256 



MEMOIRS or THE NEW YORK BOTANICAL GARDEN 



Acacia ampeloclada 



(Fruiting specimen.) Minutely puberulent. Branchlets slen- 

 der, reclining or climlnng, flexuoiis, brown, coarsely angled, 

 armed with pairs of divaricate thorns which are about 1 cm, 

 long, stout, the base vertically elongated and the base decurrent, 

 lightly recurved, shining, very pungent. Petioles 1 to 2 cm. 

 long, about a fifth of the length of the leaf, slender, like the rachis 

 and its branches, grooved above. Pinnae about 12 pairs, about 

 4 or 5 cm. long, the pinnules about 40 pairs on a pinna, sessile, 

 about 4 mm. long, and a fifth as wide, oblong, slightly falcate, 

 truncate at the base, the lower side of which is about 3 times as 

 wide as the upper, the margin ciliate, pale-green on both sides. 

 Fruiting panicle large, much l)ranched, the branches tuberculate 

 or muricate. Pods on a slender, erect-spreading stipe a fifth to 

 a fourth of their own length, about 8 cm. long, nearly 2 cm. wide, 

 oblong, with slightly produced ])ase and very shortly cuspidate 

 summit, strongly flattened, with narrowly thickened margin, 

 glabrous and somewhat shining, the elevated venation coarsely 

 anastomosing, mostly 6-seeded normally, some seeds usually 

 wanting. Seeds in the middle line, about 6 mm. long, obovoid 

 with truncate or depressed summit, brown, shining, on slender 

 funicles. 



Espia, 3,000 feet, H. E. Rmhij, August, 1921 {no. 284). A low 

 tree with trunk a foot in diameter, much branched, the ultimate 

 branches becoming long-climbing vines. 



Caesalpiniaceae 



Bauhinia humilis 



Softly tomentellate, the leaves more or less pubescent. Stems 

 slender, the branchlets elongate, terete. Stipules very small, 

 deltoid, acute. Spines about 2 mm. long and nearly as broad at 

 the base, triangular, laterally compressed, acute, light-brown, 

 mostly a little reflexed. Petioles to 2.5 cm. long (or longer?) 

 rather slender. Blades to 8 cm. long in my specimens, with 

 cordate acute sinus and rounded lobes, the divisions nearly 2 cm. 

 broad, divided about two thirds of their length, the sinus acute, 

 the divisions moderately spreading, lanceolate, nearly equi- 

 lateral, with blunt summit, 5-ribbed, the ribs stout and prominent 

 beneath, the surface nearly glabrous above, tomentellate be- 

 neath. Eacemes (bearing mature fruit only) terminating the 

 branchlets, elongate, slender, the flowers from the axils of di- 

 minutive leaves, the pedicels about 1 cm. long, stout, the calyx 



