122 PROCEEDINGS OF THE AMERICAN ACADEMY. ” 
size. These species, however, are too poorly known, especially in the 
staminate forms, to permit satisfactory determination in this case. 
Ficus JAuiscana, Wats. (Proc. Am. Acad. xxvi. 150). Addi- 
tional material of this species, collected at Granados, Sonora, at 3,700 
feet, by Mr. Hartman, 15 November, 1890 (no. 217), shows that the 
plant has leaves often 6 inches long ; also fascicled aerial roots a foot 
and a half (or more) in length. 
SPIRANTHES VELATA. Roots clustered, tuber-like : leaves (at least 
at the time of flowering) none: stems 1-2, erect, 9-12 inches high, 
thickish and enveloped in loose white scarious brownish-veined ovate- 
oblong attenuate bracts; the floral bracts similar, smaller but exceed- 
ing the flowers: spike dense, oblong, 2-3 inches in length: sepals 
subscarious; the lateral ones oblong-lanceolate or linear-lanceolate, 
acuminate, 3-nerved, 4 lines long; the upper one free nearly half its 
length, attenuate : petals acutish, narrowly ovate, nearly as long as the 
upper sepal, also subscarious and brownish nerved; lip rhombic, 
rounded at the tip, crenulate throughout, thickish, about 6 lines long, 
finely granulated above and bearing two small oblong hoary-pubescent 
callosities at the base. — Collected in a cafion parallel with the Cafion 
de los Alamos on Rio San Miguel, Chihuahua, by Mr. Hartman, 28 
June, 1891 (no. 710). 
BRavoa penstrtora. Root of many spreading thickened fibres ; 
bulbs loose, oblong, becoming 2 inches long and an inch or more in 
thickness: radical leaves linear, attenuate, 3—4 inches long, a line wide ; 
the cauline reduced to bracts, 1-2 inches long, with broad scarious and 
attenuate tips; the floral similar: spike short, dense; flowers single in 
each bract, slender, tubular, spreading, curved, 17-22 lines long, dull 
yellow in a dried state, pulverulent-tomentulose upon the outer surface ; 
limb oblique; segments ovate, obtuse, only 1-14 lines long, erect, 
bearing a tuft of short white hairs at the tip: anthers inserted high up 
in the scarcely ampliate throat: fruit (immature) ovate, over 3 lines 
in diameter. — Collected on dry mesas near Varogachic, Chihuahua, 
by Mr. Hartman, 5 July, 1892 (no. 536). 
Pinus Lumnotrzu. A tree, 30-40 feet in height: branchlets 
elongated, } inch in diameter: leaves in 3’s, springing from the 
lower surface of the branchlets, pendulous, 10-13 inches long, 3? line 
mM breadth, nearly flat and shining upon the dorsal surface, carinate 
Upon the ventral ; margins scarcely involute: sheaths quite obsolete : 
bud Scales lanceolate, attenuate, tawny, somewhat lacerate-ciliate, 3k 
lines long: aments and cones unknown. — Collected near Coloradas, | 
by Mr. Hartman, May, 1893 (no. 541). A beautiful species, striking 
