaean diag- 
noses, here, in Hort. Ups. 1o1, 1748, and in Hort. Cliff. 158, 1737, 
will apply to this, the phrase “glandula petioli pedicellata”’ di- 
rectly excluding our plant. : 
Annual. Stem erect, 3-9 dm. tall, much branched, puberulent 
in lines with ascending incurved hairs. Stipules linear-attenuate, 
glabrous or nearly so, ciliate, many-nerved, 5-10 mm. long. 
Petioles 5-8 mm. long, puberulent with incurved hairs. Petiolar 
gland single, near middle or toward distal end of petiole, sessile 
or nearly so, depressed saucer-shaped, round or slightly oval, 
0.5-1.5 mm. wide, dark brown to brown. Leaflets six to twelve 
(or fifteen) pairs, 10-20 mm. long, 2-5 mm. wide, oblong-linear, 
obtuse to acute, shortly mucronulate to mucronate, glabrous 
(rarely very finely puberulent), finely ciliolate, paler beneath, 
evidently nerved. Bracteoles 3-5 mm. long, linear-attenuate. 
Pedicels one to six ina fascicle, 1o-20 mm. long, finely or sparsely 
puberulent with incurved (rarely somewhat spreading, then short) 
hairs. Sepals 9-12 mm. long, lanceolate-acuminate, more or less 
pubescent on the midrib. Petals 10-17 mm. long, anterior slightly 
exceeding laterals. Stamens ten, unequal, two longer; anthers 8-10 
mm. long, yellow or reddish (especially southwestward). Legumes 
4-5 cm. long, 5-5.5 mm. wide, appressed-puberulent or glabrate 
on the sides, with a beak usually short but reaching 1. 5 mm. long. 
Seeds six to fifteen, 3—3.2 mm. long. 
Moist to dry, usually sandy, open places, southeastern Massa- 
chusetts to Florida and central Texas, inland to northern Ohio, 
southern Minnesota and central Kansas. Abundant in many. 
parts of the southeast, especially in the Atlantic Coastal Plain. 
Northeast of Virginia, rare above the Fall Line, on the Serpentine 
and occasionally elsewhere in southeastern Pennsylvania. 
Variable, and doubtless hybridizes with allied species. South- 
eastward probably passes into the little-known variety y~ south- 
ward through the lower Alleghenies and the lower Mississippi 
valley passes into the very pronounced variety 8. 
