NSOMAMMILL ARIA . 



103 



Solitary, cylindric or somewhat thicker above ; axils of tubercles setose ; tubercles 1 2 mm. long, 

 flattened dorsally, angled, pointed; spines 4, ascending, short, grayish with purplish tips; flowers 

 inconspicuous, reddish ; inner perianth-segments short-acuminate ; anthers white ; style white, longer 

 than the stamens; stigma-lobes 8, greenish; fruit unknown. 



Type locality: Near Oaxaca, Mexico. 



Distribution: Southern Mexico. 



This species was collected by Baron Karwinsky near Oaxaca City, about 1832. It 

 has been reported over a large area of central Mexico, but is doubtless much more restricted 

 in range. One small specimen from near the type locality was sent to Washington in 1909. 



Fig. 100. — Neomammillaria pyrrhocephala. 



Fig. ioi. — Neomammillaria polyedra. 



Mammillaria anisacantha Hortus first appeared as a synonym of M. polyedra anisa- 

 cantha Salm-Dyck (Cact. Hort. Dyck. 1844. 11. 1845) and then as a synonym of M. polyedra 

 laevior Salm-Dyck (Cact. Hort. Dyck. 1849. 17. 1850); neither of the varieties was here 

 described, but the latter was briefly characterized by Labouret. Mammillaria scleracantha 

 is cited from Monville's Catalogue of 1846 but we have not seen this publication; it does 

 occur as a synonym of M. polyedra scleracantha in Labouret's Monograph, p. 105. 



Illustrations: Martins, Nov. Act. Nat. Cur. 16: pi. 18; Bliihende Kakteen 2: pi. 112; 

 Schelle, Handb. Kakteenk. 271. f. 194, as Mammillaria polyedra. 



Plate XII, figure 5, shows the plant sent from the Berlin Botanical Garden in 1914 

 which flowered in the New York Botanical Garden on April i, 1918. Figure loi shows the 

 type plant, being a reproduction of the first illustration cited above. 



53. Neomammillaria conzattii sp. nov. 



Short-cylindric, 8 cm. high, sometimes branched at apex, dark green, very milky; axils of young 

 tubercles bearing abundant white wool and conspicuous white bristles; tubercles short, 4 to 5 mm. 

 long, somewhat angled; young spine-areoles woolly; spines 4 or 5, all radial, somewhat spreading, 

 brownish, the tips usually darker than the bases ; flowers opening in bright sunlight, white, campanu- 

 late, sometimes tinged with red, about 2 cm. long, the segments somewhat spreading, narrowly oblong, 

 the outer ones serrulate, apiculate; style pale green; stigma-lobes 3, white. 



Collected by C. Conzatti on Cerro San Felipe, Oaxaca, in 1907 and flowered in 1913 

 (type); collected again in 192 1 (No. 4140) and flowered in April 1922. 



Figure 104 is from a photograph of the plant collected by C. Conzatti in 192 1. 



