126 C'OXTRIBUTIOXS FROM THE NATIONAL HERBARIUM. 



slender recurved teeth 20 to 25 mm. apart and 6 to 7 mm. long, the intervening 

 margin nearly straight ; filaments inserted in the throat of the perianth tube. 



74. Agave aurea T. S. Brandeg. Proc. Calif. Acad. II. 2: 207. 1889. 

 Eastern Baja California ; type locality, Purlsima. 



Leaves gray-green, acuminate, 10 to 15 cm. wide, 75 to 100 cni. long, with 

 conical or acuminate chestnut spine 3 to 5 mm. wide and 20 to 30 mm. long, 

 and very unequal, triangular, often upcurved teeth 10 to 20 mm. apart and 

 4 to 8 nun. long, from fle.shy prominences. 



75. Agave promontorii Trel. Rep. Mo. Bot. Gard. 22: .50. 1911. 

 Cape region of Baja California ; type locality, Sierra de la Laguna. 

 Leaves rather glaucous ; spine more acuminate and curved. 



76. Agave dentiens Trel. Rep. Mo. Bot. Gard. 22: 51. 1911. 

 Islands off the Sonora coast ; type from San Esteban Island. 



Leaves glaucous gray-green, 3 to 5 cm. wide, 30 to 50 cm. long, with ash- 

 colored or brown-tipped .spine 3 to 4 mm. wide and 20 to 30 mm. long, and 

 minute whitish friable teeth 5 to 10 mm. apart and scarcely 1 mm. long, the 

 margin nearly straight. 



77. Agave disjuncta Trel. Rep. ]\Io. Bot. Gard. 22: 51. 1911. 

 Islands of Baja California ; type locality, San Benito Island. 

 Differs from the preceding in its firmer browner teeth. 



78. Agave deserti Eugelm. Trans. Acad. St. Louis 3: 310, 370. 1875. 

 Colorado Desert of southern California (type locality east of San Felipe), 



and possibly adjacent Baja California. 



Leaves gi'ay, slightly granular, 5 cm. wide, 15 to 30 cm. long, with brown or 

 fading, needle-shaped spine 3 mm. wide and 30 mm. long, and rather friable 

 teetli 5 to 10 mm. apart and 3 to 4 mm. long, from rather prominent fleshy 

 hummocks; ovary flask-shaped, 15 to 20 mm. long, equaling the perianth. 



79. Agave consociata Trel. Rep. Mo. Bot. Gard. 22: 53. 1911. 



Southern California and adjacent Baja California ; type locality, San Felipe, 

 California. 



Leaves gray, 6 cm. wide, 20 to 30 cm. long, with brown spine 3 to 4 mm. 

 wide and 25 to 30 mm. long, and triangular teeth 10 to 30 mm. apart and 

 4 to 8 mm. long, the intervening margin somewhat hollowed; ovary fusiform, 

 25 to 30 mm. long, exceeding the perianth. 



80. Agave pringlei Engelm. ; Trel. Rep. Mo. Bot. Gard. 22: 54. 1911. 

 Baja California ; type from the central plateau. 



Leaves gray, 5 cm. wide, 15 to 40 cm. long, with drab or brown-tipped spine 

 3 to 5 mm. wide and 25 to 35 mm. long, and easily detachable triangular teeth 

 15 to 25 mm. apart and 3 to 5 mm. long, the intervening margin nearly straight. 



81. Agave cerulata Trel. Rep. Mo. Bot. Gard. 22: 55. 1911. 

 Central Baja California; type locality, Calmalll. 



Leaves gray or glaucous, somewhat rough, 2 to 4 cm. wide, 30 cm. long, with 

 gray-brown spine 2 to 4 mm. wide and 30 mm. long, and friable teeth 10 to 15 

 or 25 mm. apart and 3 mm. long, from fleshy marginal hummocks. 



82. Agave carminis Trel. Rep. Mo. Bot. Gard. 22: 55. 1911. 

 Islands of eastern Baja California ; type locality. Carmen Island. 



Leaves grayish, smooth, 5 cm. wide, 30 to 40 cm. long, with needle-shaped, 

 light, brown spine 2 mm. wide and 35 nnn. long, and firm, variously curved, 

 narrowly triangular teeth 20 to 30 mm. apart and 5 mm. long, from low fleshy 

 prominences between which the margin is nearly straight. 



