pee poe es 
e m 
AN ENCYCLOPADIA 
OF HORTICULTURE. 237 
Prunus—continued. 
pubescent pedicels, April. fr. purple or crimson, with a bloom, 
globular, jin. to lin. in diameter, the stone very turgid. J. ovate 
or oval, finely serrated, softly pubescent beneath. h. 2ft. to 3ft. 
North America, 1800. Plant straggling. 
P. Mume (Mume). Ji. appearing early, usually twin, sub-sessile. 
Jr. globose, very slightly velvety ; stone oval, convex, foveolate. 
l. rounded at base, obovate or broadly elliptic, long-cuspidate, 
argutely duplicate-serrated, glabrous or mostly pubescent- 
scabrous beneath. Japan. (S. Z. F. J. ii.) 
P. nigra (black). A synonym of P. americana. 
P. paniculata (paniculate). A synonym of Cerasus psĉudo- 
cerasus. = 
P. pennsylvanica (Pennsylvanian). American Wild Red Cherry. 
f. white, many in a cluster, on long pedicels. May. fr. light 
red, globose, very small, with thin and sour flesh ; stone globular. 
i. oblong-lanceolate, pointed, finely and sharply serrated, shining, 
green and smooth on both sides. Bark light reddish-brown. 
h. 20ft. to 30ft. North America, 1773. See Fig. 301. 
P. Persica (Persica). A synonym of Persica vulgaris. 
P. Pissardii (Pissard’s).* jl. white. March and April. fr. small, 
or hardly medium size, somewhat oval, deep red or purple, even 
when very young; flesh pulpy, sugary when mature. J. glabrous, 
broadly oval, red-purple. Twigs glossy black. A handsome, orna- 
mental shrub or small tree, introduced to Europe, a few years 
ago, from Persia. (R. H. 1881, 190.) 
P. pumila (dwarf). This is the correct name of the plant de- 
z — in this work as Cerasus depressa. 
+ salicifolia (Willow-leaved). A. white, small, growing singly 
or several together. April. fr. about the colour sel gf of 
those of P. cerasifera. l obovate, acuminate, glossy and rugulose 
above, quite smooth beneath, finely serrulated, the serratures 
minutely glandular ; petioles short, without glands. China. 
. sinensis (Chinese).* fi. white, small, disposed in clusters along 
the shoots. Spring. fr. small, globular, deep red, of peculiar 
but. agreeable flavour. l. oblong, acuminated, serrulated. 
China, 1869. Of this species, there are varieties with rose and 
double white flowers. See Fig. 302. 
P. spinosa (spiny). Blackthorn or Sloe. A. white, rising before 
or with the leaves, on solitary peduncles. Spring. fr. black, 
roundish, sour or acid. l obovate-elliptic or ovate, smooth 
ng, sharply and doubly serrated. h. 10ft. to 
tt. Europe (Britain). A well-known, deciduous shrub, with 
spinose branches. (Sy. En. B. 408.) There are two or three 
varieties, including double-flowered, variegated-leaved, large- 
and egg-shape-fruited, forms. — 
+ Subhirtella (somewhat hairy). ji. white, with a red calyx, 
small, borne three or four together on the short growths. J. small, 
ovate, acuminate. Branches pendent, with slender branchlets. 
h. 10ft. Japan, 1868. An elegant tree. Syn. Cerasus pendula. 
P. triloba (three-lobed).* fi. white or rose, generally double, 
large. Early spring. l. three-lobed, appearing after the flowers. 
h. 6ft. China, 1857. A very handsome, early-flowering shrub. 
Syys. P. virgata Gi ardens), Amyadalopsis Lindleyi (F. d. S. 
Xv. et E 863, 53 and 54), Prunopsis Lindley: (R. H. 
P. virgata (twiggy). A synonym of P. triloba. f 
PR . Stinging ; causing an itching sensation. 
PSAMMA (from psammos, sand; alluding to the 
use to which the species are put). Marrem Grass. ORD. 
€ ameæ. A small genus (two species) of hardy grasses, 
inhabiting the shores of Europe (Britain) and North 
Africa. Spikelets in a contracted panicle, much laterally 
compressed, one-fid; empty glumes two, scarcely exceed- 
ing the flowering ones, rigid, long, narrow, keeled; flower- 
ing glumes rigid, slightly pedicelled, with an oblique 
callus, and a small pencil of silky hairs at the base. 
P. arenaria is, on some parts of the coast, employed for 
binding sea sandbanks; it is also used for making mats 
and thatch. 
v 
z — when young, 
1., spikelets ; ls scabrid ; 
b-cylindric, to 6in. long, ight, broadest 
ee aye 
Jong, : u ; brous and gl: 
within’; shecths ; ligule very long, bifid. Stems 2ft, to 4ft, 
P. baltica Baltic). This is very similar to P. arenaria ; it chiefly 
less cylindric panicles, (J. B., 1872, 127.) 
PSAMMISIA (named after Psammis, or Psammites, 
a King of Egypt, B.c. 376). Orp. Vacciniacee, A 
genus comprising nearly thirty species of stove or warm 
Psammisia—continued. 
of the Andes and the mountains of Venezuela and 
Guiana. Flowers frequently scarlet, rather large, dis- 
posed in axillary racemes or corymbs, rarely solitary or 
fascicled; calyx urceolate-campanulate, with a five-lobed 
or toothed limb; corolla tubular, ventricose or rarely 
conico-globose at base, with a five-lobed, erecto-patent 
limb; bracts sometimes pink. -Leaves alternate, per- 
sistent, coriaceous, sessile or petiolate, entire or sub- 
serrate. The species best known in gardens are here 
described. For culture, see Thibaudia. 
P. Hookeriana (Hooker’s).* f. (including the calyx) deep rose- 
red, paler at the mouth, nearly lin. long, disposed in axillary and 
sub-terminal, four to six-flowered racemes. September. l. alter- 
nate, on short petioles, oblong-obovate, acuminate, but usually 
rather obtuse, h., 14ft. to 2ft. (in its native place 6ft. to 12ft.). 
Columbia. (B. M. 4544, under name of Thibaudia pichinchensis 
glabra.) SYN. P. pichinchensis glabra. 5 
P. Jessicæ (Mrs. John Bateman’s).* fl. pale red, jin. long, 
between oblong and cylindric, fleshy; racemes short, solitary, 
from ten to twelve-flowered. September. J. ovate or ovate- 
lanceolate, 6in. to 10in. long, shortly petioled, rounded at the 
base, narrowed into a long, acuminate apex, quite entire. 
Branches pendulous. Caraccas, 1865, (B. M. 5547, under name 
of Thibaudia Jessice.) 
P. longicolla ., corolla bottle-shaped, the 
widest and longest portion of he tube scarlet, the column or 
gl ria "ue: toa. ht IAU 
, coriaceous, in. long, 
petioled, much acuminate, entire. A. 3ft. to 4ft. South 
P. pendulifiora (pendulous - flowered) fl. ri 
corolla large, — — — 
mish, five-lo| apex ; racemes tary, 
owered, secund, and k 
een, shortly petioled, el 
finely acuminated, sub-di 
terete, green, tinged with , i 
P. pichinchensis glabra (Pichincha, smooth). A synonym of 
P. Hookeriana. : : * 
P. sarcantha (fieshy-flowered). red, d with green; 
corolla tubular-urceolate, fleshy, — racemes or sub- 
umbellate; pedicels one-flowered. Spring. coria- 
È 
Y short petioles. Stem erect, branched. New Grenada, 
1864.” (B. M. sho, under name of Thibaudia sarcantha.) SYN. 
P. sclerophylla. 
P. sclerophylla (hard-leaved). A synonymof P. sarcantha. 
LE A synonym of 
Citrus trifoliata (which see). 
PSEUDALANGIUM. A synonym of Marlea 
(which see). 
PSEUDATHYRIUM. 
podium (which see). i 
PSEUDOBARLERIA (of Anderson). A synonym of 
Petalidium (which see). 
PSEUDO-BULB. A bulb in appearance, but not in 
structure; a corm; the thickened internode in epiphytal - 
Orchids. 
PSEUDODRACONTIUM (from pseudo, false, and 
Dracontiwm ; in allusion to its resemblance to that plant). 
"ORD. Aroidee (Aracew). A genus comprising only a 
couple of species of stove, tuberous herbs, natives of 
Cochin China. Male flowers scattered; females densely 
crowded; spathe erect, boat-shaped, acute, shortly con- 
volute at base, opening above; spadix shorter than the 
spathe, thick, sessile; peduncle much shorter than the 
petiole. Leaves trisected, the segments cut or pinnate ; 
pinne lanceolate, acuminate, the upper ones confluent and 
-decurrent, the lower ones remote and sessile; petioles 
elongated, thick, sheathing at base. One species has been 
introduced; it requires culture similar to Caladium 
(which see). 
described in this work as Amorpho, — 
PSEUDOLARIX (from pseudo, false, and Lariz, 
the Larch, which it resembles). False or Chinese Larch 
natives | species being a noble, hardy tree. It is 
Golden Larch, Orp. Coniferæ. A monotypic genus, the 
petal 
Included under Poly- 
P. Lacourii (Lacour’s). This is the correct name of the plant 
