AN ENCYCLOPAEDIA 
OF HORTICULTURE. 215 
Pots and Potting—continued. 
alike, regarding moisture, as may be practicable ; either 
extreme must be avoided. 
A strong Potting-bench is always requisite for the 
proper execution of work upon it. Unless the bench is 
firm, Potting on it is unsatisfactory, as the soil cannot 
be pressed or rammed unless the Pot rests upon 
a solid base. The shape and strength of material best 
suited for a strong Potting-bench are indicated in 
Fig. 269. Such a one made strong would last a very 
long time, and could belimoved about to any part of the 
garden, if desired. 
POTTERY-TREE. A common name applied to 
Moquilea utilis. 
POTTLE. Sce Measures. 
POUPARTIA. Included under Spondias (which 
see). 
POUROUMA (the native name in Guiana). ORD. 
Urticacee. Of this genus of trees, about thirty species 
have been enumerated, natives of tropical South America. 
Flowers dicecious, numerously disposed, the males in 
glomerules or ose-paniculate heads, the females in 
cymes ;. aE, are solitary or twin. Mature fruit 
distinct, erect, much larger than in allied genera, Leaves 
alternate, ion stalkod undivided or sometimes on the 
same tree palmately three to five-fid or parted; stipules 
large, very caducous. P. edulis, the only species which 
calls for mention here, requires culture similar to Arto- 
carpus (which see). 
P. edulis (edible). fr. in clusters, of the form and taste of Hazel 
nuts (much esteem by the natives of —— l. green above, 
bluish-white beneath, as large as those of Wigandia imperialis, 
Cold regions of Columbian Cordilleras, 1873. Greenhouse. 
POURRETIA. A synonym of Puya (which see). 
POURRETIA FRIGIDA. A synonym of Dyckia 
frigida (which see). í 
POUS, PODOS. Used in Greek compounds, this 
signifies a foot or stalk; e.g., Podosperm (the same as 
Funiculus), the stalk on which some seeds are borne. 
PRÆCOX. Appearing or developing comparatively 
early. 
PRÆMORSE. Having an irregular, ragged termi- 
nation; appearing as if bitten off. 
PRAIRIE CLOVER. See Petalostemon. 
PRASANTHEA. A synonym of Paliavana (which 
see). ' ; 
PRASINUS. Grass-green. a 
PRASOPHYLLUM (from —— a Leek, and 
phylion, a leaf; in allusion to the similarity which exists 
in the leaves). Orb. Orchidew. A genus comprising 
about twenty-six species of terrestrial orchids ; 
greenhouse, 
two are natives of New Zealand, one is New Caledonian, 
and the rest are Australian. Flowers small, in loose or 
dense, sessile spikes; the perianth often abruptly inflexed 
above the ovary. Leaves in a long sheath, sometimes 
elongated, terete, sometimes reduced to a short mucro. 
The species are of botanical interest only. — 
PRATENSIS. Inhabiting meadows. 
PRATIA (named after M. Prat-Bernon, of the French — 
Harp; soe sapere ee but died a few days 
the expedition sailed). SYN. —— Orb. 
—— A genus comprising about fifteen species 
p paceman season Bien by division. Those d 
Pratia—continued. 
Leaves alternate, frequently broad, toothed. For culture, 
see Lobelia, to which this genus is allied, and from 
which it principally differs in the fruit being a globose 
or obovoid berry, and not a dry capsule. 
P. angulata (angled).* f. white, nearly jin. long, with the 
corolla eee era the extreme base, an F wail de limbs; 
— axillary, slender, 2in. long, ebracteate, Summer. 
*— stalked, —— thick, sub-orbicular, truncate or rounded 
at the base, coarsel: 
with few large, anar Fone g 
1879. An extremely —* ity little creeper for — quite 
hardy. Syn. Lobelia littoralis. 
blue, small, 
———— 
gene Pe — sa August. Jr. 
te, serra! m —* — — 
ite creeping, . Nepaul, 
. Greenhouse, (B. R. 1373.) 7 ~ z 
oxige ay i. base, — 
‘creeping).* white, with a violet tint, over Jin. 1 
—* — nih 8 * ut split at the back; ped —— 
Stem -creepin, — matted, 
red, spreading, white j hairs, Ni 
long, 
PREMNA (from premnon, the Pl of a tree; in 
allusion to the low stems of most species). Syn. 
Baldingera. ORD. Verbenacew. A genus comprising 
upwards of thirty species of glabrous, pubescent, or 
tomentose, stove shrubs, sub-shrubs, or trees, inhabiting 
the warmer regions of the Old World. Flowers white or 
bluish, small, disposed in terminal, trichotomous panicles, 
corolla tube short, cylindrical; limb sp , four-fid. 
Leaves opposite, entire or toothed. Few of species 
are cultivated in this country. They thrive in a compost 
of sandy loam, peat, and leaf mould, and may be increased 
- seeds, or by cuttings. 
d con- 
l. very ahect-aisiked, | ——— y narro at 
dentate. Branchlets and 
above, —— 
——— East Indies, 1827 
olia, P. spinosa. 
. latifolia (broad-leaved). Jl. dis 
on paw tog wa 
unculate panicles; corolla dirty-white. ToN 1 
aran hepara arn * oval, 
or 
, Shining above, 
——— 
2jin. long, 
Beneath. "he Bait: “East nis 182. 
——— IE DRE OT A synonym of P. integrifolia. 
oT spinosa (spiny). A synonym of P. integrifolia. 
herbs, of which six inbabit Central — 
Indies, and the Canary Islands, and the rest are North 
American. Flower-heads homogamons, purple, violet, 
white, or yellowish - white, often slender, drooping, 
loosely | paniculate, rarely in sheathed, racemiform, erect 
panicles; style often long-exserted ; involucre cylindrical, 
often narrow; receptacle flat, naked. Leaves alternate, 
mostly petiolate, sagittate-cordate, deeply pinnatifid or 
lyrate, or the upper ones narrow, sessile, and auriculate- 
amplexicaul, The species are not particularly ornamental. 
They thrive in any ordinary garden soil. All may be 
Perennial speci also by division Those "decribed 
dads viio, bavia papih, of shock 
P. alba. (white "pseu nce pep age 
