ROSE—MEXICAN AND CENTRAL AMERICAN PLANTS. 3 
My collections, while rich in new species and typonyms, contain 
also considerable material of horticultural interest. 
Among the new species which deserve special mention in this con- 
nection are the following: 
(1) A large white-flowered Crinum found in a swamp near Cuerna- 
vaca. This species was collected in 1899 and has flowered three times 
in the National Botanic Garden. One fine bulb has been sent to Kew. 
(2) Two species of Polianthes. These were both collected in the 
market place at Guadalajara where they are brought in by the Indians 
and sold under the name of **nardo.” One has long slender flowers, 
much longer than those of its relative the well-known tuberose, while 
the other has small flowers but produced in dense clusters. Both 
species deserve a place in every first-class bulb collection. They will 
be found described elsewhere in this paper. 
(3) Several species of Echeveria. Although many species of this 
genus have been introduced into cultivation from Mexico several choice 
ones still remain. Two of those which I brought back are very promis- 
ing. ‘These will be described in a succeeding paper. 
Scarcely less interesting than the new species are several rediscoy- 
eries of horticultural plants. 
(1) First that of //eeria cheyans. This isa dainty little trailer form- 
ing a dense carpet and it may perhaps be profitably employed in this 
inanner. Living material was sent to the Garden at Museo Nacional, 
city of Mexico, and to the Department of Agriculture, Washington, 
D.C. The latter material has not flowered or flourished very well, 
but it is hoped that better results will be obtained next year. This 
species is very unlike the various species of Heeria now in cultivation 
and in the writer’s opinion is probably not congencric with them. 
(2) Four species of Argemone. The most interesting of these is A. 
platyceras. As ix shown elsewhere, this is not the so-called Argemone 
platyceras of the United States, but probably the true form. ‘Phe plant 
grows in mountainous regions and will probably live throughout the 
year in our Northern States. The plant seeds freely and young self- 
sown plantlets in Washington were still alive at Christmas time, 
although growing in the open. Argemone grandiflora, although well 
known in cultivation, is rave in collections. Mr. Prain, who has 
examined all the larger herovaria of Europe, states that he found but 
a single specimen which was not from cultivated material. I found 
this species very common in the State of San Luis Potosi, where it 
was seen along the Tampico branch of the Mexican Central Railway 
fora stretch of 50 miles. A. meatcana and A. ochroleuca have both 
been flowered in the S3otanic Garden. 
(3) Various species of Lupinus. A great many kinds of lupine 
were collected in entral Mexico, but the season was not the proper 
one to gather seed. I expect to collect seed of several of these spe- 
