no THE CACTACEAE. 



Plate XII, figure i, shows a plant sent by C. Conzatti from Oaxaca, in 1921. Figure 

 no is from a photograph of the type specimen. 



62. Neomammillaria dealbata (Dietrich). 



Mammillaria dealbata Dietrich, Allg. Gartenz. 14: 309. 1846. 

 Cactus dealbatus Kuntze, Rev. Gen. PI. i: 260. 1891. 



Globose to short-cylindric, glaucous, more or less depressed at apex but almost hidden by the 

 many closely appressed spine-clusters ; axils of tubercles and young spine-areoles densel}^ lanate but 

 in age glabrate; radial spines about 20, white, short, appressed; central spines 2, much stouter and 

 longer than the radials, sometimes i cm. long, the upper ones often erect, white below, brown or 

 black at tip; flowers small, carmine; fruit clavate, red; seeds brown. 



Type locality: Mexico. 



Distribution: Central Mexico, especially on the pedregal about the City of Mexico. 



We have referred to this species a plant which is very common in the Valley of Mexico 

 and which is known in collections as Mammillaria peacockii. The name, first used by 

 Riimpler (Forster, Handb. Cact. ed. 2. 286. 1885), was given as a synonym of Mam- 

 millaria dealbata. It was offered for sale by Grassner as M. elegans dealbata (Monatsschr. 

 Kakteenk. February 1920). 



Illustration: Grassner, Haupt-Verz. Kakteen 1912: 23, as Mammillaria peacockii. 



Plate XII, figure 3, shows a plant from Mexico, sent to the New York Botanical Garden 

 in 1 9 II . Figure 1 1 1 is from a photograph of a plant sent by Dr. Reiche from the Valley of 

 Mexico in 1922. 



:--.-».--i^-fc 



Fig. 112. — Xeomammillaria haageana. Fig. 113. — Neomammillaria mundtii. 



63. Neomammillaria haageana (Pfeiffer). 



Mammillaria haageana Pfeiffer, Allg. Gartenz. 4: 257. 1836. 



Mammillaria diacantha Haage in Steudel, Nom. ed. 2. 2: 96. 1841. Not LemaLre, 1838. 

 Mammillaria haageana validior Mon\nlle in Labouret, Monogr. Cact. 54. 1853. 

 Cactus haageaniis Kuntze, Rev. Gen. PI. i: 260. 1891. 



Somewhat cespitose, the individual plants globose or somewhat elongated in age; axils slightly 

 woolly; radial spines about 20, radiating, white; central spines 2, a httle longer than the radials, 

 black; flowers small, carmine-rose. 



Type locality: Mexico. 



Distribution: IMexico, but range unknown. 



Pfeiffer (Enum. Cact. 26. 1837) refers here Mammillaria diacantha nigra which Haage 

 had listed in his Catalogue of 1836. Here Pfeiffer also refers M. perote (Allg. Gartenz. 4: 

 257. 1836) of gardens. 



Illustrations: Diet. Gard. Nicholson 2: 321. f. 509; Cact. Joum. i: 165; Knippel, 

 Kakteen f. 21; Forster, Handb. Cact. ed. 2. 284. f. 29; Watson, Cact. Ctalt. 163. f. 62; 

 ed. 3. f. 39; Schelle, Handb. Kakteenk. 262. f. 184; Riimpler, Sukkulenten 201. f. 114, as 

 Mammillaria Jiaageana. 



