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CISTALS. 373 
White Crassula of the Cape, and the Spurious-L ieaved Rochea, from 
the same botanical region. This is a shrub which produces a 
handsome red flower, odorous and of long duration, the Cotyledon 
orbiculata, with glaucous, farinaceous leaves edged with red, 
having a corolla with reddish limb rolled from the outside. The 
Scarlet Echeveria, from Mexico, has mts - rosettes, and flowers 
of a lively red, disposed in branching ¢ 
The Crassulaceze are found “in the a situations, ius not 
a blade of grass or even of moss can grow; on naked rocks, old 
walls, hot, sandy plains, exposed to heavy dews by night, and to 
the fiercest rays of the noonday sun. Soil is to them something to 
keep them stationary, rather than a source of nutriment, which 
in these plants is conveyed by myriads of mouths to the juicy 
beds of cellular tissue which lie beneath them, invisible to the 
naked eye, but covering all their surface.” 
CisTALs. 
A group of hypogynous exogens, with monodichlamydeous 
flowers, parietal or sutural placentz, and a curved or spiral embryo 
With little or no albumen. 
Shrubs 
or herbaceous exogens, with trimerous or pentamerons flow 
stamens 8 usually definite, hy pogynous, distinct, and never tetradynam 
fruit eS up; seeds album eee The Rock Roses are natives of ‘he CXXII. Cistaceze. 
¥ peers and North f Africa, and South peckienl and rare! 
_Hesbnceous 
te otlaie, ich ue nantes sik bed,‘ har tha , 
CXXIT. Crucifere. 
opposite each of the ef geome Ser and 
me sepals, ngs one “opposite each of the lateral se 
Stamens to _ sepals, and not four or eight. 
eats bon rubby 0: om Be th definite flowers oe ; 
sbuine y-parte calyx, petal s iad, fleshy plates, pie withou 
5 Borg fruit open at the mess In nette me ena of 
the stamens gr grow out of a large glandular one-sided 
exogens, shrubs =~ Lota tals four or eight, dae 
up to raga » flowers solitary or sa pal exalbuminous, and ene : 
on them ; They are chiefly th? ig ‘of the tropics or counties -ayeniiom| CXXV. Capparidacez. 
placentas dens fruit is fleshy and indehiscent, with parietal polys, 
I 
annual, biennial, and perennial exogens, with tetramerous, =5|~ 
af - CXXIV. Resedacee. 
The Cistals are chiefly European, and possess anti-scorbutic and 
the; nulating properties, combined with an acrid flavour, and in 
er decay they give out large portions of nitrogen. Mustard, 
Seakale, and the Cabbages, Radish, and’ Turnip, are well- 
. 
