STUDIES OF MEXICAN AND CENTRAL AMERICAN 
PLANTS—NO, 3. 
By J. N. Roser. 
INTRODUCTORY NOTE. 
These studies are a continuation of those published in the fifth vol- 
ume of these Contributions and are based chiefly on the collections 
there referred to. 
It embraces also a part of the results of the writer’s second and third 
journeys in Mexico. My second journey was made in company with 
Dr. Walter Hough, of the United States National Museum, and extended 
over a period of more than two months (May to July 15,1809). At 
this time collections were made in the States of Chihuahua, Aguas 
Calientes, Mexico, Jalisco, Puebla, Vera Cruz, Hidalgo, and Oaxaca. 
The third journey was made in company with Robert Hay, then of 
this Division, and extended over a period of two months (June 26 to 
August 31, 1901). Collections were made in most of the same States 
as were visited on the second journey. Mount Orizaba and Popoca- 
tepetl were both visited and extensive collections made on them. 
None of the plants from these mountains are mentioned herein, as it 
is intended to present them in a paper on the high-mountain flora of 
Mexico. 
The herbarium material collected during the second and third jour- 
neys embraces more than 2,200 numbers (Nos. 4201-6416). 
Besides the herbarium specimens many consignments of bulbs, 
roots, and seeds were sent to Washington, some going to the National 
Botanic Garden, and others to the Department of Agriculture. 
Most of these have lived and a considerable number have flowered, 
as will be seen from the accompanying table. 
Mr. Rose’s plants which have flowered in Washington. 
———— 
Catalogue 
Name. Date of flowering. number. 
Argemone platyceras Link & Otto ...----------+---------- July 6, 1900... 730 
Argemone ochroleuca Sweet ...-+++-------++ 2022252525207 1900......---- | 4552 
Argemone grandiflora Sweet ....++---++---202e2222 252500 Aug. 15, 1900... 4884 
Begonia gracilis 1. B. K ...22c2+2eeeeeeeeeeec eset eters: Oct. 15,1901... 6897 
Bomaria ovata Mirbel......-------+-+---+------- 222222 eee Dec., 1899...) 4607 
Crinum sp. NOV ....--.--- 20-2 ee eee eect teeter terre | Aug., 1900 and 5209 
| 1902. | 
