1900 SUPPLEMENT—RECENT INTRODUCTIONS, &c. 605 
Pinus—continued. 
oblong, 24in. long, tapering, smooth, drooping, on rather long 
Mexico 
stalks. Branches rather stiff, very leafy. h. 100ft. 
(up to 8000ft.), 1839. 
P. Thunbergi (Thunberg’s).* The correct name of 
P. Massoniana (of Endlicher, not of Lambert). In the form 
variegata the lower part of the leaves is marked with yellow. 
tabulwformis is a dwarf kind, with strong branches. Fairly 
hardy, and a good seaside tree. 
P. Torreyana (Torrey’s). /. in fives, 8in. to 10in. long, stout, 
stiff, pungent-pointed, three-edged ; sheaths sin. to more than 
lin. long. cones 44in. to 54in. Jong, globular or obtusely ovate, 
much resembling those of P. Pinea; seeds very large, with 
a thick crest. Shoots very stout, white-powdery or glaucous 
when young. Lower California, 1860. Syn. P. lophosperma. 
P. uncinata (hooked). A synonym of P. montana, 
P. Veitchii (Veitch’s). A synonym of P. Ayacahuite. 
Fic. 635. PIPTANTHUS NEPALENSIS. 
PIP. A common name for an Apple, Orange, and 
other seed; it is also applied by Anuricula cultivators 
to the individual flowers in a truss. 
PIPER. To the species described on pp. 147-8, 
Vol. IIIL., the following should be added: 
P. metallicum (metallic). J. thick, round, of a beautiful 
metallic green. Borneo, 1882. Stove. 
P. ornatum (ornamental).* 7. peltate, ovate-orbicular, shortly 
pointed, 24in. to 5in. long, 2in. to 4in. broad, bright green, 
marked with pink spots. Celebes, 1884. Stove. 
P. rubro-venosum (red-veined). J. alternate, cordate, acumi- 
nate, bright green, entire, highly glabrous, five-nerved ; nerves 
marked on the upper surface by irregular lines of rose-colour ; 
stipules adnate to the, petioles. 1886. According to N. EK. 
Brown, this is scarcely distinct from M. ornatum. Stove. 
(I. H. 1886, 33.) 
PIPERIDGE. Another name for the Barberry. See 
Berberis. 
PIPES. A word generally applied by gardeners to 
those Pipes employed for heating purposes, but also em- 
bracing those for draining, water, gas, and other purposes. 
The hot-water Pipes for heating glass or other structures 
are usually made in 9ft. lengths, with collars fitted with 
india-rubber or other bands for connecting to each 
other, and the necessary bends, elbows, T-pieces, &c., too 
numerous to name. The sizes of the Pipes vary from a 
diameter of lin. upwards. Practice, however, has proved 
that a din. Pipe is the most useful size for general pur- 
poses about the body of the house; and a 2in. Pipe to 
ron on the roof, near the ventilators, to warm the 
external air as it goes into the structure. In laying or 
fixing hot-water Pipes, there should always be a slight 
ascent to the highest point direct from the boiler, with 
no dip or depression anywhere. As a rule, the sharper 
the ascent the quicker the flow of the hot-water through 
the Pipes. 
PIPINGS. The cuttings of Carnations, Picotees, and 
Pinks are usually termed Pipings, and are made of the 
enrrent year’s growth. Pipings are about 5in, long, and 
the leaves are removed from the lower halves; they are 
then inserted in firm, sandy soil in pots, pans, cold 
frames, or under hand-lights, keeping them rather close 
for a few weeks, by which time they will haye made 
roots. Afterwards they are gradually hardened by ex- 
posure. 
PIPTADENIA. P.. guianensis is a synonym of 
Stryphnodendron guianense (which see). 
PIPTANTHUS. To the species described on p. 148, 
Vol. III., the following should be added : 
P. nepalensis aureus (golden). This only differs from the 
type in having the bark striped yellow and green. 1879. 
See Fig. 635. Syn. Vhermopsis nepalensis aureus. — 
P. tomentosus (downy). This resembles P. nepalensis, but 
is clothed in all its parts with silky tomentum. Yunnan, 
China, 1887. 
PIPTOSPATHA. This genus now embraces four 
species, and is distinguished by the nodding spathe, the 
limb of which is calyptrately deciduous from the tube, 
the latter forming a funnel-shaped cup round the fruiting 
spadix. To the species described on p. 148, Vol. III., 
the following should be added : 
P. Ridleyi (Ridley’s).* j., spathe dull green at base, pink 
above, with darker nerves and dots, closed except at the 
apex, completely hiding the spadix. June. J. erect, 6in. to 
Sin. long, 2in. broad, elliptic-lanceolate, acute at both ends, 
green, with irregular yellowish blotches. Malay Peninsula, 
1893. (B. M. 7410.) 
PIRATINERA. A synonym of Brosimum (which 
see). 
STECOMts: Included under Phytolacca (which 
see). 
PIRUS. See Pyrus. 
PISHAMIN, SWEET. See Carpodinus. 
PISONIA. According to the Kew authorities, 
P. grandis is the correct name of P. inermis. 
PISTOL-PLANT. Sce Pilea microphylla. 
PIT. Sce Pits. 
PITCAIRNIA. To the species described on pp. 150-1, 
Vol. IIL., the following should be added : 
P. arcuata (arched). fl. 3in. long; sepals carmine and yellow; 
pois pale yellow; bracts lanceolate, brownish-red on the 
ower part of the stem, bright carmine on the narrow-cylindric 
spike. Jl. petiolate, lanceolate, acute, 24ft. to 3ft. long, 3in. to 
4in. broad ; petioles spiny. Stem arching, as long as the leaves. 
Colombia, 1882. Syn. Newmannia arcuata (R. H. 1886, p. 108). 
P. coerulea (blue). The correct name of Puya cerulea, 
P. Darblayana (D’Arblay’s). jl. in a loose panicle; sepals 
brick-red ; petals bright red. 1888. A garden hybrid, closely 
allied to P. Maroni. (R. H. 1890, f. 10, 11.) 
P. excelsa (tall). A synonym of P. pulverulenta. 
P. floccosa (woolly). /., petals blue, half as long again as 
the calyx; panicle lax, with numerous ascending, spicate 
branches, densely white-floccose; peduncle as long as the 
leaves. 7. about 100 in a dense rosette, ensiform, acuminate, 
24ft. to 3ft. long, lin. broad, armed with hooked prickles. 
Venezuela, 1847. 
P. jaliscana.* /. in a simple raceme 3in. to 4in. long, shortly 
pedicellntas petals bright red. /. linevr, 6in. long, green, stiffly 
airy on the margins. North Mexico, 1888. Plant stemless. 
(R. G. 1892, f. 77.) An attractive kind that will doubtless be 
introduced, 
P. Klabochorum } (Klaboch’s). 
species, allied to P. pulverulenta. 
P. latifolia. P. furfuracea is a variety of this species. 
P. Maroni (Maron's). A hybrid between LP. corallina and 
P. Altensteinii. 1884. 
P. megastachya (large-spiked). fl. sub-sessile; calyx pale 
rose, downy ; corolla peacock-blue, tubular, 14in. long; panicle 
24ft. high, downy; peduncle shorfer than the leaves, 
7. numerous, thick, coriaceous, arching, 2ft. to 24ft. long, 2in. to 
2sin. broad, shining green above, covered with white felt 
sath, the margins spiny. Andes of Peru, 1873. Syn. Puya 
A tall, copiously-panicled 
P. nigra (black).* i. violet, long, subtended by large, recurving, 
rich coral-red bracts; raceme dense, erect, 1ft. long; sepals 
lin. long; petals 24in. long; peduncle stout, erect, 6in. to Yin. 
long. 2 Yin. to 12in. long, petiolate, oblong-elliptic, acute, 
rreen. Ecuador, 1883. A handsome and very distinct plant. 
SYN. Newmannia niyra (R. H. 1881, p. 390). 
