NKOMAMMILLARI A . 



143 



The species is known only from the single collection recorded above. It grows on 

 stony hills in a very arid part of Queretaro. It is very inconspicuous and is easily over- 

 looked in the field. 



110. Neomammillaria wildii (Dietrich). 



Mammillaria wildii Dietrich, Allg. Gartenz. 4: 137. 1836. 



Mammillaria wildiana Otto in Pfeiffer, Enum. Cact. 37. 1837. 



Mammillaria wildiana compacta Hortus in Forster, Handb. Cact. ed. 2. 258. 1885. 



Mammillaria wildiana crislata Hortus in Forster, Handb. Cact. ed. 2. 258. 1885. 



Cactus wildianus Kuntze, Rev. Gen. PI. i: 261. 1891. 



Cylindric to globose, cespitose at base ; axils of tubercles bearing rose-colored hairs and bristles ; 

 tubercles slender, elongated, 8 to 10 mm. long, obtuse, green or somewhat rose-colored at base; 

 young areoles tomentose; spines all pubescent; radial spines 8 to 10, 8 mm. long, setiform, white; 

 central spines 4, yellow, one of them hooked; flowers white, 12 mm. in diameter; inner perianth- 

 segments acuminate; stigma-lobes 4 or 5, straw-colored; fruit clavate, red. 



Figs. 156 and 157. — Neomammillaria solisii. 



Type locality: Mexico. 



Distribution: State of Hidalgo, Mexico, according to Schumann. 



We have had this plant growing for a number of years, obtained from other collectors, 

 but we do not know its natural habitat. It sprouts freely and new plants are easily 

 started. Dr. Rose examined a specimen, labeled Mammillaria wildii, in the Botanical Gar- 

 den at Halle in 191 ; we have a cluster of spines and a flower of that plant. 



Mammillaria glochidiata aurea (Pfeiffer, Enum. Cact. 37. 1837), although never 

 described, is referred usually as a synonym of this species. The two varieties of Mam- 

 mallaria wildii, cristata and compacta, are listed but not described by Schelle (Handb. 

 Kakteenk. 251. 1907), the latter being offered for sale by Grassner in his Kakteen for 1914 

 as form cristata. 



The two varieties, Mammillaria wildiana major and M. wildiana spinosior, were given 

 by Walpers (Repert. Bot. 2: 270. 1843) as synonyms of M. wildiana. The variety 

 monstrosa Cels was given by Riimpler (Forster, Handb. Cact. ed. 2. 258. 1885) as a 

 synonym of M. wildiana cristata. 



Illustrations: Bliihende Kakteen 2: pi. 64; Monatsschr. Kakteenk. 32: 103, as Mam- 

 millaria wildii; Grassner, Haupt-Verz. Kakteen 1912: 27, as M. wildii cristata. 



Plate XIV, figure 8, shows a plant from the Missouri Botanical Garden which flowered 

 in the New York Botanical Garden, April 25, 1913. Figure 155 is reproduced from the first 

 illustration cited above. 



