564 THE DICTIONARY OF GARDENING. 
Mammillaria—continued. | Mammillaria—continued. 
their tips bearing tiny tufts of wool, and four small spines, 
which fall away on the tubercles becoming ripe, leaving two 
| short, diverging, central spines. _ Near Zimapan, Mexico (at an 
elevation of 5000ft.). See Fig. 38. 
M. sub-polyhedra (often many-sided). 7. 
arranged in a zone on the tops of the old 
stems; sepals greenish-yellow; petals bright 
red. May. /r. scarlet, lin. long, pear-shaped. 
Stem simple (till it becomes old, when it 
develops offsets at the base), broadly cylin- 
drical, 8in. high, 5in. in diameter; tubercles 
four-sided at base, prism-shaped, bearing 
pads of white wool in the corners at the 
base, and crowned with tufts of four to 
seven spines, usually all radial, sometimes 
one central. South Mexico. See Fig. 39. 
M. sulcolanata (woolly-grooved). jl. bright 
yellow, Poppy-scented, nearly 2in. across, 
the spread of the petals suggesting Paris 
Daisies. June to August. jr. glaucous- 
green, egg-shaped. Stem simple when 
young, proliferous at sides when old, the 
young plants developing from the apices of 
the tubercles, not in the axils, as is usual; 
tubercles nut-shaped, large, the bases sur- 
rounded by white wool, the points bearing 
eight to ten rigid, brown spines, all ra- 
diating from a little pad of wool. South 
Mexico, 1836. See Fig. 40. 
M. vivipara (stem-sprouting). fl. in the apex 
of the stem, l}in. long and broad; petals 
about thirty, bright purple, fimbriated. 
May and June. /r. pale green, 4in. long. 
Fic. 35. MAMMILLARIA LONGIMAMMA. 
purple just before fading, regular and spreading 
as in the Oxeye Daisy. August. Stem about 4in. 
high, naked at base, woody and wrinkled when 
old ; tubercles as in M. longimamma, but with 
long, curving, radial spines, like needles, often 
2in. long, white or rose-tinted when young, almost 
black when old. Mexico. Owing to the woody 
nature of the rootstock, and the long, tap-like 
habit of the stouter roots, this should be planted 
in pans instead of pots. See Fig. 36. 
M. phellosperma (corky-seeded). | Stems sim- 
ple, sometimes proliferous at the base, globose 
when young, afterwards almost cylindrical or 
pear-shaped, 5in, high, 2in. in diameter; tuber- 
cles 4in. Jone, arranged in twelve spiral rows, 
slightly woolly in the axils; spines radiating in 
two rows, about fifty on each tubercle, the three 
or four central ones hooked at the tip or some- 
times straight, and almost black, while the re- 
mainder are almost white. This plant has not 
been known to flower under cultivation. 
M. Scheerii (Scheer’s). _/l. terminal, erect, with 
several whorls of spreading, recurved petals, the 
lower ones tinged crimson, the upper ones pale 
yellow, forming a shallow cup 2in. across. Stem 
Tin. high and 5in. in diameter at base ; tubercles 
large, swollen, somewhat flattened, the apices 
crowned with about a dozen brown spines. 
Mexico. 
M. Schelhasii (Schelhas’). /. white, with a line 
of rose down each petal, jin. across. Early 
summer, Stem producing offsets freely at the 
base, which grow into full-sized stems, and de- 
velop young ones till a compact cushion is 
formed; tubercles closely arranged, cylindrical, 
shining green, with fifteen to twenty radial, 
white, hair-like spines, }in. long, and three 
inner, thicker ones, usually only one being 
hooked. Mexico. See Fig. 37. 
M. semperviva (ever-living). (. inconspicuous, 
scantily developed near the outside of the top 
of the stem. Stem pear-shaped, 3in. wide, the 
top slightly depressed; tubercles conical, }in. y 
long, their! bases set in a cushion of white wool, Fic. 36. MAMMILLARIA MACROMERIS. 
