514 
THE DICTIONARY OF GARDENING, 
Mammillaria—continued. 
being fatal, and a soil of the wrong sort soon killing all 
the roots. They may be grown in small pots, in a mixture 
of loam and lime rubbish, and a warm greenhouse. 
M. multiceps should be grown on a shelf in a_ cool 
greenhouse—anything like a stove temperature being 
fatal to it. As a flowering plant it is of no value, but 
the compact tuft formed by its numerous stems, with 
their attractive spines, renders it worthy of cultivation. 
M. pectinata (see Fig. 546) is attractive even when not 
in flower. It requires warm greenhouse treatment, with 
exposure to fall sunshine. During late antumn it shonld 
have plenty of air to ripen the new growth made whilst 
flowering ; in winter it should have a dry position near 
the glass. : 
M. pulchra, a rare kind nowadays, is one of the 
prettiest, and it should always be grown in a warm 
Fic. 545. MAMMILLARIA MICROMERIS. 
house. M. pusilla (see Fig. 547) should be grown in a 
frame in summer, and wintered on a shelf in a warm 
greenhouse. M. pycnacantha should be grown in a warm 
greenhouse all the year round. Old stems develop offsets 
from the base, by which the species may be multiplied. 
M. Scheerii grows naturally ma red, sandy loam, and 
under cultivation requires warm-house treatment, except 
during the autumn, when it may .be placed in a frame 
and exposed to full sunshine and plenty of air. 
M. Schelhasii (see Fig. 555) may be tried out of doors 
in a sunny position in summer if wintered on a shelf in 
a greenhouse. M. Schiedeana should be grown in a green- 
house where frost is excluded, and where there is plenty 
of sunlight at all times. It is easily increased, either 
from seeds or from the offsets produced at the base of 
old stems. M. semperviva needs to be grown in a frame 
in summer, and wintered in a cool greenhouse or frame. 
For the rest, M. stella-awrata may be cultivated under 
a bell glass in a room window, the only danger being 
damp during winter. M. sulcolanata (see Fig. 558), a 
charming little plant, should be grown in a frame 
exposed to full sunshine all summer, and removed to a 
shelf in a warm greenhouse in winter. Grafted on to 
a Cereus or an Opuntia it is healthier than when on its 
own roots. M. tuwberculosa may be grown in an ordinary 
greenhouse, on a shelf, in full sunshine. M. wncinata, 
like all the kinds with short, angular tubercles, is easily 
managed, and always ripens seeds. It may be grown in 
a frame, or even out of doors, all through the summer, 
removing it to a greenhouse for the winter; while 
M. viridis likes a sunny frame out of doors during 
summer, and a dry, warm greenhouse shelf in winter. In 
Utah and New York, M. vivipara is commonly cultivated 
as a hardy garden plant, bearing exposure to keen frosts 
and snow without suffering; but it would not thrive 
out of doors in winter with us, unless covered by a 
handlight during severe weather, and protected from 
Mammillaria—conlinued. 
heavy rains in winter. It likes a strong, clayey soil. 
M. Wildiana requires to be grown on a shelf in a sunny 
greenhouse, both in winter and in summer. M. Wrightii 
likes plenty of moisture and sunlight during the summer, 
Fic. 546. MAMMILLARIA PECTINATA. 
whilst making new growth ; but in winter, when at rest, it 
ought to be kept on a shelf, and just moistened overhead 
in bright weather. 
M. Zucchariniana is a large, handsome-stemmed kind, 
easily kept in health, and flowering freely if grown on a 
shelf in a cool greenhouse in winter, and placed in a 
warm, sunny position out of doors in summer. It pro- 
Fic. 547. 
MAMMILLARIA PUSILLA, 
duces seeds freely, and pretty plants, 3in. or more in 
diameter, may be obtained in two years from seeds. By 
grafting it, when young, on the stem of a Cereus or a 
cylindrical Opuntia, a healthy, drumstick-like plant is 
easily obtained. 
