AGAVES OF THE GROUP APPLANATAE. 89 
AGavE WISLIZENI Engelmann, Trans. Acad. St. Louis. 3: 
320. 1875; Bot. Works. 313.—Baker, Gard. Chron. n. 8. 
8:40; Handbook Amaryllid. 175.—Ricasoli, Bull. Soc. 
Tose. Ort. 8: 235.—Terracciano, Primo Contributo. 37. 
—Hemsley, Biol. Centr.-Amer. 3: 352.—Watson, Proc. 
Amer. Acad. 18: 162.— Nicholson, Dict. 1: 41; Dict. 
Prat. 1: 88.—Lubbock, Seedlings. 2: 575.—Segura, El 
Maguey. 4 ed. 80.—Braun, Pflanzer. 2: 232.—Endlich, 
Beihefte Tropenpflanzer. 9: 279. 
A. scabra Salm, Bonplandia. 7:86, 89. 1859; Wochenschr. Verein 
Beférd. Gartenbau. 1861: 178, 181; Fl. des Jard. 5:117, 123.— 
Koch, Wochenschr. Verein Beférd. Gartenbau. 3324; 8: 186; 
Belg. Hort. 12:188; Fl. des Jard. 4:109.—v. Jacobi, Ham- 
burg. Gart.-Zeit. 213123; Versuch. 6, 7, 16, 88. 
7A. scabra oblongata v. Jacobi, Nachtrag. 6. 1867. 
2A. Wislizenia Van Geert, Cat. 58:25. 1865-6. 
A. Wislizenii Kew Hand List Tend. Monocot. 123. 1897. 
A. Noah Nickels, Cat. 26 : 20. 
Agave sp. Nelson, Yearb. U. S. Dept. Agr. 1902 : 314. — Fair- 
mount Park Cat. Tender Pl. 8 pl. 1907. 
Acaulescent. Leaves essentially smooth, dull gray, rather thin and 
pliable for the group, broadly ovate, very shortly acuminate, deeply 
concave, 10-15 X 20-25 cm., stiffly erect-spreading: spine somewhat 
curved, dark chestnut or graying, 3-4 15-20 mm., round-grooved to 
beyond the middle, decurrent for about its own length: prickles sim- 
ilarly colored, 15-20 mm. apart, 3-8 mm. long, rather straight above, 
reflexed or recurved or sometimes hooked in either direction below, 
narrowly triangular, lenticular or hardened onto the tops of low prom- 
inences, the intervening margin slightly concaved. Inflorescence 4 
m. high, the upper half ovoid-paniculate: scape rather stout: bracts 
deltoid, not imbricated, suberect: branches nearly horizontal: pedicels 
about 5 mm. long. Flowers yellow, 55-65 mm. long: ovary 25-30 mm. 
long, fusiform: tube narrowly conical, 12-15 mm. deep: segments 
5 X 10-12 mm., rather shorter than the tube and scarcely half as long 
as the ovary: filaments inserted about the upper fourth of the tube, 
85 mm. long, about thrice as long as the segments. Capsules rather 
narrowly oblong, 15 < 40-45 mm., somewhat stipitate and beaked: 
seeds 4 6 mm. 
North-central Mexico.—Pl. 75-79. 
Specimens examined:—CoanuiLa. San Sebastian, in the 
vicinity of Parras (Wishzenus, 280, May 10, 1847,—the 
type). 
