4 
Dr. Engelmann in his notes cited above mentions that the original 
plant of A. rigida, was, according to Miller, brought from Vera Cruz, 
but his own specimens were collected in Yucatan by Dr. Schott. He 
states that Dr. Perrine, and Dr. Schott independently studied and 
described in Yucatan this interesting plant, with its different forms and 
economic uses (Senate Doc. 300, Washington, March 12th, 1838; the 
be nishing the best quality, and the Sacci (Sacqui) with the largest 
“ quantity of fibre. umci, larger than the last, produces coarser 
re; j e fibre, but in smaller quantity ; Citamci, with 
ow leaves and poor fibre, stands probably nearest to the 
“ wild plant. Dr. Perrine mentions another variety, Istle, evidently 
“ the Ixtli of Karwinski, rnishing a fine fibre it 
nt; 
“* ing scape is cut off as soon as 4 feet high, when, evidently, auxiliary 
“ branches continue the growth of the plant, which is thus kept so 
n 
“ mostly straight, from a broad base 1-2 lines long, rather unequal, 
“ with smaller ones interspersed, brown ; terminal spine 1 inch 
“ long, 13 lines in diameter, straight, or often somewhat twisted, terete 
* scooped out at base 
“ bearing the uppermost teeth. Scape 12-15 feet high; flowers pale 
“ yellowish green, 24-21 inches long, perigone 16, tubes 6-7, lobes 9-10 
“ lines long ; stamens inserted about the middle of the tube, ‘ blood-red 
“ upwards,’ l-inch longer than the perigone; anthers 10-104 lines 
“ long; styles at last as long as stamens. 
* the bulbs on the same panicle, oval, over 2 inches long, 14 wide, very 
i short stipitate ; seeds uncommonly large, 44 lines high, with a ventral 
‘ find the hi 
y 
“ that the flowers of the Ixtli have been described ; * they id tify th 
“ plant with the old A. rigida, or at least the iloro didiee hel Chetan 
“ A. Karwinshii, Zucc., is probably the same thing, 
* This remark made by Dr. Engelmann in 1872 is, how. i 
The ixtliotdes form (Agave Izxtli) were fully diabol ind finer BRE 
Hooker, from a plant which flowered at Kew in 1871, (Bot. Mag. t. 5893.) at 
