28 
Piptadenia communis Benth. in Hook. Lond. Jour. Bot. 4: 337. 
Guanai, Apr.-June, 1892 (1361) = Rusby's 1307. 
Mimosa Soratensis Benth. Trans. Linn. Soc.30: 427. Vic. Sorata, 
May, 1892 (1317, = Rusby’s 1299. 
Mimosa rufescens Benth. in Mart. Fl. Bras. 15: 362. Guanai, 
Apr.—June, 1892 (1505) — Rusby's 1304. 
Mimosa albida Kunth, Mim. pl. r. Guanai, Apr.-June, 1892 (1435) 
= Rusby's 1297. 
Acacia Bonariensis Gill. in Hook. Bot. Misc. 3: (1833) 207. Espir- 
ito Santo, 1891 (1168). 
Acacia riparia H.B.K. Nov. Gen. 4: 276. Between Tipuani and 
Guanai, Dec., 1892 (1671). 
ACACIA MicHELII sp. n. 
and flexuously branched, the branchlets stout, reddish- 
WWE striate and finely tuberculate, the internodes 1.5-2 cm 
long; spines recurved-spreading, 2-4 cm. long, slender, very 
pungent, bluntly keeled, the older whitish and minutely black- 
dotted, the younger light-brown; leaves mostly petioled, 5—6- 
jugate, 3-5 cm. long, 2—3 cm. broad, the pinnae sub-sessile, 15-20- 
jugate, the Voie sessile, 4-5 mm. lon ng,.5-I mm. broad, oblong, 
with sub-cordate base and rounded apex, pale, thickish, glabrous, 
the veins very obscure; peduncles yr erect, slender, rye 
cm. long; heads lobose. Fruit a 
een blunt, ead flattened, lightly constricted between pe 
5 or e 
Vic. Coaituinba, 1891 (1095). Near A. constricta, 
Calliandra Boliviana Britton, Bull. Torr. Bot. Club, 16: 327. Da 
nai, July, 1892 — Rusby's 1314 and 1315. 
CALLIANDRA INAEQUILATERA Sp. n. 
Branchlets slender, light gray-brown, striate, the younger pu- 
berulent, the internodes 3-4 cm. long; stipules indurated, 5 mm. 
long, ovate, abruptly canned near the middle and tapering 
above, obtuse or acutish, strongly many-nerved; common petioles 
. bro 
the upper larger, lance-ovate, inequilateral and falcate, the base 
rounded or subcordate, the apex obtuse and cuspidulate ; entire, 
revolute, coriaceous, deep green, above glabrous and shining, 
underneath pubescent on the veins, 2-nerved, strongly reticulate ; 
peduncles solitary in the axils, scarcely half the length of the 
leaves ; heads 4 or 5 cm.in diameter when in full bloom, scarlet or 
