158 
and bearing spines; spines setaceous, divaricate, white, 2 of 
which are erect in each fascicle, and much longer than the rest, 
spaceolate at the apex. h.D.S. Native of Mexico, on the 
mountains. 
Two-coloured Mammillaria. Clt.? Shrub 4 foot. 
10 M. símrrex (Haw. syn. 177.) plant simple, obovate ; axils 
glabrous; tubercles or mamma ovate, bearing stiff, straight, 
radiating spines at the apex. h.D.S. Native of South Ame- 
rica, and the islands. Cactus mammillaris, Lin. spec. 666. D.C. 
pl. grass. t. 3. Cat. hort. monsp. 83. Plant 6-8 inches long. 
There are about 18 or 20 series of tubercles, winding to the 
left. Spines shortish and red. omentum short, deciduous. 
Axils, when young, rather tomentose. Flowers white. Berry red. 
Simple Mammillaria. Fl. Ju. Aug. Clt. 1688. Sh. 4 to 3 ft. 
11 M. parvima’wma (Haw. suppl. 72.) plant nearly globose, 
proliferous at the top; tubercles or mammz numerous, small, 
clothed with white tomentum at the apex, each terminating in 
10 or 12 rather stiff, dark purple spines. 2%. D.S. Native of 
South America. Cactus microthéle, Spreng. syst. 2. p. 494. 
The character is from Salm-Dyck. in litt. 
Small-teated Mammillaria, Clt. 1817. Pl. }to å foot. 
12 M. Etonea‘ra (D. C. mem. cact. in mem. mus, vol. 17. 
p- 109.) plant usually multiple at the base, cylindrical, elon- 
gated, a little branched, with the axils broad and naked ; mammz 
or tubercles very short, broad at the base, obtuse at the apex, 
with the areole of the younger ones rather tomentose ; prickles 
setiform, 16-18 in each fascicle, radiating, yellow, much longer 
than the mamme, without any central ones. h. D.S. Native 
of Mexico, where it was discovered and sent to Europe by Dr. 
Coulter, as well as all the following species. 
Elongated Mammillaria. Clt. 1830. Pl. 4 foot. 
13 M. ecntna‘ria (D. C. 1. c. p. 110.) plant usually multiple 
at the base, cylindrical, elongated, with the axils broad and 
naked; mamme naked, very short, broad at the base, and ob- 
tuse at the apex, with the areole of the younger ones rather 
tomentose ; prickles bristle-formed, 16-18 in a fascicle, radiating, 
spreadingly recurved, yellow, much longer than the mamme, 
with the 2 central ones stiffer and brownish. h.D.S. Native 
of Mexico. Flowers bearded at the base, sessile in the axils, 
small and pale. 
Hedgehog Mammillaria. Clt. 1830. Pl. 4 foot. 
14 M. suscrécea (D. C. 1. c.) plant usually multiple at the 
base, cylindrical, with narrow, rather woolly axils; mammz 
ovate, short, with the areolee of the younger ones rather tomen- 
tose; prickles bristle-formed, 16-18 in a fascicle, radiating, 
yellow, longer than the mamme, but when old becoming copper- 
coloured, without any central ones. #.D.S. Native of Mexico. 
Coulter, no. 36. Flowers small, sessile, solitary in the axils of 
the mamme, forming a circle round the top of the plant. Style 
permanent ; stigma many-cleft. Berry ovate, about the size 
of a pea, crowned by the floral remains. Plant 2-3 inches high, 
and 9-11 lines in diameter, with 12-15 mamme in each series, 
which series bend to the left. 
Subcroceous-spined Mammillaria. Clt. 1830. PJ. 4 foot. 
15 M. re'nuis (D. C. 1. c.) plant multiple at the base, cylin- 
drical, with narrow, naked axils ; mamme ovate, with the areolze 
of the young ones rather woolly; prickles bristle-formed, 20-25 
in a fascicle, yellow, radiating, a little longer than the mamme, 
without any central ones. h.D.S. Native of Mexico. Coul- 
ter, no. 34. Plant 3-4 inches high, and 5 lines in diameter, 
Var. P, mèdia (D. C. 1. c.) stem thicker; central prickles 
wanting or solitary. h. D.S. Native of Mexico. Plant 10- 
12 lines in diameter. Perhapsa proper species, or perhaps M. 
cespitosa, Hort. berol. according to Salm-Dyck. 
lender Mammillaria. Clt. 1830. PI. 4 foot. 
16 M. sterte’xta (D. C. l. c.) plant multiple at the base 
CACTE®. I. 
MAMMILLARIA. 
cylindrical, with narrow axils; mammæ ovate, much crowded 
hidden by the congeries of prickles, with the areolæ smoothish ; 
prickles 20-25 in a fascicle, stiff, yellow, radiating, interwoven 
from the mammæ being so close together. h. D. S. Native 
of Mexico. Coulter, no. 37. Plant 4 inches high, and 
1 inch in diameter. Prickles 3-4 inches long, sometimes some- 
what echinated. According to a letter received from Dr. Coul- 
ter to De Candolle, this and the 4 preceding species will form, 
as he conceives, only one species; the appearance of these 
plants have a striking likeness to each other, but these differences 
appear to De Candolle real, and permanent, and he considers 
them as forming a small group of the genus, remarkable for the 
elongation of their stems, and for their yellow appearance. 
Interwoven-spined Mammillaria, Clt.1830. PI. 3 foot. 
17 M. cyzinprica (D. C. l. c. p. 111.) plant simple, cylin- 
drical, with a few bristles in the axils; mammæ ovate, with 
smoothish areole ; bristles 20-25, in a fascicle, radiating, white, 
shorter than the mamme: the 2 central prickles stiff and diverg- 
ing, twice the length of the surrounding bristles. R. D. S, 
Native of Mexico (Coulter). This plant is easily distinguished 
from all the preceding, in the colour of the mammæ being deep 
green, not yellow. Plant 5 inches high, and 1 inch in diameter 
Bristles 14-2 lines long, and the central prickles 3-4 lines long. 
Cylindrical Mammillaria. P1. 4 foot. 
18 M. r'rrcans (D. C. L c.) plant simple, obovate, somewhat 
umbilicate at the apex, with naked axils; mammæ ovate, having 
the areolz of the young ones rather tomentose ; bristles 25-30 1m 
each fascicle, white, radiating, stiflish, and with 1-3 stiff, erect 
prickles, which are a little longer than the bristles that surroun! 
them. h.D.S. Native of Mexico. Coulter, no. 48. Plant 
2 inches high and 2 inches in diameter. 
Var. B, minor (D. C. 1. c.) plant exactly obovate, one half 
smaller than the species, but it is probably a young plant of the 
same, 
Var. y, globisa (D. C. 1. c.) plant larger, globose, with the 
upper axils bearded. Perhaps the same, but an old plant. 
Elegant Mammillaria. Pl. 4 foot. : 
19 M.ra‘prans (D. C, 1. c.) plant simple, nearly globose, with 
naked axils; mamme ovate, large, with the areolæ smoothish ; 
prickles 16-18 in a fascicle, radiating, white, stiff, when young 
rather tomentose, without any central ones. h. D. S. „Native 
of Mexico. Coulter, no. 35. There are varieties of this plant 
either with an obtuse or a depressed apex, and the spines either 
white or yellowish. Plant about 3 inches high, and the samé 
in diameter. Prickles 5-6 lines long. 
Radiating-prickled Mammillaria. PI. 4 foot. 
20 M. irrecuta‘ris (D. C. 1. c.) plant multiple, and rather 
tuberous at the base, with ovate offsets, and naked axils ; mamme 
oblong, with smoothish areole ; bristles 20-25 in each fascicle, 
white, a little reflexed, without any central prickles. R. D. $. 
Native of Mexico. Coulter, no. 31. Plant 2 inches high, with 
offsets an inch in diameter. Bristles 2 lines long. 
Irregular Mammillaria. Pl. 4 foot. ; 
21 M. cresrispina (D. C. 1. c.) plant multiple at the bases 
offsets ovate; axils naked; mammæ ovate, short, crowded, “is 
the areolz smoothish; prickles straight, outer 16-17 radiating 
and white, central 3 brown and erect. h.D.S. Native ° 
Mexico. Coulter, no. 14. Plant 2 inches high and 14 inch s 
diameter. The prickles, from the mamme being close, near y 
hide the stem. 
Thick-spined Mammillaria, P1. 2 inches. ce 
22 M. conoipea (D.C. 1. c. p. 112.) plant simple, ovate-con! 
cal, with the axils woolly in the young state; mamme ers 
crowded, with the areolz rather tomentose while young ; PT 
straight, stiff, the outer 15-16 radiating, 
but the central 3-5 are 
erectly diverging, brown, and rather longer than the ray © pék: 
