1900 SUPPLEMENT—RECENT INTRODUCTIONS, 
&C. 627 
PUERARIA. According to the ‘Kew Bulletin,” 
1892, Pachyrhizus Thunbergianus, Dolichos hirsutus, and 
D. japonicus are synonyms of Pueraria Thunbergiana. 
(R. H. 1891, p. 31, f. 8.) 
eT A synonym of Griselinia (which 
see). 
PULMONARIA. To the species described on p. 251, 
Vol. III., the following should be added: 
P. arvernense. This is a garden name for a beautiful kind 
having deep blue flowers in clusters. There is also a white 
variety. 
P. azurea is a variety of P. angustifolia. 
P. grandiflora is a synonym of P. saccharata. 
P. mollis (soft). @. as in P. officinalis. June. Jl. softly 
pubescent; radical ones elliptic-lanceolate or lanceolate, 
decurrent into broadly winged petioles; cauline ones ovate- 
lanceolate, semi-amplexicaul. , 9in. Pyrenees. 
PULP. The soft, juicy inner part of a fruit. 
PULTENZEA. To the species described on pp. 251-2, 
Vol. III., the following should be added: 
P. Gunni (Gunn's). 7. golden-yellow, with brownish-purple 
stripes on the standard and a brownish-purple keel, small; 
heads three- to five-flowered, terminating the branchlets. 
7. very small, linear-lanceolate. Branches twiggy. 1885. (R. G. 
1173 [1174 in text).) 
P. linophylla (Linum-leaved). The correct name of P. retusa. 
P. sylvatica (sylvan). A synonym of Oxylobiwm ellipticum 
(Pultenee). 
P. Ausfeldi has also been introduced. 
PULVINARIA. A genus of very distinct Scales, 
so named on account of the cushion or pad of white wax 
which the female secretes at the hinder extremity of 
and beneath her body. The species of interest to the 
gardener are P. ribesiw, found on Currants (see Currant 
Scale); P. vitis, on Vines; and P. floccosa, on Camellias. 
For remedies, see Scale Insects. 
PUPALIA. Syama is synonymous with this genus. 
PURPLE-FLOWERING RASPBERRY. ‘ee 
Rubus odoratus. 
PURPLE LOOSESTRIFE. See Lythrum Sali- 
caria. 
PURPLE OSIER. See Salix purpurea. 
PURSHIA. This genus now embraces a_ second 
species, in addition to that described on p. 253, Vol. IIT. 
P. glandulosa (glandular). jl. yellowish-white, with a Cinna- 
mon-like odour, small, numerous. North-west America, 1898, 
A dwarf shrub, resembling P. tridentata. 
PUYA. J. G. Baker refers fourteen species to this 
genus. Several plants formerly included here are now 
classed under Pitcairnia. To the two species described 
on p. 255, Vol. III., the following should be added : 
P. chilensis (Chilian). 7. Peer eg etals twice as 
long as the calyx; panicle dense, rhomboid, 2ft. to 3ft. long, 
with crowded branches; lower bracts lin, long; peduncle 
erect, much longer than the leaves. July. J. 100 or more in 
a rosette, ensiform, acuminate, 3ft. to 4ft. long, I4in. broad, 
vertically lined on the back, armed with large, distant, horny 
spines. Caudex 6ft. to 10ft. long. Chili, &c., 1820. (B. M. 
4715; F. d. S. 869-70; R. G. 225.) Syn. P. coarctata. 
P. c. gigantea (gigantic). J. erect, with shorter and more 
robust prickles. Caudex 10ft. to 15ft. long. 
P. coarctata (coarctate), A synonym of P. chilensis. 
P. coerulea. The correct name is Pitcairnia coerulea. 
P. lanuginosa (woolly). jl. greenish-blue, borne in a dense, 
simple spike lft. long by Sin. in diameter, surmounting a stout 
peduncle 3ft. long; flower bracts lanceolate, acuminate, very 
woolly, whitish-brown on the back; sepals obtuse, much imbri- 
cated; petals oblong-obovate, the blade jin. broad. October. 
7. sixty to 100 in a dense rosette, ensiform, 2ft. to 24ft. long, 
lin. broad low down, tapering to a long point, green above, 
white below, beset with distant, ascending spines. Trunk 2ft. 
to 3ft. high, forked at the top, hidden by old, dead, reflexed 
leaves. This plant flowered for the first time at Kew in 1888. 
P. Roezli (Roezl’s). A synonym of Pitcairnia megastachya. 
P. Thomasiana (Thomas's). A_ tall-growing species with 
bluish-green flowers. South-west Colombia, 1899. (B. H. 18995 
p. 452.) 
P, virescens is a synonym of Caraguata virescens. 
P. Whytei (Whyte’s). A synonym of Pitcairnia coerulea. 
PYCNANTHEMUM (from pyknos, dense, and 
anthemon, a blossom; in allusion to the dense inflo- 
rescence). Mountain Mint. Syns. Brachystemum, Koellia, 
Tullia. ORD. Composite. A genus embracing about 
seventeen species of mostly hardy, erect perennials, with 
a pungent, Mint-like flavour, confined to North America, 
and allied to Origanwm. Flowers whitish or purplish, 
the lips of the corolla mostly dotted with purple; whorls 
many-flowered, dense, crowded with bracts, usually 
forming terminal heads or close cymes. Stems often 
corymbosely branched aboye. Only two species have been 
introduced. For culture, see Perennials. 
P. lanceolatum (lanceolate). #. in small, numerous, capitate 
clusters, villous-canescent ; bracts ovate. Summer. J. lanceolate 
or almost linear, nearly sessile, entire, very numerous, obtuse at 
base. Stem somewhat pubescent. 
P. muticum (curtailed). jl. white, in very dense clusters at 
the ends of the branches and in the uppermost axils. Summer 
and autumn. /. ovate, broadly ovate-lanceolate or lanceolate, 
rather rigid, acute, mostly sessile and minutely toothed. 
h. lft. to 2sft. 1897. Plant minutely hoary, pleasantly 
aromatic. Syn. P. piloswm. 
P. pilosum (pilose). A synonym of P. muticum. 
PYRALIDINA. See Moths. 
PYRETHRUM. To the species and _ varieties 
ceverped on p. 257, Vol. III., the following should be 
added : 
P. Decaisneanum (Decaisne’s). jl.-heads pale yellow, radiate, 
larger than those of C. marginatwm. Autumn. J. obovate, 
pinnatifid. hk. 1ft. to 1sft. Japan, 1887. Syn. Chrysanthemum 
Decaisneanum. 
“Pp. diversifolium (variable-leaved), A synonym of Brachycome 
diversifolia. 
P. marginatum (margined). /l.-heads deep yellow, small, 
disposed in rounded corymbs. Autumn. J/. cuneate-oblong, 
pinnatitid in the upper third, tomentose beneath and on the 
edge. Stems tomentose. Japan, 1887. Syn. Chrysanthemum 
marginatum. 
P. Mawii (Maw’s). /l.-heads lin. to 14in. across, on rather long 
peduncles; rays about twenty, white, rose-coloured at back, 
broadly linear-oblong, three-toothed. August. J. scattered, 
about lin. long, triangular to oblong, pinnatifid. Branches 1ft. 
to 14ft. high. Rootstock woody. Greater Atlas, 1871. (B. M. 
5997.) 
P. multifidum (much-cleft). .-heads white, long-pedicellate, 
resembling Marguerites ; corymb large, very many-flowered. 
Summer. J. petiolate, pinnatifid, finely cut. h. 1sft. to 2ft. 
Orient. A branched, tufted, whitish-pubescent, hardy perennial, 
(R. H. 1896, p. 449, f. 152-3.) 
P. parthenifolium aureum selaginoides (Selaginella- 
like). JZ. flat, shallowly lobed, so cut as to resemble a sprig of 
Selaginella, of a bright yellowish-green. 1882. 
P. p. glaucum (glaucous). This variety differs from the type 
in having glaucous leaves. 1895. 
P. Starckianum (Starck’s). jl.-heads white, large. /. deeply 
cut. h. lft. Caucasus, 1697. A greyish-tomentose alpine. 
Varieties. The beautiful varieties, both single and 
double, which florists have of recent years evolved, are 
superior to the species. They are amongst the finest of 
hardy perennials, and will flower a second time if eut 
down, say after the first display is over in June. They 
like a well-trenched, loamy soil, and plenty of water 
during dry seasons. A selection of the two sections is 
given below: 
Single Pyrethrums. AGNES Mary KELWay, APOLLYON, 
Ascot, BEATRICE KELWAY, CASSIOPE, CLEMENCE, COMET 
DECOY, FIREFLY, GENERAL FRENCH, JAMES KELWayY, KLEI 
HOLTZ, MARY ANDERSON, MERRY HAMPTON, MR. SANT 
OLIVER TWIST, PETER BARR, PRINCESS CHARLOTTE, PRIN 5 
MARIE, PRINCESS OF WALES, QUEEN OF THE MARKET, ROSETTA, 
YELLOWSTONE. 
Double Pyrethrums. ALFRED, ALFRED HENDERSON, 
ANEMON®FLORA, APHRODITE, CARL VOGT, EMPRESS QUE 
FIGARO, FLORENTINE, KiNG Oscar, LADY KILDARE, LEONARD 
KEtWAy, Lorp ROSEBERY, MAGICIAN, METEOR, MILTON, 
ORMONDE, PERICLES, PRIMROSE, QUEEN SOPHIA, SHOTOVER, 
SOLFATERRE, WILSON BARRETT. 
PYROLA. P. wnijlora is a synonym of Moneses 
grandiflora. 
PYROSTRIA. A synonym of Timonius (which 
see). 
PYRULARIA. P. pubera is the correct name of 
P. oleifera. 
