AGAVE 



35 



DD. Li'S. broad iind fleshy. 



19. attenua.ta, Salm-Dyck (A. glauc^scens. Hook.). 

 Figs. 47—49. St. 4-5 ft., crowned by a great mass of Its., 

 sometimes G ft. in diam. : Ivs. about 20, 2-3 ft. long, 6-8 

 in. broad at the widest point, very glaucous on both 

 .■sides: fl.-spike5 ft. long; fl. 2 in. long, greenish yellow. 

 Ct.F. 10:95. G.C. II, 2:218, 223. G.C. III. 17: 455, 457. 

 B.M. 5333. Gn. 51,p. 407.-This is one of the most ma- 

 jestic of the Agaves. It has flowered only twice in the 

 United States, — in the Washington Botanical Garden, in 

 1897 and 1898. 



20. Elemeeti^na, Koch. Very near the above, but 

 stemles.s: Ivs. about 25, 1^-2 ft. long, 4J^-6 in. wide ; 

 pale. B.M. 7027. G.C. II. 8:749.-A var. subdentita is 

 sometimes sold. 



cc. Margins of Ivs. more or less toothed. 

 D. Border of Ivs. horny throughout. 



21. univittata. Haw. Stemless: Ivs. about 50, rigid, 



2-2% ft. long, dark green 

 except a pale band down 

 the center: fls. vellowish. 

 Mex. B. M. 6(i55. - Int. 

 about 1830. 



22. heteracdntha, Zucc. 

 Very common. Forms seen 

 in collections show a very 

 polymorphous species. 

 Stemless : Ivs. about 20, 

 with a pale band down the 

 center; teeth widely sepa- 

 rated, never banded, 12 in. 

 long, 2 in. broad. Mex.— 

 Numerous varieties. Int. 

 18G2. 



48. Flowers of Agave 



not 1 



long. W. Tl-x. and N. Wi-x. 

 '""*'"• 24. VictdrisB - Eeginae, 



Moore. Stemless : Ivs. 

 200, very compact, rigid, 6-8 in. long, 1% in. 

 broad, the margin and bands on the back white, obtuse 

 at apex, tipped with a small spine. Mex. Gn. 8, p. 351. 

 G.C. II. 4:485; 11.18:841. l.H.28:413.-A very remarkable 

 species. Int. in 1872, but now seen in all collections. Prob- 

 ably more cult, than any other kind except A.Americana. 

 25. Nissoni, Baker. A small species usually growing 

 in clumps; especially desirable for large vases. L vs. 5-0 

 in. long, with a pale band down the center. Mex. — Not 

 known to have flowered. 



20. h6rrida, Lem. Stemless : Ivs. about 40, compact, 

 rigiil, with a very stout end spine, not striped: fls. nearly 

 2 iu. long, yellowish. Mex. B.M. 6511.— Many forms. 



Var. Gilbeyi, Baker. Lvs. with a pale stripe down the 

 center. G.C. I. 33:1305. Gt. 1874, p. 84. 



27. xylonacAntha, Salm-Dyck. Stout-stemmed: lvs. 20 

 or less, swortl-like, 3 ft. or less long, with a sharp brown 

 point, slightly glaucous green, with a few darker green 

 lines on the back, the margin with a few large teeth: fls. 

 IJ^ln. or less long, greenish yellow. Mex. B.M. 5660. 

 G.C. II. 7:523.-4. Amnrinsis and A. Kdchii, Jacobi, 

 are forms of this species. 



28. Kerchivei, Lem. (A. Beattcdrnei, hem. A.rigid- 

 issima, Jacobi). Stemless: lvs. 20-30, sword-like, a foot 

 or less long, rigid, dull green with a pale central band 

 above, not dark-lined below, with lanceolate curved 

 teeth: fls. IHiu. long. Mex. G. C. II. 7: 523.- Many 

 forms, as diplacdntha, macroddnta, pectin&ta, 



DD. Border of h's. }wt horny. 

 E. Lvs. oblong, ivith small teeth. 



29. Bdtteri, Baker. Stemless : lvs. 50, 2 ft. long, broad, 

 pale green; triangular teeth on margin, crowded and 

 black. Mex. B.M. 6248.— A very beautiful species. 



30. 41bicans, Jacobi. Stemless: lvs. about 30, in a dense 

 cluster, 15 in. or so long, 3-3}^in. wide, tapering to a 

 weak spine, glaucous on both sides, the margin lined 

 with small black teeth: spike of fls. about 15 in. long; 

 fls. yellowish. Mex. B.M. 7207. G.C. II. 8:717.-This is 

 one of the smaller Agaves. It does not die down after 

 flowering. A form with variegated lvs. 



31. C«sii, Hook. {4. Cf?.si()H.n, Jacobi). Stemless: lvs. 

 20-30, oblong-spatulate, 2 ft. or less long, not strongly 

 spine-tipped, the marginal lanceolate spines unequal, 

 glaucous: fls. 2 in. or less long, purplish green, the tube 

 very short. Mex. B.M. 4934. 



32. densiHdra, Hook. Stemless : lvs. 30-40, oblanceo- 

 late-spatulate, 3 ft. or less long, glaucous when young 

 but becoming green, the end-spine Kin. long, the mar- 

 ginal deltoid prickles 1 line or less long : fls. 2 in. or 

 less long, greenish brown. Mex. B.M. 5006. 



33. mitis, Salm-Dyck. Short-stemmed: lvs. 30, oblan- 

 ceolate, 15 in. or less long, 3 iu. at broadest part, tip- 

 spine weak, the teeth very small and green or only ob- 

 scurely brown-tipped, green : fls. 2 in. long. Mex.— 4. 

 micracdntha, Salm-Dyi'k, is very similar. 



Lvs 



very ', 



stly rihbeo 



xrgi. 



.34. striata, Zucc. Stiml.ss ,.r n.-arly so: lvs. 150-200, 

 linear from a wide base, 2.'..>ft. or less long, scabrous on 

 the edge, sharp-tipped, glaucous-green, and ribbed on 

 both surfaces: fl. IJ^in. long, brown-green. Mex. B.M. 

 4950. Cult, under several forms, as var. reciirva, Baker. 

 Lvs. larger and more falcate, not sharp-tipped. Var. 

 stricta. Baker (A. strirta, Salm-Dyck). Dwarf: lvs. 

 very stiff, 1 ft. long. Var. echinoid'es, Baker (A. echi- 

 H!))df.<, Jacobi. A. ensifdrmis and A.Jiichardsii, Hort.). 

 Dwarf and stiff: lvs. only Jaft. long. 



.35. yuccaeldlia, DC. St. short: lvs. 20-40, much nerved, 

 linear and recurved, with a pale center, entire or nearly 

 so. Mex. B.M. 5213. -Int. about 1800. 



36. dasylirioldes, Jacobi. Stemless : lvs. about 100, 

 liii.ar, .stife, very glaucous, serrulate, finely striate ver- 

 ii.'.illv on both faces: fl. nearly 2 in. long, yellow. Mex. 

 l;.M.3716. 

 AA. Folia./e ,n'„l; <nnl s,.fl . ,hi!,„/ d.nri, aiiiiiialh/.- in- 



37. Virginica, Liim. Lvs. f.w. iincii. C-Jii in. long, 

 spreading, lanceolate; pale green or brown mottled, with 

 a narrow white and nearly entire margin: stalk 3-6 ft. 

 high: fls. greenish. S. states. B.M. 1157. 



Var. tigrrina, Engelm., a form from South Carolina and 

 Missouri, has spotted lvs. 



38. maculdsa, Hook. Fig. 50. Basal lvs. 6-10, blotched 

 with brown or green, soft and fleshy, somewhat recurved, 

 the margin serrulate: st. 15-25 in. high, bearing a few 

 scattered Ivs. or leaf -like bracts : fls. 10-25, nearly ses- 

 sile, 2 in. long, purplish ; stamens a little longer than the 

 segments of the fl. S. Tex. B.M. 5122.— Generally la- 

 belled A. maculata. 



of leaf of Agave 



39. maoul&ta, Eegel. A name commonly used for the 

 above, but a very uncertain species. It is probably A. 

 protuberans, Engelm. ^ 



40. braoh^Btachys, Cav. Lvs. lanceolate, green with a 

 pale nearly entire edge : fls. reddish. B.R. 25:55.— Rare 

 in collections, but a very important plant in Mexico, fur- 

 nishing much of the "amole " of the natives. 



