4 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
cies for distribution on my next visit to that region. Among the most 
promising are MELICUNUS, MONTANMUS, mag inatuss clegans, and bakers. 
(4) Several species of Cotyledon or better Echeveria.  Acheveria 
glauca and A. secunda were collected wild. These two are certainly 
specifically distinct. A. racemosa (12. lurida) was obtained at its type 
locality. This species has not recently been in cultivation. It forms 
dense rosettes of bronzed leaves and may prove a valuable bedding 
plant. Cotyledon parviflora and several closely related species were 
collected. These are too insignificant to be of much horticultural 
interest. They are, however, so very different both from Echeveria 
und Cotyledon that no one who has seen them growing would protest 
against their separation as a new gencric type. 
(5) Ampelocissus acapulcensis. This plant, first described by Kunth 
asa true Vitis, is known to the Mexican to-day under the popular 
name of uva or grape. It differs strikingly from all our true grapes 
in having a herbaceous stem which dies down to the ground each year. 
It must possess an enormous root, as it produces vines of great length. 
In my plants, grown from seed, a cluster of fleshy roots somewhat 
similar to sweet potatoes is formed at the end of the first year. The 
fruit is borne in large bunches sometimes a foot long. ‘The individual 
grapes, wine-colored when ripe, are about the size of the common fox 
grape of the Eastern United States, sometimes larger, even three- 
fourths of an inch in diameter. Seeds were sent to Washington and 
turned over to Mr. George W. Oliver of the Department of Agricul- 
ture, who now has a number of plants. He has also made some suc- 
cessful grafts upon Vitis ainéfera, but it is too early to predict any 
definite results. The Mexicans about Yautepec, State of Morelos, 
bring the fruit into the market places during May, June, and July, 
selling it under the name of ‘‘uva sylvestra.” From it a kind of 
“dulce” is made. Mr. C. G. Pringle called my attention to this vine, 
and it was through his assistance that I was able to procure material. 
In the first of these Studies I published a description of J/a/naviseus 
lanceolatus, calling attention to the fact that we had living plants in 
the greenhouse of the Department of Agriculture. From one of these 
plants a colored drawing has been made, which forms the frontispiece 
of this report. Numerous cuttings have been made, and that Depart- 
ment will be able to furnish a limited number of plants to botanical 
gardens which apply for them. In Washington this species begins to 
flower about the Ist of January and soon afterwards is covered with a 
mass of flowers. 
It is often desirable to know the exact specimens from which an 
illustration has been made. For this reason I have compiled here all 
necessary information in this regard for the illustrations used in this 
report. 
