AGAVE 



VD. Jjl's. brofitl and fleshy. 



19. attenuita, Salm-Dyck (.1. (jUiuci^xcens, Hook.). 

 Pigs. 47-49. St. 4-5 ft., crowned by a great mass of Ivs., 

 sometimes 6 ft. in diam. ; Its. about 20, 2-3 ft. long, C-8 

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

 sides: fl.-spikeS ft. long; tl. 2 in. long, greenish yellow. 

 G.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. Elemeetiina, Koch. Very near the above, but 

 stemless: Ivs. about 25, lK-2 ft. long, 4H-G in. wide ; 

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

 sometimes sold. 



CO. Margins of Ivs. more or less toothed. 

 D. Border of Ivs. horny throughout. 



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



2-2K ft. long, dark green 

 except a pale band down 

 the center: fls. vellowish. 

 Mes. B. M. 6055. - Int. 

 about 1830. 



22. heteraointha, Zucc. 

 Very common. Forms seen 

 in collections show a very 

 polymorphous species. 

 Stemless : Ivs. about 20, 

 with a pale baud down the 

 center; teeth widely sepa- 

 rated, never banded, 12 in. 

 long, 2 in. broad. Mex.— 

 Numerous varieties. Int. 

 18G2. 



LechegnlUa, Torr. 

 I- ,-, ,1,11,1, .11 ill collec- 



Kiith, 



Flowers of Agave 



as A.het,rHe„ntha. Seem- 

 ingly a good .species, 

 though referred by Baker 

 to A. heteracantha. Lvs. 

 not banded, and spine very 

 long. W. Tex. and N. Mex. 

 24. VictdrisB - Eeglnae, 

 Moore. Stemless : lvs. 

 sometimes 200, very compact, rigid, 6-8 In. long, IH 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. I. 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 .4. .^Imericaiia. 



25. Nissoni, Baker. A small species usually growing 

 in clumps; especially desirable for large vases. Lvs. 5-6 

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

 known to have flowered. 



26. h6rrida, Lem. Stemless : lvs. about 40, compact, 

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

 2 in. 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. xylonacdntha, Salm-Dj-ck. Stout-stemmed: lvs. 20 

 or less, sword-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. 

 IKin. or less long, greenish yellow. Mex. B.M. 5G60. 

 G.C. II. 7:523. — J. Amurhisis and A. Kdchii, Jacobi, 

 are forms of this species. 



28. KereMvei, Lem. {A. Beaucdrnei, hem. A.rigid- 

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



AGAVE 35 



30. Albicans, Jacobi. Stemless: lvs. about 30, in a dense 

 cluster, 15 in. or so long, 3-3Kin. 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. C61sii, Hook. (4. Ctfsidim, Jacobi). Stemless: Ivs. 

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

 spine-tippeil. the mareiiiiil lanceolate spines unequal, 

 glaui-i.ii^: iK.iJ iii.Mii.x^ i.,111,'. purplish green, the tube 



ess: lvs. 30-40, oblanceo- 

 11 K. glaucous when young 

 spin,- '._,iu. long, the mar- 



.'f. densiflora, \\^^^•' 

 late-spatulal.', :; li. n 

 but bei/ouiiiii; i.'n,ii, 

 ginal deltoid pi-i.-kl, - 

 less long, giviMiisl, hn.wn. M<s. Ji.M. 5006. 



33. mitis, Siihu Dy.'k. Sliort-st.uimed: lvs. 30, oblan- 

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

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

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

 micracdntha, Salm-Dyck, is very similar. 



EE. Lvs. veril iiarruir. icuk. 11,.' snrfn,;' iiinxlhj ribbed: 



34. striata, Zii. v. Sf.H.li^^ ,.,■ i„:,ily >w: lvs. 150-200, 

 linear from a wi,l*' ti:,s,-, 'J'..t*t. "r It-ss I'ni^. scabrous on 

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

 both surfaces: fl. 1 Kin. long, brown-green. Mex. B.M. 

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

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



Jioirff.s-, Jacobi. A. ensifdrmis ami A . Jiichardsii, Jiort.) . 

 Dwarf and stiff; lvs. only Kft. long. 



35. yuccaefdlia, 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. dasylirioides, Jacobi. Stemless : lvs. about 100, 

 linear, stiff, very glaucous, serrulate, finely striate ver- 

 tically on both faces; fl. nearly 2 in. long, yellow. Mex. 

 B.M. 5716. 



AA. Foliage weak atid soft, dying down annually : in- 

 florescence a slender open raceme or spike : st, 

 arising from true bulbs. (Manfreda.) 



37. Virginica, Linn. Lvs. few, green, 6-20 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. tigrlna, Engelm. , a form from South Carolina and 

 Missouri, has spotted lvs. 



38. maculdsa, Hook. Pig. 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 lvs. 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. macnlata. 



af of Agave attenuala 



DD. Border of lvs. not horny. 



E. Lvs. oblong, with small teeth. 



29. Bbtteri, 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. 



39. maouiata, Kegel. A name commonly used for the 

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

 protuberans, Engelm. , 



40. brachystachys, 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. 



