PIS PIT 1 PIT PLA 
P. aculeata is remarkable for its spiny branches, 
and for its glutinous and burry seeds, which fasten 
to whatever touches them. A mixture of peat 
and loam suits them best, and they are easily pro- 
pagated by cuttings in the same sort of soil, 
aculeata . . . Green. . S. Ev. T. Jamaica . 1739 
fragrans ... S. Ev. S. . 1823 
grandis .... S. Ev. T. N. HolL . 1806 
hirteUa .... S. Ev. S. Mexico . . 1825 
macrophvlla . . S. Ev. S. . 1823 
mexiclna ... S. Ev. S. Mexico . . 1824 
nigricans . . . Gm. wht . S. Ev. S. W. Ind. . 1806 
nitida .... S. Ev. S. Madagas. . 1824 
obovata .... S. Ev. S. . 1823 
obtusata ... S. Ev. S. W. Ind. . 1824 
eubcordata ... S. Ev. S. Jamaica . 1821 
PisTACHiA-TRBE, See Pisidciu. 
PiSTACiA, Linn. Altered from Foustaq, its Arabic 
name. Linn. 22, Or. 5, Nat. Or. Terebinthacece. 
Ornamental plants. The greenhouse kinds thrive 
in loam and peat, and cuttings of the ripened wood 
root in sand, under a glass. The hardv species do 
best planted against a wall, as they are rather 
tender ; common garden soil suits them, and they 
may be increased by layers, or cuttings in sandy 
soil under a glass. S^nonymes : 1. P. Lentiscua 
masailienais. 2. P. qfficinarutn. 3. P. retictUata. 
atlanticit . . . Apctal . F. De. T. Barbary . 1790 
Lentiscus . . . Ap«Ul . 6, G. Ev. T. S. Eur.' . . 1654 
angustifdlia, 1 Apctal . 5, H. Ev. T. .S. Eur. . . 
chU .... A petal . 6, H. E%-. T. Scio . . . 
TereblntliTis . . Apetal . 6, H. De. T. S. Eur. . . 1656 
spheerocArpA . Apetal . 6, H. Ev. T. 
vera, 2 ... . Apetal . . 5, H. De. T. Syria . .1770 
narbonensis, 3 . Apetal . 4, H. De. T. Narbonne . 1752 
triflorA . . . Apetal . 5, H. De. T. Syria . . 
PiSTiLLUM, or PISTIL, the columnar body in the centre 
of a flower, consisting commonly of three parts; 
viz., the ovary, styles, and stigmas. 
PisTiLuiRiA, Friea. From piatillum, a pestle; form 
of the plants. Linn. 24, Or. 9, Nat. Or. Fungi. 
The species constituting this genus are chiefly 
found on the decayed leaves of ferns — P. mlcdna, 
muacicbla, puberiild, puaJHd, quiaquilidria. 
PistorTnIa-, DecandoUe. The meaning is unknown 
to us. Linn. 10, Or. 5, Nat. Or. Craaaulacece. The 
sefds merely require sowing in light soil in any 
dry situation in the open border, or on rock-work, 
where it has a pretty appearance. Synonyme : 1. 
Cotyledon hiapanica. 
hifipAnIcA, 1 . . Red . . 6, H. B. Spain . . 1796 
PisuM, Linn. From pia, the Celtic word for pea; 
whence the Latin piaum. Linn. 17, Or. 4, Nat. Or. 
Leguminoace. This genus affords one of the most 
valuable and well-known legumes, the Pea, and 
like most cultivated vegetables, it has produced 
nur... JUS improved varieties, growing from a foot 
to twelve feet high. They prefer a rich dry soil, 
in which they may be sown at any season, accord- 
ing to the time when they are wanted. 
americAnum . . Purple . 7, H. Her. P. S. Amer. . 1800 
nrvensA . . . Red . . 7. H. Cl. A. S. Eur. . . 
elatum . . . Drk. blue . 7i H- Cl. A. Iberia . . 1820 
JomArdI . . . White . . 7. H. Cl. A. Egypt . . 1820 
mariilmfim . . Purple . 7f H. Her.P. England . 
sativum . . . White . . 7, H. Cl. A. S. Eur. . . 
humile . . . WTiite . . 7, H. Cl. A. 
macrooArpum . White . • 7, H. Cl. A. 
quadrAtum . White . . 7, H. Cl. A. 
saceharatiim . White . . 7, H. Cl. A. 
umbellAtiim . Purple . 7 H. Cl. A. 
thebAicum . . . 7, H. Cl. A. . 1825 
PrrcAiRNiA, L'Hdritier. In honour of \V. Pitcairn, a 
physician of London. Linn. 6, Or. 1, Nat. Or. 
Bromeliacete. A handsome genus of plants, remark- 
able for their long narrow prickly leaves, and 
regular panicles of flowers; for culture, &c., see 
Tillandaia. 
AJhlflfts .... White. . 9, S. Her. P. Braril . .1824 
angustifOlIA . .Scarlet . S. Her. P. SanU Cruz . 1777 
bromelisefOliA . . Scarlet . 6, S. Her. P. Jamaica . 1781 
bracteAtA . . . Scarlet . 4, S. Her. P. W. Ind. . 1799 
chilAnsIs . . . Scarlet . 7, S. Her. P. Chile . . 1820 
flAmmAA . . . Flame . 11, S. Her. P. Rio Jan. . 1825 
furfurAcAA . . . Red . . 7. S. Her. P. S. Amer. . 1816 
h&mllls'. . . . Scarlet . 7> S- Hex. P. S. Amer. . 1820 
integrifdliA . . . Red . . 8, S. Her. P. W. Ind. . 1800 
intermAdIA . . . Scarlet . 7, S. Her. P. S. Amer. . 1820 
iridiflArA . . . Scarlet . 7, S. Her. P. S. Amer. . 1820 
latifOlIA . . . Scarlet . 8, S. Her. P. W. Ind. . 1785 
medIA .... Scarlet . 7. S. Her. P. S. Amer. . 1320 
stamlnAA . . . Scarlet . 1,S, Her. P. S. Amer. . 1823 
suaveolens . . . Yellow . 7, S. Her. P. Brazil . . 1824 
sulphurAA . . . Yellow . 8, S. Her., P. W. Ind. . 1797 
PiTCHER-LBAF, SBC NcpSuthSa Phylldtnphdrd. 
Pitcher-plant, see NepSnthia. 
Pitchers, hollow leaves, having the appearance of 
pitchers. 
Pith, medulla, occupying the centre of a stem or 
shoot. 
PittosporOm, Banka. From pitte, to pitch., and 
aporoa, a seed ; the seeds are covered with a resi- 
nous pulp. Linn. 5, Or. 1, Nat. Or. Pittoaporacece. 
All the species are very handsome shrubs, on 
account of their glossy foliage and pretty flowers, 
which render them well adapted for conservatories. 
P. Tobira will succeed against a south wall, with 
the protection of a mat in severe weather. All the 
species thrive well in a mixture of peat and loam, 
and ripened cuttings root in sand, under a glass. 
Synonyme: 1. P. hirautum. 
Andersonn . . Yellow . 6, G. Ev. S. N. Holl. . 1820 
angustifolium . . YeUow . 6, G. Ev. S. N. S. W. . 1830 
bracteolatum . . G. Ev. .S. Norfolk Is. 1837 
capensA .... . 5, G. Ev. S. . 1820 
coriAcAum . . . Blue . . 5, G. Ev. S. Madeira . 1783 
cornifblium . . Brown . 5, 0. Ev. S. N. Zeal. . 1827 
ferrugInAum . . Yellow . 3, G. Ev. S. Guinea . . 1787 
fulvum .... Yellow . 4, G. Ev. S. N. Holl. . 1820 
hirtum, 1 . . . Yellow . 5, G. Ev. S. Canaries . 1822 
ligustrifAlIiim . . . 9, G. Ev. S. N. Holl. . 1823 
mauritiAnum . . Yellow . 5, 0. Ev. S. Mauritius . 1825 
oleifollum ... G. Ev. S. N. Holl. . 1823 
revolutum . . . Yellow . 3, G. Ev. S. N. HolL . 1795 
lenuifoUum . . . 5, G. Ev. S. N. HoU. . 1820 
TobIrA .... White . . 5, G. Ev. S. Japan . .1804 
tomentftsum . . Yellow . 7. G. Ev. S. N. Ho'l. 1824 
undulAtum . . . Wht. grn. 4, 0. Ev. S. N. S. W. .1789 
variegAtum . . Wht. yel. 4, G. Ev. S. Gardens . 
riridiflOrum . . Green . . 5, G. Ev. S. C. G. H. . 1806 
Placenta, that part of the capsule to which the seeds 
are attached. 
Plapera, Roxburgh. From pladaroa, abounding in 
juice. Linn. 4, Or. 1, Nat. Or. Gentianacece. The 
seed of these plants should be sown on a hot-bed, 
and treated similarly to balsams. 
decussAtA . . . White . . 8, 0. B. W. Ind. . 1816 
virgAta ... Red . . 7, G. B. E. Ind. . .1820 
PlagianthOs, Forater. From plagioa, oblique, and 
anthoa, a flower ; direction of the flowers. Linn. 
16, Or. 7, Nat. Or. Euphorbiacece. These plants 
grow well in any rich light soil, and cuttings of the 
voung wood root freely in sand, under a glass, in 
heat. 
divaricAtus, 1 . .Red . . 6, G. Ev. S. N. Zeal. . 1822 
sidoldes, 2 . . . Yelrii. . . 9, ». Ev. S. V. D. L. . 
Pi.AOiOB6TRirs, Fiacher and Meyer. From plagioa, 
transverse, and bothrya, a pit ; the pits at the base 
of the carpels are transverse, and not longitudinal. 
Linn. 5, Or. 1, Nat. Or. Boragmacece. A hardy 
annual, not worth cultivating except in botanic 
gardens — P. rufSaclna. 
PlagiolobiDm, dweet. From plagioa, transverse, and 
loboa, a pod; alluding to the shape of the pod. 
Linn. 17, Or. 4, Nat. Or. Lcguminoace. A genus of 
very beautiful greenhouse plants. For culture and 
propagation, see Hovea. 
chnrozemsefullum Purple . 3, G. Ev. 8. N. HolL . 1824 
UicifOlium . . . Purple . 3, G. Ev. S. K. G.’s Sd. . 1824 
Planera, Michaux. In honour of J. Planer, a Ger- 
man botanist. Linn. 4, Or. 3, Nat. Or. Ulmacea. 
A genus very nearly related to Ulmua, growing 
freely in a loamy soil, in moist situations ; they 
may be multiplied by layers or grafts. Synonymea : 
1. Planera aquatica. 2. Ulmua nemoralia. 
Gmellnl, 1 . . . Brown . 4, H. De. T. N. Amer. . 1816 
RichArdI, 2 . . Brown . 4, H. De. T. N. Amer. . 1760 
Plane tree, see Platdniia. 
Plank plant, see Boaaiad acoloplndrid. 
Plantago, Linn. Derived from planta, the sole of 
the foot; resemblance in the leaves. Linn 4, Or. 
1, Nat- Or. Plantaginacea. A genus, the greater 
number of the species of which are mere weeds, 
of the easiest culture and propagation. Syno- 
nymea: 1. P. apharocephala. 2. P. criapa. 3. P. 
rigida. 4. P. Cornuti. 5. P. Cornuti. 6. P. alpina. 
IspaghulA . . . White . 6, H. A. E. Ind. . .1824 
Kentuckensis . . White . 6, H. Her. P. N. Amer. . 1829 
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