ROSE—MEXICAN AND CENTRAL AMERICAN PLANTS, 285 
Mexican plants recently introduced by J. N. Rose. —No, 3—Continued. 
Name. Catalogue Remarks. 
CRASSULACEAE—continued. 
Villadia cucullata Rose .......--)------------ Flowered in cultivation. 
Villadia stricta Rose.....-----.- 512 | Flowered in cultivation. 
Villadia nelsoni Rose ......----- 691 | Flowered in cultivation. 
Villadia ramosissina Rose . .---- 692 | Flowered in cultivation. 
CACTACEAE, 
Cereus Sp. ..2-2 2002-2 eee ee eeee 785 
Cereus Sp-------.--+------------ 895 
Cereus Sp.----.---------------- 872 
Echinocactus sp .....-----+------|--------6--- 
Echinocactus sp ......-...------ 495 
Echinocactus sp .....-.----+--+-- 908 
Echinocactus sp ...---------+--- 740 
Mamillaria sp.......----+-+--+--- 821 
Mamillaria sp...-....2.--.2---- 822 
Mamillaria sp......-2----------- 830 
* Mamillaria pringlei (Coult.) .... 895 
Mamillaria sp....-.-..--.-+----- 858 
Mamillaria sp..-..---.--------- 225 
Mamillaria conimamma Link .. - - 203 | June, 1901. 
Mamillaria carnea Zuce.-.-.---- | 977 | Flowered in 1904. 
MISCELLANEOUS SPECIES. 
Agave Sp ..-------.------------ 778 
Agave intrepida Greenm ....---- | 849 
Furcraea sp ..----------------- | 749 
Prochnynanthes virescens 8, Wats. 874 | Flowered in September, 1904. 
Heeria elegans Schlecht. ......--|--------+---- Flowered in April, 1904. 
Sprekelia formosissima Herb... -- ‘ 813 | Flowered in April, 1904 and 1905. 
Polyanthes geminiflora Rose... . - 913 | Flowered in July, 1904. 
Tradescantia crassifolia var ...-- 891 | Flowered in October, 1904. 
Tsochalis linearis R. Br.?. 2... 312 | Flowered in October, 1904. 
Among these introduced plants attention is called to the following: 
(1) The species of Crassulaceac. For the past three years I have 
given a good part of my time to the study of the Crassulaceae, during 
which period there has been gathered in Washington probably the 
choicest collection of this kind ever brought together. The total 
number of pots on hand in September, 1904, was 1,075. This does 
not, of course, show the richness but the size of the collection. At one 
time in 1904 ten of the twelve species of Stylophyllum were in bloom 
