NEOMAMMILLARIA. 97 
Schumann described the plant in some detail, but apparently confused it with another 
species, possibly Mammillaria karwinskiana, inasmuch as he reported it from Oaxaca as 
well as from Guatemala. He referred here as a synonym M. viridis Salm-Dyck (Cact. 
Hort. Dyck. 1849. 16. 1850), which may be the Mexican element. 
40. Neomammillaria standleyi sp. nov. 
Plants usually solitary, nearly globular, often 10 cm. in diameter, pale green, densely covered 
with spines; axils of tubercles containing white bristles, the flowering and fruiting ones filled with 
dense white wool; radial spines about 16, slightly spreading, white except the dark tips; central spines 
4, longer and stouter than the radials, porrect, reddish brown; flowers rather small, about 12 mm. 
long, purplish; inner perianth-segments oblong, entire; filaments pale; stigma-lobes green; fruit 
scarlet, 12 to 16 mm. long; seeds brownish. 
Collected by Rose, Standley, and Russell on rocks in the Sierra de Alamos, Sonora, 
Mexico, March 14, 1910 (No. 12849). 
It is common in dry stony places above Alamos, where both living and herbarium 
specimens were obtained, and is an attractive plant flowering freely in cultivation. 
The plant is named for Paul C. Standley of the U. S. National Museum. 
Figure 93 is from a photograph of the type specimen which flowered in Washington. 
Fic. 95.—Neomammillaria evermanniana. 
41. Neomammillaria evermanniana sp. nov. 
Globose to elongate-turbinate, 5 to 7 cm. in diameter, lactiferous ; tubercles closely set tere 
nearly hidden under the numerous slender spines; axils of tubercles at I rst very erect _ nearly So. 
spines white except at tip and there brown; radial spines 12 to 15, central spines 3, 
fruit red, about 1 cm. long; seeds brown. 
Collected by Ivan M. Johnston on Cerralbo Island, Gulf of California, 1921 (No. 4058)- 
Mr. Johnston writes of it as follows: 
“TI found it growing wedged in narrow dirt-filled 
quite common on this island, usually growing singly, 
was observed.” 
cracks on the canyon side of the island. It is 
but one cespitose mass with 19 unequal heads 
