CAESALPINIACEAE 179 



11. Pmnus FaduB L. Locally escaped in eastern N. Am. Native of 

 Eu. — Pennsylvania : Ai<i<EGheny, Pittsburg. 



12. Pmnus aerotlna Ehrh. Wild Black Chbrry. (Man. p. 526; 

 I. F. J. 2026.) In woods or open places, Ont. to Fla., S. Dak. and Tex. 

 — Pennsylvania : Pike ; Monroe ; Bucks ; Delaware ; Chester ; 

 Lancaster ; Centre ; Cambria ; Franklin ; Allegheny. 



2. AMYGDALUS L. 

 1. Amygdalus Fersica L. Peach. (Man. p. 526; I. F./. 2027.) Es- 

 caped from cult., N. Y. to Ga. — Pennsylvania: Delaware ; Lancaster, 

 and generally throughout the State. 



Family 14- CAESALPINIACEAE Kl. & Garcke. Senna Family. 



Corolla apparently papilionaceous, but with the unpaired petal embraced by 



the wings; leaves with i-foliolate blades. i. Cercis. 



Corolla [more or less irregular, often nearly regular : leaves with pinnately 

 compound blades. 

 Leaves with simply pinnate blades. 2. Cassia. 



Leaves with 2-pinnate blades. 

 Flower with a short receptacle : stamens surpassing the petals. 



3. Gleditsia. 

 Flower with a long receptacle : stamens shorter than the petals. 



4. Gymnocladus. 



1. CERCIS L. 



1. Cercis Canadensis L. Red-bud. American Judas-tree. (Man. 

 p. 529; I. F. f. 2033.) In rich soil, Ont. to Minn., N. J., Fla. and 

 Tex. — Pennsylvania : Delaware ; Chester ; Lancaster ; Dauphin ; 

 Franklin ; Huntingdon ; Blair ; Allegheny. 



2. CASSIA L. 



Corolla very irregular : calyx-lobes acuminate. 

 Corolla less than i cm. wide : one petal much larger than the other four. 



I. C. niclitans. 

 Corolla over i cm. wide ; petals moderately unequal. \t. C. Chamaecrisla. 

 Corolla essentially regular, the five petals nearly equal : calyx-lobes obtuse. 

 Petiolar gland between the lower pair of leaflets : leaflets 4-6, the blades 



obovate. 3. C. Tora. 



Petiolar gland at the base of the rachis : leaflets 12-20, the blades elliptic or 

 oblong. 4. C. Marylandica. 



1. Cassia nictltans L. Wild SensiTive-Plant. (Man. p. 529 ; I. 

 F.y. 203^. ) In dry soil. Me. to Ga., west to Ind., Kans. and Tex. — Penn- 

 sylvania : Northampton ; Bucks ; Delaware ; Chester ; Lancaster; 

 York ; Franklin ; Luzerne ; Huntingdon ; Allegheny. 



2. Cassia Chamaecrista L. Large-elowerEd Sensitive Pea. 

 (Man. p. 529 ; I. F._/ 203J.) In dry soil, range of the preceding species, 

 but extending further viest.— Pennsylvania : BUCKS; DELAWARE; 

 Chester ; Monroe; Lancaster ; York ; Perry ; Franklin ; Alle- 

 gheny. 



