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114 PROCEEDINGS OF THE AMERICAN ACADEMY. 
zy. 
CONTRIBUTIONS FROM THE GRAY HERBARIUM OF HARVARD 
UNIVERSITY, NEW SERIES, NO. VIIL 
NEW PLANTS COLLECTED BY MESSRS. C. V. HART- 
MAN AND C. E. LLOYD UPON AN ARCH AZOLOGICAL 
EXPEDITION TO NORTHWESTERN MEXICO UNDER 
THE DIRECTION OF DR. CARL LUMHOLTZ. 
By B. L. Rogrnson anv M. L. FERNALD. 
Presented May 9, 1894. 
Crossosoma parvirtora. A shrub, 4-8 feet high: branches 
covered. with gray bark; branchlets slender, elongated, and often 
flexuous, sometimes straight and a little rigid; cortex yellow: leaves 
elliptic-oblong, obtuse and mucronulate at the apex, pale green upon 
both surfaces, thickish, 1-nerved, 4-6 lines long, 14-2} lines broad: 
sepals 5, broadly oblong or suborbicular, 13-2} lines long: petals 5, 
oblong, 3 lines in length: stamens 15-20: carpels 3-4; follicles 
glabrous, reticulated, only 3-34 lines long. — Collected in the Grand 
Cafion of the Colorado, by Dr. Gray, February to May, 1885, but 
referred to Glossopetalon Nevadense, Gray; and at La Tinaja, Sonora, 
at 3,700 feet, by Mr. Hartman, 19 November, 1890 (no. 245). 
ERIODENDRON ACUMINATUM, Wats. (Proc. Am. Acad. xxi. 418). 
Specimens apparently of this species, but representing other stages 
than those shown by the type, were collected in Western Chihuahua 
but without more exact locality. The older branches are armed with 
stout spreading spines 3-4 lines in length, while the younger ones, as 
Dr. Watson states, are unarmed; the young shoots and leaves are 
densely tomentose: the calyx deeply campanulate, an inch long, shal- 
lowly 5-toothed, glabrous and glaucous upon the outer surface, densely 
sordid tomentose within; teeth rounded, often split (perhaps in dry- 
ing): petals linear, 5 inches long, 4 lines broad, very appressed silky 
Upon one side of the outer surface, tomentose upon the s‘de covered 
'n the bud; glabrate upon the inner surface: stamens included. —The 
Mexican name is “ Pochate.” ‘The fleshy white roots are eaten, the 
