60 MISSOURI BOTANICAL GARDEN. 
Agave avellanidens Trelease. 
Agave sp. Brandegee, Proc. Cal. Acad. ii. 2208. 1889. 
Habit? Leaves smooth, broadly lanceolate, long-acuminate, rather 
~ channeled toward the end, 11 upwards of 60? cm.: spine drab, slightly 
polished at the end only, narrowly conical, wavy, 5X 50 mm., round- 
grooved to beyond the middle, long-decurrent: prickles similarly col- 
ored, glossy, 25-50 mm. apart or with a smaller one intercalated, as 
much as 10 mm. long and5 mm. wide, broadly triangular, variouly and 
unequally gently curved, somewhat lunately dilated to about 10 mm. 
onto the tops of broad very low elevations of the little repand margin. 
Inflorescence paniculate: pedicels 5-10 or 12 mm. long, rather slender. 
Flowers 60 mm. long: ovary 35 mm. long, fusiform: tube 5 mm. deep: 
segments 4 >< 20 mim., very much longer than the tube and more than 
half as long as the ovary: filaments inserted in the throat of the tube, 
40 mm. long and twice as long as the segments. Capsules dark brown, 
broadly oblong, 20 < 35 mm., not stipitate and scarcely beaked: seeds? 
East-central Lower California—A vellanidens,—filbert- 
toothed, from the nut-color of its prickles—Map (T). Pl. 
61, 62. 
Specimens examined: Paraiso (Brandegee, 6, May 5 
1889,—the type). 
Agave subsimplex Trelease. 
Habit? Leaves very glaucous, somewhat transversely banded be- 
low, nearly smooth, broadly oblong- or elliptical-lanceolate, slightly 
acuminate, about 5 15 cm.: spine slightly curved, shortly acicular, 
dull ashen-gray, 3 < 20 mm., round-grooved below the middle, little- 
decurrent: prickles from blackish purple or through yellow and scarlet 
becoming similarly colored, 10-20 mm. apart, 5-10 mm. long, nar- 
rowly triangular, mostly upcurved above and recurved below, little 
widened into the tops of rather high fleshy prominences between which 
the margin is rather straight. Inflorescence slender, narrowly panicu- 
late, the lower branches short-branched, the upper nearly simple: 
pedicels extremely short. Flowers? Capsules brown, apparently 
varying greatly and almost inconceivably: short (15 < 30 mm.) and 
rather obscurely stipitate and beaked; or much larger (20 65 mm.) 
with prominent beak and long stipitate contraction: seeds about 4x 
5 mm. 
Gulf Islands of Sonora.—Subsimplex,—nearly un- 
branched, from its inflorescence.—Map (U). Pl. 63, 64. 
Specimens examined :—Seal Island, just off Tiburon Is- 
land- (Rose, 16811, Apr. 18, 1911,—the type). 
