NEOMAMMILLARIA. 87 
Mammiullaria staurotypa (Forster, Handb. Cact. 221. 1846), credited to Scheidweiler 
by Schumann and referred by him as a synonym of M. caput-medusae, seems never to have 
been described but may belong here. 
The two varieties of Mammillaria caput-medusae, tetracantha and hexacantha, given 
by Salm-Dyck (Cact. Hort. Dyck. 1844. 10. 1845) are without description. The first 
was afterwards described by Labouret. 
Illustrations: De Candolle, Mém. Cact. pl. 8; Forster, Handb. Cact. ed. 2. 344. f. 36; 
Schumann, Gesamtb. Kakteen 589. f. 95; Dict. Gard. Nicholson 4: 565. f. 38; Suppl. 518. 
f. 556; Watson, Cact. Cult. 175. f. 70, as Mammiullaria sempervivi; Schelle, Handb. Kakteenk. 
270. f. 192; Succulenta 5: 51, as MV. caput-medusae. 
Figure 79 is a reproduction of the first illustration cited above. 
27. Neomammillaria obscura (Hildmann). 
Mammillaria obscura Hildmann, Monatsschr. Kakteenk. 1: 52. 1891. 
Solitary, depressed-globose, blackish green; axils woolly; tubercles arranged in 13 and 21 spirals, 
angled, stout, woolly in their axils but not setose; radial spines 6 to 8, subulate, white, unequal, the 
upper ones shorter than the lower; central spines 2 to 4, the lower one slightly curved, black; flowers 
small, yellowish white. 
Type locality: Mexico. 
Distribution: Mexico, but range unknown. 
The plant is known to us only from description and illustration. 
Seeds of this species were introduced into Germany from Mexico about 1885 by Mr. 
Droege and flowers were obtained in 1891. 
The earlier name, Mammillaria obscura Scheidweiler (Forster, Handb. Cact. 213. 
1846), but used only as a synonym and for some other plant, does not interfere with our 
present use of the name. co . 
Illustration: Monatsschr. Kakteenk. 1: facing 52, as Mammillaria obscura. 
28. Neomammillaria crocidata (Lemaire). 
_2Mammillaria crocidata Lemaire, Cact. Alig. Nov. 9. 1838. 
Mammiillaria webbiana Lemaire, Cact. Gen. Nov. Sp. 45. 1839. 
Cactus crocidatus Kuntze, Rev. Gen. Pl. 1: 260. 1891. 
Cactus webbianus Kuntze, Rev. Gen. Pl. 1: 261. 1891. 
5 to 6 cm. in diameter; radial spines 6 or 7, dark brown or 
f tubercles in young plant densely woolly; flowers from axils 
12 to 14 mm. long; outer perianth- 
style, and stigma-lobes reddish; 
Plant globose or a little depressed, 
nearly black; central spines none; axils o 1 
of old tubercles near the top of plant, small, reddish purple, 
segments ciliate; inner perianth-segments acuminate; filaments, 
stigma-lobes 3 or 4; fruit not seen. 
Type locality: Mexico. 
Distribution: Central Mexico. 
Described here from plants collected by Dr. 
which flowered in August and September 1908, and a 
specimen has more spines than the original M. crocidata; it is also near M. carnea but with 
: igh. 
different colored stigma-lobes; its tubercles are about 6 mm. hig eS 
Schumann places this species near M. carnea and among the cylindric species, but 1t was 
originally described as depressed. bec. 
Mammillaria crocidata quadrispina Pfeiffer and Salm-Dyck, mentioned by Forster 
(Handb. Cact. 220. 1846) as a rare form and afterwards briefly described by Labouret 
(Monogr. Cact. 93. 18 ), may or may not belong here. ; 
Plate VII, figure . shows a flowering plant collected by Dr. Rose in Querétaro in 1906 
and painted in the New York Botanical Garden, September 5, 1911. 
Rose near Querétaro, Mexico, in 1906, 
d again in April 1909 (No. 1072). Our 
