POtOsilK,. II; I'-:, . I ..,.,,, // ■ .^ I. 



rigitUi. :;; /■-„.'/ ., ;-,-■" •■ ■ i._. ',,. ii; 



Scolvnui-, II: >rl,Miii,, i- M, :,»,,. :i; -i^.- , ,;; -in- 



ata, ;« ; strkaa,:)4; iavluri. IT: J Ininraintisis. :> ; mn- 

 vittata,21; Utaheusis, 12; vestita, 15; Vietoriffi-Regiuee, 

 24; Virginica, 37; xylonacantha, 27; yuccaefolia, 35. 



A. Foliage persisting from year to year: inflorescence 



thiisi . )iiinii/-il,l.: plants flowering after a more 

 nrl.ss l,.,„, u,i,rml, often but once, in others 



B. Itiflorcsi'iirr It rnuipact panicle; fls.h07fie in clusters 

 near the ends of horizontal branches. {Euagave.) 



1. Americana, Linn. Common Centurt Plant. Pigs. 

 45, 46. Plants becoming very large : Ivs. 40-50, either 

 straigiit or the tips recurved; the margin scalloped be- 

 tween the sharp teeth: fl. 3 in. long, yellow. The most 

 common species in cult. A.F. 7:503. Gn. 12, p. 397. 

 G.C.III.19:17. Gn.47,p.59. F.E. 10:595. Trop. Amer. 

 Several varieties, of which var. picta, var. variegAta (B. 

 M. 3654) and var. recuiv4ta are the best known. -Some 

 forms have Ivs. striped, and others bordered with yellow. 

 This species is the one which is commonly grown as a tub 

 plant by florists, being used out-of-doors in the summer 

 for lawn and porch decoration. 



2. Mezic&na, Lam. Plants becoming very large : Ivs. 

 20-30 ; similar to ^. ^nifricaHK. Common in Eu. Int. 

 about 1817, from Mex. G.C. II. 19:149. 



3. rigida, Miller. St. wanting or sometimes 4 ft. long: 

 Ivs. thin, narrow, elongated; the margin either smooth 

 or toothed. S. Mex. Perhaps more than one species in- 

 cluded under this name. A, angustif ilia, Yiam., seems 

 to belong here. B.M. 5893, as A . ixllioXdes . Gng. 5: 89. 



Var. elong4ta, Baker {A. Cundelitbrum, Todaro). St. 

 /iiucli i-loriKuti-il. 



Var. SisalAna, Engelm. Sisal Hemp. Margin of the 

 Ivs. entire. Yucatan. Naturalized on Pla. keys. — Rec- 

 ommended for cult, on a large scale in certain cheap 

 lands of Fla. Largely grown in Yucatan as a fiber plant, 

 the fiber being exported to U. S. and used in making 

 cheap cordage. 



4. Pringlei, Enff.lm. Lvs. sword-like, very stiff, 18 

 in. or l<-s-< N'Tit,'. TKirniwfd from near the base to the 

 sharp tip. till- iiiaii.'iii with small, hooked, brown prick- 

 les: H. P,in. l.,iif,'. yill'iw. LowiT Calif. 



5. atrbvirens, Karw.(. I .•//'"'/'■/'..... Karw. A.Sal- 

 TOidita, Otto). Often aii^n _ Mze: lvs. few, 



10-30, becoming 9 in. t>r i : ' I- 'Ik,', very thick 



at base and glaucous tlir.inLlhnii. ii] p..! with a stout 

 spine; the upper part of tlic margin horny: fi. 4; 



long Mex. G.C. H - -- 



under this name. 



Var. latissima {A. latlssima, coarct&ta, Lehmanni, 

 and mitrmfdrmis, Jacobi). Lvs. broader, oblong-spatu- 

 late (8-9 in. broad above the middle). 



6. cocUe&Tis, Jacobi. Pulque Plant of W. Mex. 

 Very similar to the above, but lvs. longer and a foot 

 wide, not glaucous. Int. about 1867, but rare in col- 

 lections. 



7. applan&ta, Lem. Stemless : lvs. sometimes 150, 

 3-3J^in. broad, stiff and glaucous, with long, pungent 

 end spinf: tl. !! in. l.'iitr, greenish yellow. — A beautiful 

 species frdiii M. \. Int. about 1862. 



8. macracantha, V.w-r. Small, stemless, compact: lvs. 

 about .'id. a fnnt i.iii:,'. virv stiflf and pungent, glaucous: 

 fls. in a lax raceme, lut.'about 1830, from central Mex. 

 G.C. 11. 8:137. 



9. Sh&wii, Engelm. Stemless : lvs. 50-60 or even 

 more, oblong-spatulate, 8-10 in. long, dull green and 

 slightly glaucous, with a brown tip-spine an inch long, 

 the edge with upturned brown teeth ^in. or less long: 

 fls. 3-3Kin. long, greenish yellow. S. Cal. Int. about 

 1875. 



10 Desirti, Engelm. Stemless : lvs. few, in a rosette, 

 oblanceolate, a foot or less long, deep concave above, 

 very gUiucous, tip-spined, the lower half of the blade 

 with hooked prickles : fl. yellow, 2 in. or less long. S. 

 Cal. Int. about 1875. 



-Several species have passed 



AGAVE 



11. Sc61ymu3, Karw. Lvs. 20^0, 9-18 in. long. 3-6 in. 

 1' i.h . .'laucijus; the margin indented between the teeth: 



' J in. long, yellowish. Mex. Gn. 12, p. 397. Int. 

 :.••■■ I l->n._Said to be common, with several varieties. 

 .1 !■■■'•' I ""(in, Zucc, may be only a form of the above. 



12. UtahSnsis, Engelm. Stemless : lvs. sword-like, 1 

 ft. or less long, thick and rigid, the sharp tip-spine an 

 inch long, the margin with triangular teeth, glaucous: 

 tl. an inch long. Utah and Ariz. 



BB. Inflorescence a dense, cylindrical spike; fls. usu- 

 ally borne in twos (Littaia ) 

 C Margins of lvs not toothed 



Lis In, 



sttfT 





(th tin margins splitting 



In II ?s 



I I in ill, compact, about 

 Ml I stiff, 9 or 10 m in 

 III 1 \ i\ pungent tip fl 

 It i .n.; M. \ r, C III 



14 schidigera, Lem 



but with some 



•*!'' whit broadei hs and 



^\ the msr.'in splitting off 



•tt lnto^^h,te.ll,:,ons Mex 



a h M i(i4I -Frequently 



iiitpi:^' 



15. vestlta, Watson, also of thetype ot^. filifera. is a 

 very recently described and introduced species. Lvs. 

 more bronzy than that species. Mex. table lands. A.G. 

 1892: 609. -It deserves a place in any large Agave col- 

 lection. 



16. geminifldra, Ker-Gawl. [Bonapdrtea juncea. 

 Haw.). Lvs. often 200-300, narrowly linear, somewhat 

 recurved, 1^-2 ft. long, somewhat convex on both 

 sides: flower stalk sometimes 25 ft. long. Mexico, where 

 it grows commonly along streams. B.R. 1145. F.S. 7, 

 p. 6. — Very common. 



17. Tiylori, Hort. A garden hybrid of ^.^eminirtom 

 and A. densiflora is often seen in cult. Mn. 7:111. 

 G.C. II. 8:621. 



18. Sch6ttii, Engelm. (A. gemniflira var. SonbrcB, 

 Torr. ) . Stemless : lvs. linear, 1 ft. or less long and only 

 Ys in. broad, flat or concave, very rigid, sharp-tipped, 

 the margin usually with white threads: fls. l^iin. long 

 S.Ariz. B.M. 7567". 



