140 Trans. Acad. Sci. of St. Louis. 
high, loosely few-branched above with the flowers rather 
less compact than usual at ends of the slender spread- 
ing branches: pedicels 2X10 mm. Flowers yellow, 40 
mm. long: ovary 20 mm. long, equaling the perianth, ob- 
long-fusiform: tube conical, 6 mm. deep: segments 14 
mm. long, shorter than the ovary: filaments inserted 
about the middle of the tube, some 30 mm. long, twice as 
long as the segments. Fruit unknown. 
Specimens examined: Guarmmana, Sierra de as 
Minas, opposite El Rancho, at 2000 ft. altitude (Keller- 
man, 5129, March, 1905—the type, as sheet no. 576,279 
in the U. S. National Herbarium). What is taken for 
the same species occurs on the rocks along the Motagua 
River about San Pablo, below Gualan. 
‘@5° Agave tenuispina n. sp. 
Acaulescent, scarcely cespitose. Leaves glaucous, 
forming a rather compact rosette, oblanceolate, acute, 
smooth, about 2070 em.: spine dull brown, acicular, 
smooth or somewhat roughened at base, slightly undu- 
late, involutely grooved from above the middle with 
rather blunt edges, decurrent for scarcely half its length 
and not intruded into the green tissue, 360-70 mm.: 
teeth brown, somewhat glossy, 20-40 mm. apart, 5-10 
mm. long, curved in either direction, rather narrowly 
triangular, somewhat deltoidally enlarged into fleshy 
prominences between which the margin is somewhat con- 
cave, or into the otherwise nearly straight margin. In- 
florescence, flowers and fruit unknown. 
Specimens examined: Guatemata. Mountainsides at 
Cruz (Trelease, 4, March, 1915—the type in the herba- 
rium of the University of Illinois). 
‘744 Agave opacidens pn. sp. 
Acaulescent, sea 
reely suckering. Leaves glaucous, 
lanceolate, acute, 
roughened on the back and margin, 
