Trelease—The Agaveae of Guatemala. 147 
27/ AGAVE AMERICANA LL. 
Leaves lanceolate, narrowly so in age, usually hooked 
toward the end, gray-green: spine stoutly conical, gen- 
tly recurved, narrowly grooved below the middle, scarcely 
decurrent: teeth narrowly triangular, hardened into the 
tops of fleshy prominences between which the margin is 
more or less concave. 
The most frequently planted Agave, in Guatemalan 
parks represented by the white- or yellow-margined va- 
riety, var. marginata. 
44S Acave prcta Salm. 
Differing from A. americana marginata in its darker 
green leaves and slender acicular straight spine. 
he unvariegated form of this, which occurs about 
the Mediterranean from seeds of the variegated form, 
has been called A. ingens by Mr. Berger: it is not known 
elsewhere. 
The variegated form is sparingly cultivated in Guate- 
mala,—e. g. about the railroad yards in the capital. 
SYNOPSIS OF GUATEMALAN FURCRAEAS, 
Leaves rough-margined but without large teeth, glau- 
cous, striate-roughened. Caulescent.—SrrRvuLaTAE. 
Tall tree. Flowers pubescent. F. longaeva, 
Scarcely 2 m. high. Flowers glabrous. F. quicheensis. 
Leaves smooth-margined, toothed, green or little glau- 
cous, not striate. Often acaulescent.—EuFuRCRAEA. 
Teeth usually confined to the lower third of leaf. F. samalana, 
Toothed throughout. 
Teeth red or brown, rather distant. Leaves flattish. 
Fr. ee 
“Teeth blackish, close together. Leaves very conca 
ae 
