122 CONTRIBUTIONS FROM THE NATIONAL, HERBARIUM. 



46. Agave samalana Trel. Trans. Acad. St. Louis 23: 142. 1915. 

 Guatemala ; type from Esperanza. 



Leaves glaucous, 15 cm. wide, (JO cm. long, with reddish or chestnut needle- 

 .shaped spine 3 to 4 mm. wide and 35 to 55 mm. long, and rather straight trian- 

 gular teeth 5 to 20 mm. apart and 1 to 3 or 5 mm. long, the nearly straight in- 

 tervening margin denticulate. 



47. Ag'ave lagrunae Trel. Trans. Acad. St. Louis 23: 143. 1915. 

 Guatemala ; type from AmatitlSn. 



Leaves very glaucous, 8 to 10 cm. wide, 40 cm. long, with garnet spine 3 to 5 

 mm. wide and 20 to 30 mm. long, and variously curved teeth 20 to 40 mm. 

 apart and 3 to 5 mm. long, these on rather prominent fleshy hummocks between 

 which the margin is straight. 



48. Ag-ave minarum Trel. Trans. Acad. St. Louis 23: 139. 1915. 

 Guatemala ; type collected near El Rancho. 



Leaves yellow-green, 6 cm. wide, 60 cm. long, with brown spine 5 mm. wide 

 and 45 mm. long, and detachable teeth 5 to 10 mm. apart, the intervening mar- 

 gin straight. 



49. Agave seemanniana ' Jacobi, Abh. Schles. Ges. Vaterl. Cult. 1868: 154. 

 1868. 



Nicaragua (type from Segovia) and Guatemala. 



Leaves glaucous, 8 cm. wide, 35 cm. long, with purplish brown spine 2 to 4 

 mm. wide and 20 to 30 mm. long, and triangular teeth 10 to 20 mm. apart and 



2 to 3 mm. long, the margin hollowed between them. 



50. Agave tenuispina Trel. Trans. Acad. St. Louis 23: 140. 1915. 

 Guatemala ; type from Cruz. . 



Leaves glaucous, 20 cm. wide, 70 cm. long, with dull brown needle-like spine 



3 mm. wide and 60 to 70 mm. long, and rather heavy curved teeth 20 to 40 

 mm. apart and 5 to 10 mm. long, the margin hollowed between them. 



51. Agave opacidens Trel. Trans. Acad. St. Louis 23: 140. 1915. 

 Guatemala ; type from Cruz. 



Leaves glaucous, 8 to 10 cm. wide, 75 cm. long, with dull brown spine 6 mm. 

 wide and 50 to 60 mm. long, and heavy, nearly straight teeth 20 to 50 mm. 

 apart and 5 to 8 mm. long, these on rather fleshy prominences. 



52. Agave lurida Ait. Hort. Kew. 1: 472. 1789. 



Veracruz ; type cultivated in Europe ; scarcely known except in cultivation. 



Leaves glaucous, rather thin and curved, with a slender spine 3 to 4 mm. 

 wide and 25 to 30 mm. long, and small teeth about 10 mm. apart and 3 mm. 

 long, these usually not on fleshy bases. 



53. Agave rasconensis Trel., sp. nov. 



Leaves rather thin and more or less outcurved, about 10 cm. wide and 75 cm. 

 long, gradually acute, glaucous, with needle-shaped, somewhat round-grooved, 

 glossy red-brown spine about 4 mm. wide and 30 mm. long, and broadly tri- 

 angular teeth 20 to 50 mm. apart and 6 mm. long, these on somewhat raised 

 prominences between which the margin is nearly straight; inflorescence about 

 8 meters tall, paniculate; flowers 90 to 95 mm. long, short-pediceled, somewhat 

 stipitate, the tube 12 to 15 mm. deep, scarcely half as long as the segments, 



* Berthold Seemann (1825-1871) was a native of Hanover, who from 1847 

 ti) 1851 was naturalist of H. M. S. Herald. In Mexico he collected in the states 

 of Sinaloa and Durango, and probably elsewhere. He collected also in Panama, 

 and published an extended account of his botanical discoveries. 



