STANDLEY TREES AND SHRUBS OF MEXICO. 135 



131. Agave celsii Hook, in Curtis's Bot. Mag. III. 12: pi. J,93Jt. 1856. 

 ? Agave brauniana Jacobi, Hamb. Gart. Zeit. 22: 216. 1866. 



? Agave thompsoniana Jacobi, Hamb. Gart. Zeit. 22: 262. 1866. 



? Agave smithiava Jacobi, Hamb. Gart. Zeit. 22: 263. 1866. 



? Agave humholdtiana Jacobi, Hamb. Gart. Zeit. 22: 264. 1866. 



San Luis Potosi ; type cultivated in Europe from an unrecorded locality. 



Leaves glaucous, 10 cm. wide, 30 to .45 cm. long, with slender weak spine 

 scarcely 1 mm. wide and 5 to 10 mm. long, and very irregular, close-set or con- 

 fluent, green teeth 5 to 10 mm. apart and 2 to 3 mm. long, a little horny at the 

 tip only. 



The four synonyms, based on specimens cultivated from about San Luis 

 Potosi, seem to refer to forms of this species with greener foliage; and .4. 

 rupieola Kegel, A. lamprochlora Jacobi, and A. perluckla Jacobi differ little. 



132. Agave m.icracantha Salm-Dyck, Bonplandia 7: 93. 1859. 



Hidalgo or Veracruz ? ; type cultivated in Europe from an unrecorded locality. 



Leaves gray-green, 8 to 12 cm. wide, 40 to 60 cm. long, with slender weak 

 spine and small close-set dark teeth, these sometimes almost suppressed. 



Nominal but closely related species cultivated in gardens from unrecorded 

 localities and evidently of this alliance, are A. albicans Jacobi, A. chloracautha 

 Salm-Dyck, A. bernhardii Jacobi. A. bouchei Jacobi, A. ha»eloffii Jacobi, ? .4. 

 martiana Koch, A. mitis Salm, A. muilmanni Jacobi, A. oblongata Jacobi ; and 

 A. wallisii Jacobi, said to be from Colombia. 



133. Agave pendula Schnitts. Zeitschr. Gartenb. Ver. Darmstadt 6: 7. 1857. 

 Agave aloina Koch, Wochenschr. Ver. Beford. Gartenb. 3: 37. 1860. 



Agave sartorii Koch, Wochenschr. Ver. Beford. Gartenb. 3: 37. 1860. 



Agave noackii Jacobi. Hamb. Gart. Zeit. 22: 261. 1866. 



Agave rvbrocincta Jacobi, Abb. Schles. Ges. Vaterl. Cult. 1868: 1.53. 1868. 



Agave caespitosa Tod. Hort. Panorm. 1: 32. 1876. 



Veracruz; type cultivated in Europe, but collected at El Mirador, Huatusco. 



More or less caulescent, the trunk sometimes 60 cm. tall ; leaves deep green 

 with paler median stripe above, about 8 cm. wide and 100 cm. long, with 

 scarcly pungent end and minute brown teeth 5 mm. apart and 1 mm. long; 

 inflorescence nodding. 



134. Agave polyacantha Haw. Rev. PI. Succ. 35. 1821. 



Agave densiflora Hook, in Curtis's Bot. Mag. III. 13: pi. 5006. 1857. 



1 Agave cliiapensis Jacobi, Hamb. Gart. Zeit. 22: 213. 1865. 



Agave ottonis Jacobi, Hamb. Gart. Zeit. 22: 320. 1865. 



Agave salmdyckii Baker, Gard. Chron. n. ser. 8: 490. 1877. 



Veracruz (type cultivated in Europe, from an unspecified source, about 1800) 

 and Chiapas ?. 



Leaves green though transiently glaucous, 5 to 15 cm. wide. 25 to 60 or 100 

 cm. long, with dark firm spine 2 to 3 mm. wide and 15 mm. long, and rather 

 small close-set brown teeth 3 to 5 or 10 mm. apart and 2 to 3 mm. long; spike 

 sometimes budding at tip and base. 



Species eAidently of this group, but of unrecorded habitat, are A. botterii 

 Baker, A. decaisneana Jacobi, A. engelmanni Trel., A. galeottei Baker, A. 

 giiedeneyri Houll., and A. narelliana Baker. 



Other less closely placed garden aloid species, supposedly from Mexico, are 

 A. ehrenbergii Jacobi, A. goeppertiana Jacobi, A. horizontaUs Jacobi, A. kewen- 

 sis Jacobi, A. lindleifi, Jacobi. A. melanacantha Lem., A. regia Baker, A. rudis 

 Lem., and A. rupieola Kegel. 



