126 MISSOURI BOTANICAL GARDEN. 
The species was first described by Salm Dyck in 1834. 
It was afterward (1862) described by Sir William Hooker 
as Agave glaucescens in the Botanical Magazine, and is 
sometimes found in cultivation as A. spectabilis. It has 
been several times illustrated as will be seen from the ref- 
erences appended.* 
The plant was introduced into cultivation about 1834. 
It flowered first at Kew in 1861, and has flowered several 
times since. It has been widely distributed in gardens, and 
will doubtless be frequently found flowering in the future. 
The above account was published in part in Garden and 
Forest for 1897. . 
AGAVE POTATORUM,. 
Our specimen bloomed in June after I had left the city 
for the summer and, therefore, the flowers were not exam- 
ined. The leaves correspond fairly well with the descrip- 
tion. This is the only time this species has flowered here. 
It flowered at Kew in 1894 and in Paris about 1875. 
Our plant was still alive February 1, 1898, but it is grad- 
ually dying and the species is doubtless monocarpic, as has 
been noted by Watson. 
The leaves were 2 to 2} feet long at the widest point. 
The peduncle was 6 feet long excluding the inflorescence, 
which was only 1} feet long with very short branches. 
EXPLANATION OF PLATES OF AGAVE. 
Plate 29. Agave Washingtonensis,— habit, reduced. 
Plate 30. Agave Washingtonensis,— a, Leaf, } natural size,— b, c, sec- 
tions of same, natural size,— d, flower, natural size. 
Plate 31. Agave attenuata,— habit, reduced. 
* The most important references are the following: Agave attenuata 
Salm Dyck, Hort. Dyck. 303. 1834. — Rev. Hort, 1875: 149. f. 31, 32.— 
Gard. Chron. ii. 8: 748. 1877.— Garden and Forest 10: 95. 1897. 
Agave glaucescens Hook. Bot. Mag. 88: ¢. 5333. 1862.— Gard. Chron. 
fi. 2: 219. f. 53, 55. 1887; iii. 8: 560. 1890; iii. 17: 457. f. 63, 64. 
1895. 
