—_— 
CORYPHANTHA. 27 
“Flowers white, large for the size of the plant. May and June. Stem small, compressed, 3 
in. across, with numerous compressed tubercles, and short hair-like spines (Mexico. 1834. See fig. 
553). There is another species called M. ottonis, having a large spiny stem.”’ 
Here we believe belong some of the plants which are passing as Mammiillaria golziana. 
Very different, however, are the two published illustrations of Kunze (Cact. 1g10 and 
Monatsschr. Kakteenk. 19: 101. 1909), which also seem to differ from each other. 
‘Illustrations: Monatsschr. Kakteenk. 12: 47, as Mammillaria bussleri; Monatsschr. 
Kakteenk. 27:3.f.a,as Mammillaria golziana ; Monatsschr. Kakteenk. 27:3.f.b, as Mammil- 
laria ottonis. 
4. Coryphantha recurvata (Engelmann). 
Mammillaria recurvispina Engelmann, Proc. Amer. Acad. 3: 266. 1856. Not De Vriese, 1839. 
>» Mammillaria recurvata Engelmann, Trans. St. Louis Acad. 2: 202. 1863. 
Cactus recurvatus Kuntze, Rev. Gen. Pl. 1: 259. 1891. 
Cactus engelmannii * Kuntze, Rev. Gen. Pl. 1: 260. 1891. 
Fics. 26 and 27.—Coryphantha recurvata. 
Plant-body depressed-globose, 10 to 20 cm. in diameter, often forming large masses 30 to 90 
cm. in diameter and sometimes with over 50 heads; tubercles low; radial spines about 20, yellow to 
gray, with dark tips, pectinate, recurved; central spines 1, rarely 2, longer and darker than the 
radials, 12 to 20 mm. long, more or less reflexed, often appressed; flowers 25 to 35 mm. long, said 
to be brownish outside; inner perianth-segments lemon-yellow; fruit not known. 
Type locality: Sonora. Explained in the Cactaceae of the Mexican Boundary to be 
eastern parts of Pimeria Alta in Sonora, especially in the Sierra del Pajarito. 
Distribution: Arizona and Mexico, especially along the United States-Mexican Boun- 
dary near Nogales. 
Engelmann describes { a peculiar flowering habit for Coryphantha when he says that 
the flowers originate in the base of the grooves of full-grown tubercles, being scattered over 
the top of the plant. We have also noticed this character; not only are the flowers borne 
in the axils of mature tubercles, but they are produced in great abundance in a circle 5 
to 6 cm. in diameter. 
* It is possible that Lemaire also gave the name Coryphantha engelmannui for Mammillaria recurvispina, though 
this is not shown by the text. 
t See Cact. Mex. Bound. 12. 1859. 
