80 ADDISONIA 
coccinea Cavanilles. The genus has by many authors been 
referred back to Cotyledon, which it much resembles, but the 
true Cotyledons are natives of South Africa, with different flowers. 
Some of the species of the related genera Pachyphytum, Oliveranthus, 
Villadia, Courantia, Urbinia, Dudleya, Gormania, and Stylophyl- 
lum, all of Mexico and the western United States, have also been 
called Cotyledons by various authors. 
Nearly all the species of Echeveria respond readily to dry and 
relatively cool greenhouse conditions, and are easily propagated 
and increased by cuttings. The rosettes of leaves are beautiful, 
and the red, orange, or yellowish flowers are in many species very 
showy. 
N. L. BRITTon. 
EXPLANATION OF Pate. Fig. 1.—Flowering stem. Fig. 2.—Branch with 
whorl of leaves. Fig. 3. ccgilowig heme Fig. 4.—Sepal. Fig. 5.—Petal, ex- 
terior view. Fig. 6.—Petal, interior view. Fig. 7.—Pistil. 
