296 PROCEEDINGS OF THE AMERICAN ACADEMY. 
Agave (Huagave) collina. Acaulescent: leaves 30 to 40 in a 
rosette, linear-attenuate, 6 to 8 dm. long, 2 cm. broad just above the base, 
2} cm. broad at the middle, gradually narrowed to the apex and termi- 
nated by a reddish brown spine (2 cm. or more long), margin narrowly 
cartilaginous bearing reddish brown straight or curved teeth (3 to 5 mm. 
long) at intervals of 8 to 18 mm., upper surface concave, below convex, 
bluish green: peduncles 3 to 4 m. long: panicle 6 to 8 dm. long, the 
lower branches about 3 dm. long: flowers greenish yellow, including the 
stamens, 9 cm. long: tube of the perianth 14 cm. long, funnel-shaped ; 
segments linear-oblong, obtuse, thickened at the apex, about 2 cm. long: 
stamens more than twice as long as the perianth-segments ; filaments 
flattened, glabrous, about 5 cm. long from the point of insertion; anthers 
24 to 3 cm. in length: style overtopped by the anthers: fruit a loculici- 
dal capsule, 44 to 5 cm. long, 2} to 38 cm. in diameter; seeds obliquely 
triangular, about 1 em. long. — Collected by C. G. Pringle, on hillsides 
near Cuernavaca, altitude 1,500 m., 1896, no. 6349. This may prove 
eventually to be identical with the imperfectly known species A. serra- 
tula, Karw., but as the flowers and fruit of the latter are unknown, and 
our plant does not agree in all details with the fragmentary description 
of Karwinski, it seems best to regard Mr. Pringle’s plant as a distinct 
cies. 
Nemastylis czerulescens. Bulb ovoid, 14 to 2 cm. in diameter, 
covered with dark brown scales: stem or scape 14 to 20 em. high, 
branched above, bearing 1 to 3 pedunculate spathes: the outer radical 
leaves much reduced, the inner a single linear-attenuate leaf, 10 to 
15 cm. long, usually exceeding the scape; stem leaves reduced to lance- 
attenuate bracts, 3 to 44 cm. long, subtending the inflorescence or pe- 
dunculate spathes: peduncles 1 to 24 cm. in length: bracts of the spathe 
linear-oblong, acuminate, the outer 2 to 3 cm. in length, the inner a little 
longer: pedicels slender, 2} to 34 cm. long: flowers white, sometimes 
with a faint shade of blue, 34 to 44 cm. in diameter, becoming reflexed ; 
divisions of the perianth flabellate-nerved, hirtellous-puberulent above 
near the base, the outer oblong-elliptic, about 6 mm. broad, the inner 
somewhat smaller and a little narrowed toward the base: filaments united 
at the base, free portion flattened, about 2 mm. long; anthers 1 cm. in 
length, curling with age: capsule smooth, obovoid, subtruncate above, 
7 to 10 mm. long, 5 to 7 mm. in diameter: seeds irregularly angled, 
yellowish, minutely pitted, 2 mm. long. — Collected by C. G. Pringle, 
on dry gravelly soil near Cuernavaca, altitude 1,600 m., June, 1896, no- 
6324. A species most nearly related to WV. acuta, Herb. (NV. geminiflora, 
___ Nutt.), but a much smaller plant and with different flowers. 
