AGAVES OF THE GROUP APPLANATAE. 91 
lizeni). Sta. Eulalia (Palmer, 138, 1908; Rose, 11671, 
1908). Cusihuiriachic (Rose, 11654, 1908). Sierre Madre 
Mts., S. W. Chihuahua (Endlich, 1201, 1906). 
Agave Havardiana Trelease. 
A. americana Torrey, Bot. Bound. 213. 1859. 
Agave sp. Engelmann, Trans. Acad. St. Louis. 8: 321. 1875; Bot. 
Works. 314. 
A. Wislizenit Havard, Proc. U. S. Nat. Mus. 8: 519. 1885.—Coulter, 
Contr. U. S. Nat. Herb. 2: 430.—Nelson, Yearbook U. S. Dep. 
Agr. 1902: 315. pl. 33. 
Aspect of A. Parryi, but larger. Leaves essentially smooth, gray, 
lance-oblong, little acuminate, openly concave, 8-15 X 25-40 cm., 
stiffly erect-spreading: spine slightly flexuous, from red-chestnut be- 
coming gray, 5-7 30-45 mm., flat grooved well toward the end, 
decurrent for about its own length: prickles similarly colored, 15-25'or 
30 mm. apart, 3-8 mm. long, mostly recurved or even hooked, rather 
heavily triangular, lenticular when the margin is nearly straight or 
hardened onto the tops of prominences when it is somewhat repand, 
sometimes confluent. Inflorescence 4-5 m. high, the upper third ovoid- 
paniculate: scape moderate: bracts triangular, not crowded, spreading 
or reflexed in age: pedicels 5-10 mm. long. Flowers yellow, about 65 
mm. long; ovary 35 mm. long, fusiform: tube openly conical, 15-18 
mm. deep: segments 5 X 12-14 mm., shorter than the tube and about 
one-third as long as the ovary: filaments inserted about the upper 
third of the tube, 50 mm. long, about four times as long as the 
segments. Capsules narrowly oblong, 15-2060 mm., stipitate 
and beaked: seeds 5X 7 mm. 
Region of the Great Bend of the Rio Grande River.—PI. 
84-86. 
Specimens examined:—Trxas. Wild Rose-Limpio-Pass 
(Wright, 1906, 1851). Chenati Mountains (Havard, 1880). 
Guadaloupe Mountains (Havard, Oct. 1881,—the type). 
Chisos Mountains (Havard, August 1883). 
AGAVE HUACHUCENSIS Baker, Handbook Amaryllid. 172. 
1888.—Gard. & Forest. 8 : 184. f; 229.—Kew Hand List 
Tend. Monocot. 113.—Segura, El Maguey. 4 ed. 72.— 
Trelease, Pop. Sci. Monthly. 70: 209.—Sajo, Prome- 
theus. 20: 23. 
A. huachucaensis Sargent, Gard. & Forest. 8:184. 1894. 
A. applanata huachucensis Mulford, Rept. Mo. Bot. Gard. 7: 85. 
pl. 40, 41. 1896. 
A. Parryi Britton & Kearney, Trans. N. Y. Acad. 14326. 1894, 
