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: Guatemala. Sierra de las 

 Minas, opposite El Eancho, at 2000 ft. altitude (Keller- 

 man, 5129, March, 1905 — the type, as sheet no. 576^79 

 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. 



Agave tenuispina n. sp. 



Acaulescent, scarcely cespitose. Leaves glaucous, 

 forming a rather compact rosette, oblanceolate, acute, 

 smooth, about 20x70 cm.: 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, 3x60-70 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: Guatemala. Mountainsides at 

 Cruz (T release, 4, March, 1915 — the type in the herba- 

 rium of the University of Illinois). 



Agave opacidens n. sp. 



Acaulescent, scarcely suckering. Leaves glaucous, 

 lanceolate, acute, roughened on the back and margin, 



