179 
A specimen of the flowers and leaves was submitted to Dr. 
Wm. Trelease, Director of the Missouri Botanic Garden, at St. 
Louis, who is at present engaged in a study of this ae 
group, and the following is the report made by him upon t 
di furnished : 
is is a very repand form of Agave Palmeri, and seems to 
¢ what passed for typical A. Americana in the ‘Botany of the 
Boundary,’ though it, of course, has nothing to do with that species, 
This Boundary form, which I have myself followed out into the 
Pajarito Mountains west of Nogales, was at one time called 
A, callosa by Engelmann, in the herbarium, but the species 
seems to run through so large a range of leaf variation, with 
identical flower characters, that no one has ever felt the desirability 
of dividing the species as yet, and in view of my own experience 
with some of the Mexican species I should hardly feel it wise to 
0 so.” 
The accompanying illustrations, made from photographs, will 
illustrate the general form and appearance of the plant, but a few 
data as to color and size will aid in forming a proper conception 
of it. The flowering stem is seven or eight feet tall, of a red- 
purple color a a decided bloom. About fifteen inches of this 
stem is composed of the panicle, consisting of widely spreading 
branches about six inches long. The flowers, born in clusters 
of four or five at the end of the branches, are ge to three and 
a half inches long, including the long-exserted stamens; the 
perianth, with its erect lobes, is a greenish white while the 
filaments and anthers are of a brownish purple, the anthers being 
about three quarters of an inch long. The flower exhales a very 
unpleasant odor. 
The rosette at the bottom consists of about twenty oblong- 
elliptic leaves which are eight to ten inches long and two to two 
and a half inches wide at the middle; they are abruptly dilated 
below into a very broad clasping base, and terminate at the apex 
in a sharp stout spine one half to three quarters of an inch long. 
The margins are broken up into many teeth with rounded sinuses 
between, the teeth terminating in spines which are usually reflexed 
and sometimes one quarter of an inch long. 
