PITTIER—PLANTS FROM COLOMBIA AND CENTRAL AMERICA. ATT 
Type in the John Donnell Smith Herbarium, collected near Cobin, Alta Vera- 
paz, Guatemala, in flower, August, 1906, by H. von Tiireckheim (no. II. 1401). 
Placed by Captain Smith in the section Reticulata, but evidently a species 
of the Oblonga group, near M. purpurascens Pittier, from which it differs by 
the larger flowers and the pubescence, and in other minor characters. 
13. Machaerium setulosum Pittier, sp. nov. 
An armed scandent shrub; branchlets terete, striate, glabrous or more or less 
villous or pubescent. 
Leaves 31 to 49-foliolate, the rachis 12 to 24 cm. long, tapering from the base, 
more or less villous or puberulous; leaflets subcoriaceous, the petiolules red- 
dish, pubescent, 0.5 to 1.5 mm. long, the blades oblong, slightly inequilateral, 
rounded at the base, rounded and more or less emarginate at the apex, 2.5 to 
4 cm. Jong, 7 to 13 mm. broad, minutely pubescent, villosulous or glabrous 
above, paler and villosulous (principally along the costa) beneath, the veins 
numerous, more or less parallel, anastomosing but running into the marginal 
nerve; stipules indurate-spinescent, acute-lanceolate, often 1 cm. long, at first 
subsearious and hairy, sometimes early deciduous. 
Inflorescences paniculate, terminal, 15 to 80 cm. long, the main rachis thick, 
villous or glabrescent, the branchlets densely hairy, the peduncles (branchlets 
of the second order) grayish-setulose and hairy, 2 to 8-fasciculate, often 
branched, 5 to 10-flowered, 2 to 7 cm. long; bracts of the first order deciduous, 
scarious, broadly lanceolate-subulate, more or less villous, striate, provided at 
the base with a bunch of bright yellow bristles; bracts of the second order 
sealy, clasping, hairy, early deciduous ; bractlets very small, hairy; pedicels 
2 to 5 mm. long, hairy, setulose at the apex; flowers 9.5 to 10 mm, long; bract- 
lets ovate, concave, about 3.5 mm. long, 3 mm. broad, striate and setulose with- 
out; calyx persistent, campanulate, about 5 mm. long, purple, sparsely setulose 
without, the teeth rounded (the carinal one longer, the vexillar ones very broad 
and. irregular) ; petals pinkish purple; standard reflexed, densely silky-pubes- 
cent without, the claw oblique, 1.5 or 2 mm. long, the blade orbicular, slightly 
emarginate at the apex, about 6 mm, long and broad; wings obovate, oblique, 
the claw about 2 mm. long, the blade 1-auriculate and sparsely villous at the 
base, broadly rounded at the apex, 6 to 6.5 mm. long, 3.5 to 4 mm, broad; 
carinal petals falcate, sometimes sparsely villous on the carinal margin, the 
claw as in the wings, the blade rounded-auriculate on the vexillar side, sub- 
acute at the apex, about 6.5 mm. long and 3 mm. broad; stamens glabrous, the 
filaments thicker than the oblong anthers; ovary 1-ovulate, stipitate, canescent- 
hairy, surrounded at the base with a cuplike disk; style short (about 1.5 mm. 
long), glabrous or sparsely villous. 
Young fruits sparsely villosulous, long-stipitate (the stipe about 1.5 cm. long, 
gray-pubescent) ; mature fruits wanting. 
Type in U. 8S. National Herbarium, no. 841737, collected at Zacuapan, Vera- 
cruz, Mexico, in flower, April, 1907, by C. A. Purpus (no. 2430). 
Additional specimens have been examined as follows: 
Mexico: Zacuapan, Veracruz, flowers and young fruits, April, 1913, Purpus 
297. Cdrdoba Valley, Veracruz, flowers, February 25, 1866, Bourgeau 
1987. 
GUATEMALA! San Gerénimo, Sierra de las Minas, altitude about 1,300 
meters, flowers, March 1, 1907, Kellerman 6359. 
This species, represented in all collections at my disposal, was uniformly 
labeled M. angustifolum Vog., apparently on the authority of Hemsley. It 
differs, however, in the peculiar setulose indument of the inflorescence, in the 
size of the leaflets, and in the shape and dimensions of the floral parts. 
