ADDISONIA 61 
(Plate 31) 
A. SEDUM DIVERSIFOLIUM 
Diverse-leaved Stonecrop 
Native of central Mexico 
Family CRASSULACEAE ORPINE Family 
Sedum diversifolium Rose; Britton & Rose, Bull. N. Y. Bot. Gard. 3: 44. 1903. 
low, much branched scape sgpenens at the base and 
pac Oo 
el 
long, weak, glabrous, pekiie 3 cattered lea aves. eaves are 
spreading, pale yellow petals twice as long as the sepals. The ten 
sta than the petals. The carpels, five in 
number, are somewhat spreading. 
This species is known only from the single collection made near 
Tultenango, State of Mexico, Mexico, in 1901, by J. N. Rose, 
through whom it was obtained by the New York Botanical Garden. 
It is one of the many interesting new species of Sedum which have 
been discovered in Mexico in recent years, and which are now 
Ses in the collections of the New York Botanical Garden. 
There are about two hundred and fifty species in the genus 
Sedum, deh mainly in temperate and cold regions, in both 
the Old World and the New. They grow largely in dry or semi-arid 
situations, and are abundantly represented in Mexico and the parts 
of the United States adjacent thereto. 
J. N. Rose. 
EXPLANATION OF PLATE. Fig. 1—Flowering plant. Fig. 2.—Carpels. 
B. SEDUM HUMIFUSUM 
Humble Stonecrop 
Native of central Mexico 
Family CRASSULACEAE ORPINE Family 
Sedum humifusum Rose, Contr. U. S. Nat. Herb. 13: 298. pl. 55. 1911. 
A low creeping perennial, forming a dense moss-like carpet, and 
sending off hundreds of short branches, each of which bears a 
