492 PATAGONIAN EXPEDITIONS I BOTANY. 



CASSIA APHYLLA DIVARICATA. 



N. Patagon., by Rio Negro. 



2. C. ARNOTTIANA Gill. & Hook. 



Fruticose, small, glabrous, naked below. Leaflets 4-5 pairs, thickish, 

 glaucous, cuneate-obovate, retuse ; a subulate gland between the lowest 

 pair. Raceme twice as long as the leaves, 2-3-flowered. Legiime ob- 

 long, coriaceous, thick, compressed. Sutures tumid. 



(Chili) ; N. Patagon., by Lago Nahuel-huapi. 



3. C. GLAUCA Lam. 



Shrub, about 1.5 meters high. Leaflets 4-6-pairs, oval, acutish, 

 glaucous, an oblong, sessile gland between the 3 lowest pairs. Stipules 

 linear, subulate, spreading. Legumes linear, straight, mucronate. 



(East Indies) ; Patagonia (?). 



4. C. LORENTZII Nied. 



Shrub 30-100 cm. high, erect, glabrous, naked below, scarred, branches 

 and branchlets reticulate, green when young, becoming olive. Leaflets 

 3-5 pairs, opposite, thickish, broad-ovate, retuse, or with nerve produced ; 

 entire, subsessile, green ; a subulate gland between the lowest pair. 

 Stiptdes lanceolate, acutish. Racemes twice as long as the leaf, 2-5- 

 flowered. Legtime sessile, oblong, coriaceous, thick, compressed, with 

 tumid sutures 60 mm. long, gray-fuscous. Seeds numerous, mostly hori- 

 zontal, suborbicular, compressed, with prominent brown hilum. 



N. Patagon., by Rio Negro. 



4. POINCIANA Linn. 



Trees, having bipinnate leaves, with many small leaflets and terminal 

 racemes of orange or red flowers. Calyx-tube short or obsolete, segments 

 valvate, subequal. Petals orbicular, subequal, or the posterior differing. 

 Stamens 10, free, hairy at base, inflexed above. Ovary sessile, many- 

 ovulate ; the stigma truncate, ciliolate. Legume elongate, internally con- 

 stricted between the seeds. Seeds transverse, oblong, having endosperm ; 

 radicle exserted. 



