134 
THE DICTIONARY OF GARDENING, 
Pittosporum—continued. 
P. Tobira (its native name).* fl. white, fragrant; peduncles one- 
lowered, pubescent, disposed in aggregate umbels. March to 
' August. Lebeau btuse, cori j th. h. 12ft. Japan, 
1804. Half-hardy shrub. See Fig. 193. (B. M. 1396.) 
P. undulatum (wavy-leaved).* f. white; peduncles terminal, 
aggregate, pubescent, branched, many-flowered. February to 
June. Jl. oval-lanceolate, undulated, — at both ends, 
a, m kee Australia, 1789. Half-hardy shrub. (A. B. R. 
. viridiflorum (green-flowered).* fl. greenish-yellow, Jasmine- 
scented; panicle somewhat globose, terminal, glabrous. May. 
l. obovate, retuse, cuneate at the base, shining, under surface 
reticulated. h. 6ft. Cape of Good Hope, 1806. 
shrub. See Fig. 194. (B. M. 1684.) SYN. P. sinense. 
PLACEA (said to be derived from the native name 
in Chili). Orp. Amaryllidee. A genus comprising 
(according to Mr. Baker) about five species of greenhouse, 
bulbous plants, natives of Chili, and closely related’ to 
Hippeastrum, from which they differ in having a perfect 
evolute corona. Flowers many in an umbel, pedicellate; 
perianth somewhat funnel-shaped, slightly declinate, with 
an exceedingly short tube. Leaves linear, carinate. Herr 
Max Leichtlin, a wonderfully successful cultivator of 
choice bulbous and other plants, says: “Placea is one 
of those bulbs which will not be pot-bound. I either 
plant them in a walled frame, which is kept free of 
frost, or in a low house which has a border on the 
south side, and is kept between 37deg. and 40deg. 
Fahr. at night, and leave them well alone. They go to 
rest about August, and push about December, flowering 
in May. In a pot, they ought to have their exact time 
of rest, and must be buried in the soil, which ought to 
be very rich; but in pots they are not certain to flower. 
They must be planted with at least an inch of soil 
over their necks, and they prefer a loose soil. I use 
thoroughly-decomposed cow-manure (three and four years 
old), mixed, during decomposition, with one-third silver 
sand.” The three best-known species are here described. 
— 
Fig. 195. FLOWERS OF PLACEA ARZE. 
P. Arzæ (Arza’s). jl. pale yellow, lined with purple: corona 
_monop! — one snes Purple: —— — to five- 
z igh. l two, ucous, 9i , sin. 
broad. Bulb 2sin. in diameter. See Wig. 196, — 
i rge-flowered). A. white, freely striped with 
; scape erect, terminating in an umbel of 
l. few, linear, long, rounded and 
fistulose at the margin. 1869. This, the finest ies of the 
genus, resembles P. ornata, but is much larger. H. 574.) 
P. e ioe — Jl. snow-white, lined with brilliant ver- 
; Segments spathulate - oblong; corona whi 
; scape ĝin. to 9in. high, four to —— 
» Shin , obtusely keeled below. 1840. (B. R. 
& 
Greenhouse ` 
PLACENTA. 
originate. à 
PLACENTIFORM. Quoit-shaped, or like a flat 
cake in form. 
The part on which the ovules 
PLACODIUM. A synonym of Plocama (which see). — 
PLACOMA. A synonym of Plocama (which see). 
PLADERA. A synonym of Canscora (which see). 
PLAGIANTHUS (from plagios, oblique, and anthos, 
a flower; referring to the usually unequal-sided petals). 
Cotton-tree; Ribbon-tree. ORD. Malvacee. 
comprising about eleven species of greenhouse or half- 
hardy shrubs, or rarely herbs, natives of Australia and 
New Zealand. Flowers white, often small, in the axils 
or in terminal crowded spikes, rarely solitary or dis- 
posed in short axillary panicles; calyx five-toothed or 
five-fid. Leaves entire, sinuate, angled, or rarely lobed. 
The species described below are half-hardy shrubs, ex- 
cept where otherwise stated. For culture, see Malva- 
P. betulinus (Birch-like). fl. small, on slender, ebracteolate 
pedicels; panicles terminal, much-branched, very many-flowered, 
stellate-tomentose. Summer. J. of young plants jin. to jin. 
long, rounded-ovate, variously crenate and lo! ; in full-grown 
specimens, lin. to 2in. long, ovate or ovate-lanceolate, acuminate, 
rounded or cuneate at , coarsely crenate-serrate or obtusely 
— — h. (in its native place) 40ft. to 70ft. New Zea- 
an i 
P. divaricatus (straggling). fl. in axillary fascicles or on one- 
łin. long, narrow-linear or sub-cuneate, obtuse, quite entire, one- 
nerved. Branches slender, spreading, tough. 8ft. New Zea- 
land, 1820. As this species is only found in salt marshes, where- 
very few shrubby plants thrive, its cultivation in such places 
might prove beneficial. (B. M. 3271.) : 
P. Lampenii (Rev. R. Lampen’s).* fl. very pale yellow, almost 
white ; petals five, roundish-oblong, much longer than the calyx; 
panicles short, leafy, axillary. November to February. l. shortly 
petiolate, oblong-lanceolate, acute, 4in. to 5in. long, sharply and 
—— — deep green above, hoary beneath. 
xxii. 
P. L (Lyall’s).* fl. Zin. broad, drooping, axillary ; 
uncles one-flowered, solitary or fascicled’ ebracteo- 
ite, about as long as the petioles. July. l. 2in. to 
4in. long, ovate-cordate, acuminate, deeply and doubly 
crenated ; petioles sin. to ldin. long. h. 
. A handsome, greenhouse, sub-deciduous 
x 
Van Diemen’s Land, 1833. (G. C. n. s., 
Å‘ 
; Zealand, i 1 
b.. (B. M. 5935.) 
rachis of axillary racemes; males edicellate, females 
sessile. Summer. l on rather ong petioles, from 
deeply cordate-ovate to lanceolate, often acuminate, 
2in. to Jin. (or rarely more) long, coarsely crenate. 
Australia. greenhouse shrub or small tree. 
(B. M. 2753,"under name of Sida pulchella.) 
P. sidoides (Sida-like).. 7. small, in short, axillary 
racemes, the males with a campanulate, the females 
with a tubular, calyx. Summer. J. from ovate-lanceo- 
late to lanceolate, obtusely serrate, : 
rarely 4in., long, rounded at base, on petioles lin. to 
żin. long, pisbrome on the upper side when full 
grown, with numerous impressed veins. hk. 4ft. 
Australia. Greenhouse. (B. M. 3396.) 5 
PLAGIOLIRION (from plagios, 
and leirion, a lily; 
the perianth). ORD. Amaryllidee. A monotypic 
genus, requiring treatment similar to Eucharis 
(which. see). 
P. Horsmanni (Horsmann’s).* fl. white, not small, 
posed in a scapose, ten to eivetontete eee od 
gular, one segment being di 
elliptic Ay w ent — bove, light beneath. Bulb 
e > , Drg a , ight e 
long-necked. Columbia, 1883. ve. È — 105, Fig. 16.) 
PLAGIOLOBIUM. Included under 
PLAGIOPHYLLUM. 
(which see), ` 
mh 
oblique, 
a h irre- 
downwards, and the-other five 
l. two or three to a i Á 
Hovea, — ete 
A synonym of Centradenia 
PLAITED. Folded lengthwise, like the plaits of a 
closed fan. T yr 
PLANE. Flat; level. 
A genus- 
). in 
flowered peduncles, shorter than the leaves. June. 1. lin. to 
. New 
P, pulchellus (pretty). jl. small, clustered along the 
2in. to 3in., or ` 
PLAGIOGYRIA. Included under Lomaria. 
in allusion to the shape of - 
* 
Ai 
