398 ON SEEDLINGS 



have come under my notice are Hymenaea Courbaril (fig. 305) 

 and Peltogyne sp., having plano-convex, fleshy, erect, oblong, 

 and emarginate cotyledons, with auricles at the base clasping 

 the stem. Cotyledons possessing the last-named character are 

 met with amongst the Acacias. The leaves in Hymenaea 

 Courbaril are compound, and consist of one pair of leaflets. 

 Those of the first leaf are suborbicular, emarginate, exstipulate,. 

 and sessile, owing to the adhesion of the petiole to the stenV 

 giving them the appearance of simple, opposite leaves ; but 

 they are both inserted towards one side of the stem. The 

 second leaf is stipulate with a pair of obliquely-ovate leaflets, 

 while the adult one has obliquely-oblong or falcate leaflets. 

 The first two leaves of Peltogyne are opposite and abruptly 

 pinnate, with three pairs of lanceolate leaflets and the midrib 

 prolonged between them. 



Tribe Cynometrea. The cotyledons of Copaifera officinalis 

 are very similar to those of Hymenaea Courbaril. The leaves 

 are abruptly pinnate, coriaceous, glabrous, evergreen and full 

 of pellucid dots, and penninerved, with short, stout, cylin- 

 drical petioles. The first leaf has three pairs of lanceolate, 

 falcate leaflets, oblique on the posterior and more or less cut 

 away on the anterior side at the base, especially the upper- 

 most pair. Succeeding leaves have more numerous leaflets. 



SUBORDER MIMOSE.E. 



Tribe Adenantherce. The cotyledons of Adsnanthera Pavo- 

 nina (fig. 306) are broadly obovate, sessile, erect, fleshy, 

 auricled at the base, and in this respect resemble those of the 

 two above-mentioned species. The leaves are alternate except 

 the first pair, which are opposite and abruptly pinnate, with 

 numerous alternate leaflets. The leaves of the adult are 

 large, and abruptly bipinnate with three to four pairs of 

 pinnae. The cotyledons bear small buds in their axils. Those 

 of Prosopis juliflora are broadly oblong, subsessile, and cadu- 

 cous. The first leaf is abruptly pinnate, with four pairs of 

 small, oblong leaflets like those of an Acacia. The second to 

 the seventh leaves inclusive are abruptly bipinnate, with 

 numerous small 'leaflets, and the midrib generally prolonged 

 as a small bristle beyond the pinnae. The cotyledons of 



