NOTES AND OBSERVATIONS. 161 
ings, p. 276, — published under the auspices of the Garden 
in 1877); Baker, in the Journal of the Linnean Society, 
xviii, p. 219, and Kew Bulletin of Miscellaneous Informa- 
tion, Jan. 1892, p. 7; and Watson, in the Proceedings of 
the American Academy, xiv, p. 251. Reference should be 
made to these papers, and to Professor Sargent’s Forest 
Trees of North America, p. 218, for the synonymy and 
bibliography of each species, since only the more recent 
figures are referred to here. The retention of varietal 
names for forms subsequently raised to specific rank would 
involve certain changes in the nomenclature, which are 
indicated under the species affected. 
No better general classification of the Yuccas that are 
actually known has been found than the following, which 
represents Engelmann’s views, except that by general con- 
sent Y. filifera has been raised to specific rank from a 
variety of Y. baccata, where Engelmann left it, while Mr. 
Brandegee has added Y. valida, from Mexico, and Baker 
has just added from the gardens of the Riviera Y. Han- 
burii, said to be from Rocky Mountain seed. 
From an examination of this enumeration of species, in 
connection with the accompanying plates and the figures 
cited, it will be seen that we are still unpossessed of a 
knowledge of the floral and fruit details of several species, 
while some of the figures drawn from dried specimens may 
be inaccurate in some degree; so that persons who have it 
in their power to secure faithful photographs or drawings 
from growing plants may materially contribute to a correct 
knowledge of this difficult group by supplying the deficien- 
cies, and they may further the same end by obtaining ripe 
seeds for cultivation in botanical gardens. 
SYNOPTICAL LIST. 
* Evyucca. — Styles stout, the connivent apexes forming a more or 
less developed central stigmatic cavity: filaments papillate. 
A. Sarcoyucca.— Fruit pendent, fleshy and indehiscent: ovules and 
seeds thick, marginless: albumen ruminated. 
18 
