408 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
Conzattia arborea Rose, sp. nov, PLate LIX. 
A small tree or a shrub, 3 to 8 meters high, the trunk sometimes 3 meters long 
and 10 to 30 cm. in diameter, with a broad, rounded top; branches glabrous with 
somewhat reddish bark; leaves very large, 30 to 40 cm. long; pinnre 10 to 15 
pairs; leaflets about 20 pairs, oblong, 10 to 15mm. long, acute, somewhat oblique 
at base, glabrous or a little pubescent along the margin when young; racemes 
clustered near the end of the branches, 6 to 12 cm. long, many-flowered ; pedicels 
glabrous, jointed just below the flower; petals 7 to 8 mni. long; pods 8 to 15 em. 
long, 10 to 15 mm. broad, glabrous, the margins narrowly winged, cuneate at 
base, acuminate at apex, 3 or 4-seeded; seeds oblong, lying lengthwise in the 
pod, 10 to 12 mm. long, glabrous, brown. 
Distribution States of Puebla and Oaxaca, Mexico. 
Specimens examined: 
PuEBLA: Near Tehuacan, J. N. Rose and Jos. H. Painter, August 31, 1905 
(no, 9893, type) ; same locality, J. N. Rose and J. 8S. Rose, September 8, 
1906 (no. 11897). 
Oaxaca: On Cerro San Antonio, C. Conzatti, June 26, 1906 (no. 1421) and 
May 12, 1907. 
Type U. S. National Herbarium no. 4533886. 
EXPLANATION OF PLATE LIX.—Field view, showing habit and conditions. From a 
photograph taken by Dr. D. 'T. McDougal and here reproduced by permission of the Car- 
negie Institution of Washington. 
