234 



AGAVE 



AGAVE 



in., glaucous, with nearly straight openly grooved spine 

 and smaller prickles: infl. 10-15 ft.; fls. 2^ in.; ovary 

 \Y% in., segm. /^-%in., tube J^in.: caps, oblong, 

 beaked but scarcely stipitate. Ariz., New Mex. and 

 adjacent Mex. G.C. II. 12, p. 237. 

 Rep. Mo. Hot. Gard. 22, pi. 91-93. 

 D.G.Z. 18, p. 3. Closely related 

 species are A. huachucensis, Baker, 

 Rep. Mo. Bot. Gard. 22, pi. 87-89, 

 of the Huachuca Mts., with broad Ivs. ; 

 A. Havardiana, Trel., Rep. Mo. Bot. 

 Gard. 22, pi. 84-86, of the great bend 

 of the Rio Grande, with deep-seated 

 filaments, and A. gracilipes, Trel., 

 Rep. Mo. Bot. Gard. 22. pi. 98, 99, 

 of W. Texas, with slender pedicels 

 and small seeds, etc. A. Couesii, 

 Engelm., Rep. Mp. Bot. Gard. 22, pi. 

 94-97, on flowering proves scarcely 

 separable. 



15. Wislizenii, Engelm. (A. Noah, 

 Hort.). Lvs. broadly ovate, acumi- 

 nate, 4-6 x 8-10 in., gray, concave, 

 with somewhat curved round-grooved 

 spine and slender prickles: infl. 12 ft., 

 open; fls. 2-2% tn-l ovary 1J4 in., 

 segm. Jiin., tube Yiva.'. caps, slender, 

 obscurely stipitate. N. Mex. Rep. 

 Mo. Bot. Gard. 22, pi. 75-79. 

 A more glaucous and repand 

 plant from the same region is 

 A. parrasana, Berger, Rep. Mo. 

 Bot. Gard. 22, pi. 80, 81. 

 Thicker-lvd. related New Mex. 

 forms are A. chihuahuana, 

 Trel., Rep. Mo. Bot. Gard. 

 22, pi. 82, 83, and A. Pat6nii, 

 Trel., Rep. Mo. Bot. Gard. 22, 

 pi. 90. 



BBBBB. Lvs. similar, somewhat repand: spine decurreni 

 and the large teeth often confluent: fls. in compact 

 clusters, large, yellow, not followed by bulbils. 

 Trunk elongated but leafy. 



16. Shawii, Engelm. Lvs. ovate or lance-ovate, 

 acuminate, 3-5 x 8-20 in., green, glossy, with slender, 

 flexuous, openly grooved spine and large, hooked, con- 

 nected, garnet-red prickles: infl. 10 ft., congested; fls. 

 2J-JJ-3 Yi in.; ovary \%-\ l /i in., segm. and tube J^in. : 

 caps, oblong, thick-walled. S. W. Calif, and adjoining 

 Low. Calif. Trans. Acad. St. Louis 3, pi. 2-4. Rep. 

 Mo. Bot. Gard. 7, pi. 44; 22, pi. 19-21. Related Low. 

 Calif, species are A. Orcuttiana, Trel., Rep. Mo. Bot. 

 Gard. 22, pi. 22, with similar spine and A. Sebastiana, 

 Greene, Rep. Mo. Bot. Gard. 22, pi. 23-26, with straight 

 spine; and A. pachyacantha, Trel., Rep. Mo. Bot. 

 Gard. 22, pi. 27, 28, and A. Goldmaniana, Trel., 

 Rep. Mo. Bot. Gard. 22, pi. 29-31, with heavier-based 

 teeth and thin- walled caps, in all. 



BBBBBB. Lvs. large, fleshy rather than firm, usually re- 

 pand: fls. openly panicled, large, yellow, rarely 

 followed by bulbils. Nearly trunkless. 

 C. Spine large and long-decurrent. 



17. ferox, Koch. Lvs. broadly oblanceolate, wavy, 

 suberect with outcurved concave acuminate tip, 12 x 48 

 in., green, deeply repand, with large grooved spine and 

 great prickles on high green prominences: infl. 20 ft.; 

 fls. 3J in.; ovary \\^ in., segm. 1 in., tube %\n. Cent. 

 Mex. G.C. III. 15, p. 628; III. 20, p. 525; III. 43, p. 

 379. G.W. 2, p. 603. 



18. mitrseffirmis, Jacobi (A. coarctata, Jacobi ? A. 

 Bonnetiana, Hort.?) . Lvs. obovate-oblanceolate, acumi- 

 nate, 12 x 30 in., grayish-zoned, rather repand, with 

 large grooved spine and moderately large gray chest- 

 nut-tipped prickles on green prominences: infl. 15-20 



139. Agave americana in 

 flower. (No. 21.) 



ft.; fls. 2li in.; ovary 1>6-1M in., segm. ^in., tube 

 3^in. S. Mex. Karsten & Schenck, Veg. Bilder, pi. 47. 

 Anales Mus. Nac. Mex. 2, pi. j. Publ. Carnegie Inst. 

 99, pi. 20. This is A. tehuacanensis, Koch, Karwinski's 

 plant of that name being apparently a form of A. 

 Verschaffeltii. A yellow-margined, variegated agave, 

 listed under A . mitrseformis by the Belgian dealers about 

 1876, appears to be A. atrovirens mnrginata. A cross 

 with A. densiflora is said to have been effected. 



19. atrdvirens, Karw. Becoming enormous: Ivs. 

 lanceolate, 12 x 80-100 in., dark green or (when it is 

 A. Salmiana, Jacobi) gray, outcurved-ascending, with 

 large, narrowly grooved spine and moderate gray 

 prickles from low widened bases: infl. 20-30 ft.; fls. 

 3J- in.; ovary 2 in., segm. 1 in., tube J^in. S. Mex. D. 

 Gart. Mag. 1867, p. 28., f . Contr. U. S. Nat. Herb. 5, 

 pi. 31-33. S.H. 4, p. 281. Pop. Sci. Monthly, 70, p. 

 210-216. (Esterr. Gart. Zeit, 1911, p. 252. Prometheus 

 20, p. 24. Journ. N. Y. Bot. Gard. 8, p. 10. Modern 

 Mex. 17, p. 26-28. Proc. U. S. Nat. Mus. 33, p. 577, 

 etc. The principal pulque species cultivated on the 



Elains of Apam. Numerous varieties are figured by 

 egura, El Maguey, 4 ed., pi. 1-9. Vast confusion 

 exists in current literature: the names A. americana and 

 A. mexicana are often applied to this, and it is difficult 

 to account elsewhere for the many new Latin names 

 given to pulque magueys by Blasquez, and to a number 

 of young garden plants by Jacobi. A yellow-margined 

 variety (also listed as belonging to A . mitrseformis) is 

 var. marginata, Trel. A very large- and concave-lvd. 

 unvariegated form is Var. cochlearis (A. latissima, 

 Jacobi. A. Whitakeri, Hort.). Other important pulque 

 or agua-miel species are: about the City of Mexico, 

 A. Mapisaga, Trel. (maguey mapisaga) with narrow 

 small-prickled Ivs.; about Durango, A. compluviata, 

 Trel. (maguey verde), with green-zoned deeply gutter- 

 shaped Ivs., and A. quiotifera, Trel. (maguey ceniso), 

 with ashen Ivs.; about San Luis Potosi, A. gracilis- 

 pina, Engelm. (A. potoslna, Web.), with slender spine, 

 and A. crassispina, Trel., with stout spine; and about 

 Monterey, A. melliflua, Trel. (maguey manso), with 

 elongated ashen Ivs., and A. zonata, Trel. (maguey 

 verde), with broad green-zoned Ivs. 



20. Franzosinii, Baker. Fig. 138. Lvs. lanceolate, 

 12 x 80-100 in., roughish, white, recurved-ascending, 

 with large narrowly grooved spine and dark or gray 

 prickles: infl. green, in striking contrast with the Ivs., 



140. Agave americana, as commonly grown in greenhouses. 

 The yellow-margined form. (No. 21.) 



30 or 40 ft.; fls. Z\4 in.; ovary \% in., segm. 1 in., tube 

 Vim. Mex.(?). B.M. 8317. G.W. 2, p. 603. G.C. III. 

 12, p. 177. 



cc. Spine little if at all decurrent. 

 D. Fls. andfr. much as in the preceding. Not bulbiferous. 



21. americana, Linn. (A. altissima, Zumag. A. eu- 

 ropxa, Vis. A. ramdsa, Moench. A.spectdbilis, Salisb.). 



