88 THE DICTIONARY 
OF GARDENING, 
Peziza—continued. 
in the stems between the surface-layer and the wood. 
The infested plants ought to be burned, to prevent the 
spread of the disease, and this should be done early 
in the season, before the sclerotia have fallen to the 
soil. The structure of P. postuma is shown in Fig. 98. 
Another Peziza of some importance is P. Willkommit, 
which grows on resinous swellings upon the branches of 
Larch. The cups are sessile, or shortly stalked, hairy, 
and pale outside, orange inside, and are about in. in 
breadth. This Fungus is sometimes referred to P. caly- 
cina as avariety. The diseased branches gradually wither 
and, in time, the tree is destroyed. Some writers believe 
that the Fungus does not originate disease, but only 
settles on punctures made by Aphides. In any case, 
the dying branches should be burned, to prevent the 
spread of the disease to other trees. 
PFAFFIA (named in honour of C. H. Pfaff, 1774- 
1852, Professor of Chemistry at Kiel). ORD. Amaran- 
thaceew. A genus comprising about fifteen species of 
- slender, erect, stove herbs, natives of Brazil. Flowers in 
dense spikes or heads; perianth five-parted, with sub- 
equal segments. Leaves opposite, sessile or nearly so, 
entire. For culture of P. gnaphaloides, the only species 
introduced, see Celosia. 
P. - E soli 
e o fries pa te 
fifteen lines long, two to four lines broad, almost erect, soft ; lower 
ones oblong or oblong-ovate, obtuse, slightly mucronulate ; upper 
ones narrow-linear, h. lft. 1822. Perennial. 
PFEIFFERA. Included under Rhipsalis (which 
see.) 
PFPEIFFERIA. A synonym of Cuscuta. 
PHACA (from Phake, an old Greek name applied by 
Theophrastus to a leguminous plant), Bastard Vetch. 
ORD. Leguminose. A genus of hardy, herbaceous peren- 
nials, now included, by Bentham and Hooker, under 
Astragalus (which see for characters and culture). 
P. alpina (alpine). ow. July. Pods compressed, half- 
ovate, ‘coal 1 ane for to twelve pairs of oblong, 
obtuse, pubescent leaflets. R. lft. Alps, &c., 1759. (F. D. 856.) 
variety dahurica is firmer and more erect, with a harder pod. 
P. bætica (Betic). fl. white, the size and f those of 
Sutherlandia. . — — boatshaped, eom: 
1640. (S. F. G. 727.) 
oblong, rather ciliated leaflets. Stems er la 
undivided. h. lft. North Europe, &c., 1288. f. n 
PHACELIA (from phakelos, a fascicle; in allusion 
to the disposition of the flowers). Syns. Aldea, Eutoca, 
Microgenetes, Whitlavia. ORD. Hydrophyllacee. A genus 
comprising fifty species of mostly hardy, annual or 
perennial herbs, usually scabrous-pubescent or hispid, 
sometimes erect, tall, and simple or branched, occa- 
sionally dwarf, diffuse, and much-branched or tufted; 
they are mostly natives of Western North America, 
Mexico, and the Chilian Andes. Flowers blue, violet, 
or white, disposed in terminal cymes, which are usually 
pedunculate or reduced to a simple raceme; calyx 
lobes linear, lanceolate, or oblong; corolla campanu- 
late or sub-rotate, rarely tubular or funnel-shaped; 
stamens five, exserted or included. Leaves pinnately 
lobed or dissected, rarely undivided, deeply toothed, or 
entire. The species thrive in any ordinary garden soil. 
The perennials may be increased by divisions, and the 
annuals by seeds. The best-known species, some of 
which are rather ornamental, are described below; they 
are annuals, except where otherwise stated. 
P. (bell-flowered).* H. deep blue, with a white 
spot the base of each sinus, broadly campanulate. 
l. stalked, rou , crenate. 6in. to 8i Californi 
1882, Plant much-branched. (B. M. 6735; G. C. n. s., xx. 135. 
Phacelia—continued. 
P. congesta (crowded). f., corolla blue, campanulate, almost 
twice as long as the calyx; racemes corymbose, rather loose, 
almost equalling the leaves. June. J. lin. to 2in. long, pinnati- 
sect ; segments one to four on both sides, unequal, the terminal 
one larger, and three-lobed. Stem Sin. to ldin. high, erect, 
flexuous. Texas, 1835. (B. M. 3452.) 
P. divaricata (spreading). fl. light violet, sub-sessile ; corolla 
rotate-cam te; racemes many-flowered, elongated, uni- 
lateral, longer than the leaves, sometimes axillary, sometimes 
opposite the leaves. May. l. alternate, petiolate, ovate or 
oblong, entire, slightly obtuse, lin. to 3in. long. Stems dichoto- 
mously divaricating, fragile, decumbent. California, 1833. 
(B. M. 3706 and B. R. 1784, under name of Eutoca divaricata.) 
P. d. Wrangeliana (Wrangel’s). A variety with sometimes 
three-lobed, radical leaves, S. B. F. G. ser. ii. 362, under name 
of Eut Wrangeli ) 
P. Franklinii (Franklin’s). f. blue, sub-sessile ; corolla spread- 
ing-campanulate ; racemes spike-formed, short. May. J. lin. to 
šin. long; radical ones clustered, cauline ones alternate, all 
lanceolate, pinnate-parted ; lobes seven to ten, oblong, entire or 
irregularly two to five-lobed. Stem 6in. to 10in. high. Shores of 
Lake Superior, &c., 1827. (B. M. 2985, under name of Hutoca 
Franklinii.) 
P. grandiflora (large-flowered). f. light violet-purple, sub- 
sessile; corolla lin. to lin. in diameter; racemes circinate at 
apex. Early summer. l. broadly ovate, liin. long, dentate, sub- 
cordate at base, wrinkled, and, as well as the stem and calyx, 
hispid. R. 5ft. California. (B. M. 5029, under name of - 
manthus qrandiflorus.) ‘ i 
P. Menziesii (Menzies’). f. purple, sub-sessile ; corolla gin. to 
Zin. in diameter, sp -campanulate, twice as long as the 
calyx. June. J, hispid, linear, entire, trifid, or pinnatifid, with 
few, unequal, oblo; or linear lobes. Stem erect. h. lit. 
North-west America. (B. M. 3762 and S. B. F. G. ser. ii. 
334, under name of Eutoca Menziesii; B. R. 1180, under name of 
E. multiflora.) 
P. Parryi (Dr. Parry’s). fl. dark violet-blue; corolla lin. in 
diameter, almost rotate; tube very short; limb expanded, with 
rounded lobes; cymes many-flowered, exceeding the leaves. 
Summer. f. stalked, ovate or ovate-oblong, hairy on both sur- 
faces; petiole 2in. to din. long. k. bin. to 12in. Southern 
California. A viscid annual. (B. M. 6842.) 
P. sericea (silky). fl. bluish-purple ; corolla sub-campanulate, as 
long as the calyx; racemes spike-formed, compound, terminal, 
much longer than the leaves, dense-flowered. June. Z., lower 
ones approximating pinnatifid, silky on both sides, the lower 
lobes lanceolate, extrorse_incised ; upa leaves entire, linear. 
Stem 10in. high. Mountains, 1827. Perennial. (B. M. 
3003, under name of Eutoca sericea.) s 
„ tanacetifolia (Tansy-leaved). fl. bluish-pink; corolla rather 
longer than the calyx, campanulate; racemes spike-formed, 
elongated, dense-flowered, corymbose. June. Z. pinnatisect, 2in. 
to 6in. long; segments three to seven each side, with a terminal 
one, oblong, unequally eut-toothed, the lobes or teeth ovate, 
acute. Stem sub-erect. 2ft. California, 1832. This species is 
(B. M. 3703; B. 1696 ; 
frequently wn as a bee nt. 
Saad F Goer ii. 360.) we 
5 r ANA PRN 
Te AN x 
s she ng A — 
PP 
Flowering 
P. viscida (viscid).* fl. blue, purplish ; corolla about zin. broad; 
racemes opposite the leaves, erect, many-flowered, 4in. to 8in. 
long. July. J. broadly ovate, 1sin. to Zin. long, shortly petiolate, 
sub-cordate, angulate, serrate; upper ones deeply or simply 
Fie. 100. PHACELIA VISCIDA, showing Habit and detached 
Branchlet. 
