138 COXTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



minute or no teeth it is var. suMntegra {A. kerchovei inermis Baker, Gard 

 Chron. n. ser. 7: 527. 1877). 



146. Ag-ave potrerana Trel., sp. nov. 



Leaves falcately ascending, triangular, rigid, transiently glaucous, without 

 ventral stripe or dorsal lines, 5 to 6 cm. wide. 30 cm. long, with gray spine 

 3 mm. wide and 25 mm. long, and narrowly triangular, rather straight teeth 

 commonly 10 to 15 mm. apart and 8 to 4 mm. long, the nearly straight connect- 

 ing horny margin ahout 1 mm. wide ; flowers about 50 mm. long, the pt'rianth 

 segments and tube about equal ; capsules oblong-pyriform, 10 to 12 mm. broad, 

 30 to 35 nnii. long ; seeds 3 mm. wide, 4 mm. long. 



Chihuahua ; type, in herbarium of the Missouri Botanical Garden, from 

 Potrero Peak, Pringle 302. 



147. Agave kerchovei Lem. 111. Hort. 11: G4. 1864. 

 I'uebla ? ; type cultivated in Europe. 



Leaves uniformly spreading or ascending, triangular, rigid, gray-green, 7 to 

 10 cm. wide, 40 to 50 cm. long, with gray spine about 5 mm. wide and 50 to 

 70 mm. long, and triangular teeth 30 to 50 or even 100 ram. apart and 10 to 

 20 mm. long, each sometimes with an adjoining denticle, the straight connect- 

 ing margin 2 to 3 mm. wide ; spike extremely compact. 



148. Agave inopinabilis Trel., sp. nov. 



Leaves falcately spreading or ascending, oblong or gradually narrowed from 

 base to point, gray-green or bluish-green, somewhat glaucous when young, 4 to 

 6 cm. wide, 100 cm. long, with dull brown or fading spine 5 mm. wide and 

 50 mm. long, and large, flat, brown, hazel-colored, or dead-gray, triangular, 

 often doubled teeth commonly 50 to 100 mm. apart and 10 to 30 mm. long, 

 the connecting margin 2 to 4 mm. wide; capsules oblong, 8 to 12 mm. wide. 

 12 to 30 mm. long; inflorescence rather lax; flowers claret-colored, 35 nun. 

 long, the perianth segments almost distinct ; seeds 2 mm. wide, 4 mm. long. 



Puebla : type, in the herbarium of the Missouri Botanical (harden, from Te- 

 huacsin, Trelcase, in 1903. 



149. Agave convallis Trel., sp. nov. 



Leaves uniformly spreading, light green, G cm. wide, 50 cm. long, with gray 

 spine 4 mm. wide and 25 mm. long, and heavily triangular, brown-tipped, some- 

 what recurved teeth 50 to 60 mm. apart and 6 to 10 mm. long, the nearly 

 straight intervening border about 1 or 2 mm. wide but lenticularly widened 

 beneath each tooth ; inflorescence 3 to 4 meters tall ; flowers creamy or bronzed, 

 35 to 40 mm. long, with very short tube. 



Oaxaca ; type, in herbarium of the Missouri Botanical Garden, from El 

 Parian, Treleasc 4, in 1905. 



150. Agave expatriata Rose, Rep. Mo. Bot. Gard. 11: 82. 1900. 

 Region ? ; type cultivated at Washington. 



Leaves uniformly spreading, light green, 6 to 9 cm. wide, 75 cm. long, with 

 slender spine 15 to 25 mm. long, and triangular, unequal, variously curved 

 teeth 10 to 20 mm. apart and 5 to 10 mm. long, the intervening straight border 

 about 1 mm. wide. 



151. Agave dissimulans Trel., sp. nov. 



Leaves vndely and flaccidly spreading or recurved, glaucous, more or less 

 tinged with red, 7 cm. wide, 80 to 100 cm. long, with gray spine about 5 mm. 

 wide and 50 mm. long, and heavily triangular, somewhat curved teeth 15 to 30 

 mm. apart and 6 to 15 mm. long, the intervening straight border 1 or 2 mm. 

 wide; inflorescence 2 to 3 meters tall; flowers whitish, glaucous, 30 mm. long, 

 with very short tube; capsules 12 mm. broad, 20 to 25 mm. long. 



