AN ENCYCLOPAEDIA OF HORTICULTURE. 193 
FIG. 209. WALL CASE. 
WALL CASE OR FRAME. A general term applied 
to a glass protection sometimes put over such fruit-trees 
as Apricots, Peaches, and  Nectarines, in un- 
favourable localities, where the fruits cannot be 
depended upon to ripen outside. A Wall Case 
or Frame (see Fig. 209) is, practically, an un- 
heated, narrow house; but if glass protection with- 
out heat is unsafe against the injury caused 
by spring frosts, it would be preferable to incur 
the further expense of having a house which, for 
erecting, would, in many cases, not cost very much 
more, when the wall was already at command, 
and insert sufficient hot-water pipés to keep out 
frost. The interior would then be available, so 
far as space permitted, for accommodating many 
other plants in winter which merely require a 
slight protection. 
WALL CRESS. See Arabis. 
WALL FERN. Se Polypodium vulgare. 
WALLFLOWER. See Cheiranthus Cheiri. 
WALLFLOWER, ALPINE. A common 
name for Erysimum ochroleucum (which see). 
WALLICHIA (named after Dr. Nathaniel 
Wallich, 1786-1854, a Danish botanist, and author 
of several valuable works on Indian plants). Syns. 
Harina, Wrightia (of Roxburgh). ORD. Palme. A 
small genus (two or three species) of Hast Indian, 
dwarf, tufted, stove Palms. Flowers yellowish, 
mediocre, moncecions or rarely polygamous, bract- 
eate and bibracteolate; spathes very numerous, 
slenderly coriaceous, the lower ones narrower, 
tubular, the upper ones boat-shaped, complete, im- 
bricated; spadices shortly pedunculate, the males 
drooping or decurved, ovoid, much-branched, dense- 
flowered, the females looser, erect. Fruit reddish 
or purple, ovoid-oblong, one or rarely two-celled 
and seeded. Leaves densely fascicled, in one species 
terminal and distichous, furfuraceous, unequally 
pinnatisect; segments solitary or the lower ones 
fascicled, cuneate at base, oblong, obovate, or ob- 
lanceolate, erose-toothed, the terminal one cuneate ; 
petioles slender, laterally compressed; sheaths 
short, cut at the margins and furnished with long 
Vol. IV, 
FIG. 210. WALLICHIA CARYOTOIDES 
Wallichia—continued. 
hairs. The species require to be grown in 
a strong, rich soil. Propagation may be 
effected by seeds, when procurable; or 
by gradually separating the suckers, so 
as to allow them to make sufficient root 
before they are quite detached. 
W. caryotoides (Caryota-like).* fl., males 
yellowish - white, covering the spadix 
branches; females few, amongst the males 
near the bases of the branches. July. jr. 
ovate-oblong, the size of a nutmeg. l, few, 
alternate, petiolate, 3ft. to 8ft. long; leaflets 
sessile, 1ft. to lift. long, the lower ones in 
opposite fascicles, the upper ones most) 
solitary and alternate, all weie Age, 
premorse at apex, deep shining green above, 
whitish beneath. India, 1825. See Fig. 210. 
W. densiflora (dense-flowered) fl., male 
spadices enveloped in large, imbricated 
spathes, of a dark purple, streaked with 
yellow; these separate, and then a dense 
cluster of nearly white female spadices, with 
violet-coloured ovaries, appears. l., lower 
pinne binately fascicled, whitish below, the 
rest solitary, sinuate-lobed or toothed. Plant 
stemless. A. l2ft. Assam, 1840. (B. M. 
4584.) - 
WALLISIA (of Regel. Included 
under Tillandsia, (which see). 
WALLISIA PRINCEPS (of Re- 
gel. A synonym of Lisianthus prin- 
ceps (which see). 
WALL PENNYWORT. A common name for 
Cotyledon Umbilicus (which see). 
A 
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