AN 
ENCYCLOPADIA 
OF HORTICULTURE. 
Psidium—continued. 
to which all quantity of leaf mould and dried cow- 
dung should be added; the drainage must be perfect. 
Propagated by cuttings of the young shoots, getting a 
little firm at their base, inserted in sand, under a bell 
glass, in bottom heat. The following species are occa- 
sionally seen in cultivation : 
P. aromaticum (aromatic). fl. white, solitary. July. fr. yellow, 
globose, four-celled, hardly the size of a che l. oblong, acu- 
minated, glabrous, Branchlets tetragonal. h. 5ft. to 8ft. Guiana 
and Cayenne, 1779. Shrub. i ; 
P. Cattleyanum (Cattley’s).* fl. white; pedicels opposite, 
one-fi d, hardly equal in length to’ the petiole” mar. 
fr. of a fine deep claret-colour, rather large, nearly spherical, 
growing in the axils of the leaves; the skin has much the - 
sistence-of that of a fig, but is thinner; the interior is a 
soft, fleshy pulp, lish-red next the skin, but becoming 
paler towards the middle, and at the centre is quite white; it 
is juicy, and in consistence is much like a strawberry, to which 
it bears some resemblance in flavour. J, obovate, coriaceous, 
avite glabrous. Branchlets terete, glabrous. h. 10ft. to 20ft. 
~ Brazil, 1818. Shrub. See Fig. 304. (B. M. 2501; B. R. 622.) 
P. cordatum (heart-shaped). A. white; peduncles one or few- 
flowered ; anthers roundish. May to July. l. ovate or oval, 
rounded at both ends or cordate at base, sessile or shortly petioled, 
the veins obsolete or inconspicuous. Branches compressed- 
cylindrical. h. 5ft. West Indies, 1811. Shrub. (B. M. 1779.) 
P. Guava (Guava). fl. white; peduncles three to eight, or many- 
flowered, downy. June. fr. yellow, globose, somewhat astrin- 
gent, with an agreeable odour. J. oval or oblong, elliptic, puberu- 
lous beneath. Branches tetragonal. A. 6ft. to 15ft. West Indies, 
&c., 1692. A low tree. SYN. P. pomiferum. 
P. polycarpum (many-fruited). fl. white ; calyx closed in the 
bud; anthers oblong; peduncles usually three-flowered. May. 
l. chartaceous, elliptical or oval-oblong, puberulous beneath ; 
primary veins costate, prominent beneath ; secondary ones reticu- 
lated and transverse. Branchlets compressed-cylindrical, pubes- 
cent. h. 3ft. Trinidad, 1810. Shrub. (B. R. 653. 
P. pomiferum (Apple-bearing). A synonym of P. Guava. 
P. pyriferum (Pear-bearing). Common Guava. fl. white, soli- 
tary. June. fr. yellowish when ripe, pear-shaped ; pulp sweet, 
aromatic, and pleasant. This low tree is simply a form of 
P. Guava. (B. R. 1079.) 
PSILA ROSÆ. See Carrot Grubs. | 
PSILODOCHEA. Included under Angittsris. 
PSILOGYNE. A synonym of Vitex (which see). 
PSILONEMA. Included under Alyssum. 
PSILOS. Used in Greek compounds, this term signi- 
fies thin (Lindley), also naked or bare (Asa Gray). 
PSILOSANTHUS. A synonym of Liatris. 
PSILOSTEMON. A synonym of Trachystemon 
(which see). 
PSILOSTOMA. A synonym of Plectronia (which see). 
(from silos, naked; the plants are 
almost destitute of leaves). Orp. Lycopodiacew. A 
genus containing very numerous forms, which are, how- 
_ ever, according to Mr. Baker’s unpublished Synopsis of 
the Lycopodiacew, reducible to two species. The one 
here described is a curious club-moss, inhabiting the 
tropical and sub-tropical regions of both hemispheres. 
It is of little hortictltural value. It thrives in well- 
drained pots of fibrous peat, or may be grown on pieces 
of such tree ferns as Dicksonia antarctica. 
P. triquetrum (three-sided), Stems dichotomously forked, com- 
pressed or angular, rigid, erect or slender, pendulous; branches 
Koa pore ee — 
the axils Of the Igaves, A. 9in@@1798. (L. B. C. 1916.) 
MPSIT. A synonym of Symphyostemon 
(which see). * : 
PSORALEA (from psoraleos, warted or scurfy; in 
reference to the plants being, for the most part, sprinkled 
all over or ronghened with glandular dots or wart-like 
points). Scurfy Pea. ORD. Leguminose. A large genus 
(about 100 species have been deseribed) of greenhouse 
or hardy, annual, biennial, or perennial herbs, shrubs, 
or sub-shrubs, inhabiting South Africa, North and South 
America, Australia, and the tropical and temperate 
regions of Asia, Europe, and North Africa. Flowers 
Psoralea—continued. 
purple, blue, pink, or white, capitate, 
racemose, or fasciculate, rarely solitary ; calyx lobes sub- 
equal or at length larger, the two upper ones often 
connate; petals nearly as long, or shorter than the 
keel; standard ovate or orbiculate. Leaves usually com- 
pound, consisting of three to five leafiets, though occa- 
sionally the leaves are simple; stipules adhering to the 
stalk. The Cape species thrive in well-drained, sandy 
peat, and the others in ordinary garden soil. The shrubby 
kinds are increased, in April or May, by cuttings of the 
half-ripened shoots, inserted in sand, under a glass. The 
herbaceous species are propagated by divisions when the 
new growth commences. The following is a selection of 
the best kinds introduced. Except where otherwise 
stated, they are greenhouse, Cape shrubs. 
P. aculeata (prickly).* #. blue and white mixed, axillary, 
solitary, sessile, approximate. June and July. J. trifoliolate ; 
leaflets cuneiform, ending in a recurved ee 
stipules prickle-formed. A. 2ft. to 3ft. 1774. (B.M. 
P. aphia (leafless). fl. blue; keel and wings white; pedicels 
axillary, short, solitary, one-flowered. May to August, /., lower 
ones simple or trifoliolate ; leaflets linear-lanceolate, upper ones 
abortive, scale-formed. A. 4ft. to 7ft. 1790. (B. M. 1727.) 
P. arborea (tree-like). fl. bluish ; pedicels axillary, one-flowered, 
longer than the leaves. May. J. impari-pinnate; leaflets linear- 
lanceolate; stipules recurv: h. 6ft. to 8ft. 1814. (B. M. 2090.) 
P. glandulosa (glandular). f/i. white, marked with blue, dis- 
posed in axillary, spicate racemes ; bracts very small, 
ay to September. J. ternate; leaflets ovate-lanceolate, acu- 
minate; petioles scabrous. Stem erect. h. 4ft. Chili, &c., 
1770. Half-hardy shrub. (B. M. 990.) 5 
P. melilotoides (Melilot-like). ji. pale purple; peduncles race- 
mose; racemes or spikes linear. A l. pinnately trifolio- 
late; leaflets lanceolate, glandular beneath. h. lft. to 2ft. 
North America, 1814. Hardy perennial herb. (B. M. 2063; 
B. R. 454.) 
P. Mutisii (Mutis). A synonym of Dalea Mutisii. 
P. pinnata (pinnate-leaved).* fi. blue, striped ; pedicels axillary, 
one-flowered, much shorter Sean the AR ga: May to July. 
i. impari-pinnate ; leaflets two or three pairs, linear, 
as well as the branchlets, slightly puberulous. A, 3ft. to 6ft. — 
1690. (A. B. R. 474.) : — 
PSYCHOTRIA (from psyche, life; referring to the 
powerful medicinal qualities possessed by several of the 
species). Syns. Myrstiphyllum, Psychotrophum. In- 
cluding Gloneria. ORD. Rubiacew. A genus comprising 
about 500 species of stove shrubs or small trees, rarely 
perennial herbs, erect, climbing, or twining, all inhabiting 
tropical regions. Flowers white, green, pink, or yellow, 
variously disposed; calyx tube short, limb rarely per- 
sistent; corolla funnel-shaped, tubular, or sub-campanu- 
late, with a limb of five, rarely four or six, valvate lobes. — 
Leaves opposite, very rarely ternately or quaternately — 
whorled. The species are mostly unattractive, those 
described below being all that call for mention here. 
For culture, see Ixora. 
P. chontalensis (Chontales). fl. white, in axillary panicles. 
fr. deep blue, usually from forty to sixty on a bunch, presenting 
a very handsome app nce. Nicaragua, 1870, A very orna- 
mental herb, allied to P. cyanococea, but altogether more 
robust and hairy. z pa ' 
P. cyanococca (blue-fruited).* jl. white. fr. brigl blue, ripen- 
ing in winter, and disposed in dense clusters of from thirty to 
forty berries. l elliptic, slightly undulated at the margin. 
Nicaragua, 1870. A dwarf herb. useful as a decorative plant in 
winter. (F. d. S. 1938; F. M. 479.) 
P. jasminifiora (Jasmine-flowered).* fl. snowy-white, sub-sessile, 
in terminal, corymbose panicles; corolla funnel-shaped; tube 
terete, long, graceful; throat dilated ; limb four-parted, spread- 
ing. J. shortly petiolate, coriaceous, ovate-oblong, shortly acumi- 
nate, entire, glabrous above, clothed with white tomentum 
beneath; margins sub-revolute. A beautiful shrub. (B.M. 6454 ; 
G. C. n. s., xii. 200; L H. xviii. 60, under name of Gloneria 
-jasminislora.) 
PSYCHOTROPHUM. A synonym of Psychotria 
- (which see). 
PSYDRAX. A synonym of Plectronia (which see). 
A large genus of small insects, nearly 
related to Aphides, which they resemble in their general 
appearance They feed on the leaves and young branches 
spicate, sub- un 
