STANDLEY TREES AND SHRUBS OF MEXICO. 127 



83. Ag-ave sobria T. S. Brandeg. Proc. Calif. Acad. II. 2: 207. 1899. 

 East-central Baja California ; type locality, mesas about Comondti. 



Leaves glaucous, about 60 cm. long, with chestnut or glaucous, narrowly 

 triangular, variously curved teeth 20 to 30 mm. apart and 8 to 10 mm. long, 

 the intervening margin more or less hollowed. 



84. Agave affinis Trel. Rep. Mo. Bot. Gard. 22: 56. 1911. 

 Eastern Baja California ; type locality, Concepcion Bay, 



Leaves glaucous gray-green, rough, 5 cm. wide, 50 cm. long, with somewhat 

 wavy, light brown or faded, nearly straight, narrowly triangular teeth 10 to 

 20 or 40 mm. apart and 5 to 7 mm. long, from low prominences between which 

 the margin is somewhat concave. 



85. Ag'ave brandegeei Trel. Rep. Mo. Bot. Gard. 22: 57. 1911. 

 Cape region of Baja California ; type from the mountains. 



Leaves grayish yellow-green, 10 cm. wide, 60 cm. long, with stout, conical 

 or acuminate, recurved, red-brown spine 4 mm. wide and 20 mm. long, and 

 gently upcurved, broadly triangular teeth 10 mm. apart and 2 mm. long, the 

 intervening margin straight. 



86. Agave margaritae T. S. Brandeg. Proc. Calif. Acad. II. 2: 206. 1889. 

 Islands of southwestern Baja California ; type locality, Magdalena Island. 

 Leaves green or transiently glaucous, acuminate, 6 to 10 cm. wide, 12 to 20 



cm. long, with somewhat undulate, needle-shaped, chestnut or fading spine 3 

 mm. wide and 25 mm. long, and narrowly triangular, curved teeth 10 mm. 

 apart and 6 to 8 mm. long, on low fleshy prominences. 



87. Agave connochaetodon Trel. Rep. Mo. Bot. Gard. 22: 58. 1911. 

 Southwestern Baja California ; type locality, Santa Maria Bay. 



Leaves somewhat glaucous light green, 6 cm. wide, 25 cm. long, with red or 

 drab, flexuous, needle-shaped spine 3 to 4 mm. wide and 40 to 50 mm, long, 

 and triangular, often much hooked teeth 15 to 20 mm. apart and 10 to 15 mm. 

 long, the intervening margin hollowed. 



Perhaps a form of the preceding with larger and peculiarly curved marginal 

 teeth. 



88. Agave roseana Trel. Rep. Mo. Bot. Gard. 22: 59. 1911. 

 Southeastern Baja California ; type locality, Espiritu Santo. 



Leaves glaucous gray-green, 15 cm. wide, 50 cm. long, with glaucous, pur- 

 plish brown or fading, tortuous, needle-shaped spine 3 to 4 mm. wide and 50 

 to 70 mm. long, and large, flat, broadly triangular, often much and diversely 

 curved teeth 30 mm. apart and 10 to 25 mm. long, on large fleshy prominences. 



89. Agave avellanidens Trel. Rep. Mo. Bot. Gard. 22: 60. 1911. 

 East-central Baja California ; type locality, Paraiso. 



Leaves long-acuminate, 11 cm. wide and 60 cm. long or^ more, Avith conical 

 wavy drab spine 5 mm. wide and 50 mm. long, and similarly colored, variously 

 curved, very broadly triangular teeth 25 to .50 mm. apart (sometimes with an 

 intermediate smaller one) and 10 mm. long, the intervening margin slightly 

 hollowed. 



90. Agave subsimplex Trel. Rep. Mo. Bot. Gard. 22: 60. 1911. 

 Islands of Sonora ; type locality. Seal Island, near Tiburon. 



Leaves very glaucous, 5 cm. wide, 15 cm. long, with nearly straight, light 

 gray, needle-shaped spine 3 mm. wide and 20 mm. loug, and purplish black or 

 red or fading, narrow triangular, variously curvetl teeth 10 to 20 mm. apart 

 and 5 to 10 mm. long, on fleshy prominences between which the margin is 

 nearly straight. 



