e 
MR. G. BENTHAM—-REVISION OF THE GENUS CASSIA. 513 
As a general result, we may observe that the genus Cassia appears to have its great 
centre in tropical America, especially luxuriating in diversity of forms in the rocky 
ridges of Central Brazil, becoming more rare in the more temperate regions of North 
and South America, and unknown in the cooler Andine elevations—more sparingly domi- 
ciled in Australia and Africa, although still with a considerable degree of idiosyncrasy, 
but represented only by very few species in Asia, and that without any very special type, 
except, perhaps, that of the Plane (C. auriculata). 
Proceeding to the Enumeration of the species, 1 would refer for the generic character 
to Benth. et Hook. Gen. Pl. i. 571; but for its subdivision the detailed examination of 
species has induced me to modify the sections as follows :— 
Subgenus vel Sectio I. EıstuLa. Staminum 3 inferiorum filamenta longa arcuata, 
antheræ rimis dehiscentes; superiorum 7 filamenta brevia, antherw poris basalibus de- 
hiscentes, v. summæ 1-3 imperfecte. Legumen longum, teres v. crasso-compressum, 
durum, indehiscens. Semina horizontalia, transversa. Species 1-20. 
Subgenus II. SENNA. Antheræ perfectæ 7 v. 10 apice poro simplici v. duplici, rarius 
rimis brevibus dehiscentes. Legumen teres v. compressum, sutura una v. utraque de- 
hiscente valvulis haud elasticis, v. rarius indehiscens. Seminum funiculus filiformis. 
Species 21—183. 
Sectio 2. CuamzristuLa. Legumen teres turgidum v. leviter compressum. Semina transversa, hori- 
zontalia. Folia interglandulosa v. eglandulosa. Species 21-64. 
Sectio 3. OncoLoBIUM.- Legumen inter illa € et Chamesenne varians. Semina trans- 
versa v. obliqua. Folia basiglandulosa. Species 65-75. y 
Sectio 4. Prososperma. Legumen subteres tetragonum v. articulato-compressum, sepius angustum. 
Semina longitudinalia. Folia interglandulosa. Species 76-89. 
Sectio 5. CHAMwJssENNA. Legumen compressum, sæpius planum. Semina transversa v. obliqua, verti- 
caliter compressa. Folia interglandulosa v. eglandulosa. Species 90-163. 
Sectio 6. Psırorueema. Antheræ perfecte 10 (in precedentibus 7). Legumen Chamesenne. Fo- 
liorum glandulæ variæ. Species 164-183. 
Subgenus III. LASIORHEGMA. Antheræ perfectæ 10 v. abortu pauciores, rimis bre- 
vibus terminalibus raro ad latera decurrentibus dehiscentes, suturis lateralibus sæpius 
villoso-barbatis. Legumen elastice bivalve. Seminum funiculus brevissimus. Species 
184—338. 
Sectio 7. Apoucourra. Arbores. 
184-186. 
Sectio 8. Asus. 
seepissime viscosi. Species 187-259. 
Sectio 9. Caamæcrisra. Herbæ fruticesve. Pedicelli solitarii v. pedunculo communi brevissimo sub- 
faseiculati, axillares v. supraaxillares. Species 260-338. 
Racemi breves e ramis annotinis vetustioribusve oriundi. Species 
Herbæ fruticesve. Racemi terminales interdumque etiam in axillis superioribus, 
Subgenus vel Sectio I. FisruLa, DC. 
Genus Bactyrilobium, Willd.; Cathartocarpus, Pers. 
Arbores v. rarius frutices elati. Glandulæ petiolares nulle. Racemi pluri- v. multi- 
flori e ramulis annotinis v. vetustioribus oriundi, v. ad basin innovationum axillares v. 
terminales simplicesque. Sepala obtusa. Stamina 3 inferiora filamentis elongatis arcuatis 
| VOL. XXVII. at. 
