62 MISSOURI BOTANICAL GARDEN. 
branched at end: pedicels under 5 mm. long. Flowers 45-55 mm. long: 
ovary about 22 mm. long, glaucous, stoutly fusiform: tube 8-10 or even 
12 mm. deep: segments 3-4 < 12-15 or 20 mm., considerably exceeding 
the tube and more than half as long as the ovary: filaments inserted 
about the middle of the tube, 35-45 mm. long and more than twice as 
long as the segments, with typically very long (30 mm.) anthers. 
Capsules brown, broadly oblong or pyriform, about 20 < 35-40 mm., 
stipitate and shortly beaked: seeds 6 X 7 mm. 
Southern Lower California.—Datylio,—said by the author | 
of the species to be its local vernacular name.——Map (W). 
Pl. 68, 69. 
Specimens examined:—La Paz—the type locality (Rose, 
1302, June 14, 1897; 16540, Mar. 29, 1911; Brandegee, 
1899). San Pedro (Brandegee, 581, Oct. 29, 1891). 
Agave vexans Trelease. 
Habit? Leaves grayish green, smooth, linear-triangular, very grad- 
ually acute, openly concave becoming channeled toward the end, 2>< 
20-45 cm., stiff and straight: spine dull gray-brown, triquetrously 
conical, essentially straight, 3-5 < 25-35 mm., grooved in the lower 
part: prickles fading from dull dingy brown, rather easily detachable, 
15-20 or 30 mm. apart, 3-4 mm. long, heavily triangular, or with some- 
what slender cusps. Inflorescence 1.5-2 m. high, lightly glaucous, the 
slender scape with slender outcurved-ascending branches short-branched 
at the end: pedicels scarcely 5mm. long. Flowers apparently green- 
ish, about 40 mm. long: ovary glaucous, 20-25 mm. long, fusiform or 
flask-shaped: tube about 8 mm. deep; segments 3-4 X 12-15 mm., about 
twice as long as the tubeand more than halfas long as the ovary: fila- 
ments inserted about the middle of the tube, scarcely 25 mm. long or 
twice as long as the segments, with rather short (15 mm.) anthers. 
Capsules light gray-brown, broadly oblong, 20 X 35-45 mm., shortly 
stipitate, conspicuously beaked: seeds 5 X 6 mm. 
East-central Lower California.—Vexans,—annoying, be- 
cause of its occurrence apart from its close relative, A. Daty- 
lio. Map (X). Pl. 70-72. 
Specimens examined:—Purisima? (Brandegee, 1889). 
Paso de los Dolores to Lake Ramon (Brandegee, April 4, 
1889). Near El Potrero, below Mulege (Nelson and Gold- 
man, 7237, Oct. 81, 1905,—the type). 
