THE AGAVES OF LOWER CALIFORNIA. Bl 
Southern Lower California.—Promontorii,—of the cape, 
from its locality—Map (G). Pl. 35-87. 
Specimens examined :—Sierra de la Laguna (Brandegee, 
Apr. 26, 1892; Nelson and Goldman, 7437, Jan. 21, 1906,— 
the type). Cabo San Lucas (Brandegee, Mar. 18, 1892; 
Rose, 16326, Mar. 23, 1911; Grabendorfer, 1899; and culti- 
vated at San Diego by Brandegee in 1903). San Jose del 
Cabo (Purpus, Jan.-March 1901,—intermixed with A. Bran- 
degeei). 
Dr. Rose assures me that the coastwise plants are less mas- 
sive than the Goldman photograph shows the type to be, 
and further material may prove them to be separable. 
Agave dentiens Trelease. 
Somewhat cespitose, acaulescent. Leaves spreading, glaucous 
gray-green, transversely banded, essentially smooth, elongated-tri- 
angular, gradually acute, concave, becoming channeled near the end, 
3-5 < 80-50 cm., very thick and aloe-like; spine triquetrously conical, 
nearly straight, ashen or by abrasion dull light brown, 38-4 < 20-30 mm., 
involutely slit to beyond the middle, usually very long-decurrent: 
prickles dingy brown or whitish, 5-10 mm. apart, scarcely 1 mm. long, 
mammaeform, very weak and friable, the intervening margin straight. 
Inflorescence 3-4 m. high, more than the upper half paniculate with 
few slender outcurved-ascending branches irregularly branched at the 
end: pedicels slender, scarcely 5mm. long. Flowers? Capsules light 
brown, glaucous, 20 >< 50 mm., stipitate and beaked; seeds? 
Gulf Islands of Sonora rather than Lower California.— 
Dentiens,—teething, because of the rudimentary prickles 
on the margins of its leaves—Map (H). Pl. 38-40. 
Specimens examined :—San Esteban Island (Rose, 16819, 
Apr. 18, 1911,—the type). 
The least prickly of the agaves here considered: more 
likely to have entered by way of the Mexican mainland and 
Tiburon Island than through the peninsula, from which 
San Esteban Island is separated by very deep water; per- 
haps not really of the same alliance as the species centering 
about A. deserti. 
Agave disjuncta Trelease. 
? Agave sp. Vasey & Rose, Contr. U. S. Nat. Herb. 1; 20. 
Habit? Leaves ascending, glaucous, smooth, oblong-triangular, 
concave: spine acicular, nearly straight, slit-grooved to the middle, 
