134 Tram. Acad. Sci. of St. Louis. 



SYNOPSIS OP GUATEMALAN AGAVES. 



Rather small plants with somewhat fleshy lanceolate to 

 obovate leaves and, so far as known, narrowly oblong 

 panicles with the flowers densely clustered at the ends 

 of their branches. — Indigenous. Guatemalenses. 

 Leaves relatively broad. 



Spine flat-grooved, with acute edges. 



Very tortuous or twisted, brown. A. tortispina. 



Nearly straight. 



Gray-brown; teeth heavy. A. pacliy centra. 



Chestnut; teeth slender. A. Hurteri. 



Spine involute-grooved; teeth small, often on flesby eleva- 

 tions. A. Seemanniana. 



Leaves relatively narrow. 



Spine involute-grooved, conical or acicular. 

 Teeth small. 



Leaves numerous, ascending. A. Thomasae. 



Leaves few, spreading. A. Deamiana. 



Teeth moderate, easily falling. A. minarum. 



Teeth large, brown. 



Spine long acicular. A. tenuispina. 



Spine heavily conical. A. opacidens. 



Spine nearly flat on the face. A. sicaefolia. 



Spine round-grooved. 



Teeth close together, chestnut. 



Slender-cusped from blue bases. A. Kellermaniana. 



Heavily triangular. A. samalana. 



Teeth widely separated, red-brown. A. lagunae. 



Rather large plants with fibrous sword-shaped leaves 

 and, so far as known, open panicles with the flowers 

 loosely grouped at the ends of their branches. — Cul- 

 tivated in hedges or for fiber. 



Spine short-conical. — Sisalanae. 



Leaves very glaucous, deeply concave. A. nivea. 



Leaves gray-green, nearly flat. A. sisalana, 



Spine heavy awl-shaped. — Tequilaxae. A. Donnell-Smithii. 



Large plants with fleshy lanceolate leaves and open pan- 

 icles with the flowers rather loosely grouped at the 

 ends of their branches. — Introduced. 



Leaves broadly oblanceolate, upcurved at tip. — Atroyirentes. 



Spine long-conical, narrowly grooved. A. tecta. 



Leaves elongated lanceolate, recurving. — Americanae. 



Spine stout-conical, recurved. A. americana. 



Spine acicular, straight. A. picta. 



