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 1 6, 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. 



Fig. 95. — Neomammillaria evermanniana. 



41. Neomammillaria evermanniana sp. nov. 



Globose to elongate-turbinate, 5 to 7 cm. in diameter, lactiferous; tubercles closely set, terete, 

 nearly hidden under the numerous slender spines; axils of tubercles at first very woolly and setose; 

 spines white except at tip and there brown; radial spines 12 to 15 ; central spines 3, erect or nearly so; 

 fruit red, about i cm. long; seeds brown. 



Collected by Ivan M. Johnston on Cerralbo Island, Gulf of California, 192 1 (No. 4058)- 

 Mr. Johnston writes of it as follows : 



" I found it growing wedged in narrow dirt-filled cracks on the canyon side of the island. It is 

 quite common on this island, usually growing singly, but one cespitose mass with 19 unequal heads 

 was observed." 



