88 



THE DICTIONARY OF GARDENING, 



Feziza continued. 



in the sterna 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. Willkommii, 

 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 Ain. in 

 breadth. This Fungus is sometimes referred to P. caly- 

 cina as a variety. 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). OED. Amaran- 

 thacece. 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. gnaphaloides(Gnaphalium-like). fl. white, disposed in solitary 

 heads, on slender peduncles, 7in. to 15in. long. June. I. ten to 

 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. 1ft. 1822. Perennial. 



PFEIFFERA. Included under Rhipsalis (which 

 see.) 



PFEIFFERIA. A synonym of Cuscuta. 



PHACA (from Phalce, an old Greek name applied by 

 Theophrastus to a leguminous plant). Bastard Vetch. 

 OED. Legunninosce. A genus of hardy, herbaceous peren- 

 nials, now included, by Bentham and Hooker, under 

 Astragalus (which see for characters and culture). 



P. alpina (alpine), fl. yellow. July. Pods compressed, half- 

 ovate, acute, smoothish. I. with nine to twelve pairs of oblong, 

 obtuse, pubescent leaflets, h. 1ft. Alps, &c., 1759. (F. D. 856.) 

 The variety dahurica is firmer and more erect, with a harder pod. 



P. bcetica (Bsetic). ft. white, the size and shape of those of 

 Sutherlandia. September. Pods oblong, boat-shaped, com- 

 pressed. I. with seven to ten pairs of ovate, mucronate leaflets, 

 which are villous beneath, h. 1ft. to 2ft. South Europe, &c., 

 1640. (S.F. G.727.) 



P. friglda (cold), fl. cream-coloured. July. Pods stipitate, 

 oblong, inflated, rather hairy. I. with four to six pairs of ovate- 

 oblong, rather ciliated leaflets. Stems erect, glabrous, almost 

 undivided, h. 1ft. North Europe, Ac., 1795. (J. F. A. 166.) 



PHACELIA (from phakelos, a fascicle; in allusion 

 to the disposition of the flowers). STNS. Aldea, Eutoca, 

 Microgenetes, Whitlavia. OED. Hydrophyllaceoe. 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. campanularia (bell-flowered).* fl. deep blue, with a white 

 spot at the base of each sinus, large, broadly campanulate. 

 I. stalked, roundish-oblong, crenate. A. 6in. to Sin. California, 

 1882 Plant much-branched. (B. M. 6735; G. C. n. 8., xx. 135.) 



Phacelia continued. 



P. congesta (crowded), fl., corolla blue, campanulate, almost 

 twice as long as the calyx ; racemes corymbose, rather loose, 

 almost equalling the leaves. June. I. lin. to 2in. long, pinnati- 

 sect ; segments one to four on both sides, unequal, the terminal 

 one larger, and three-lobed. Stem Sin. to 15in. high, erect, 

 flexuous. Texas, 1835. (B. M. 3452.) 



P. divaricata (spreading), fl. light violet, sub-sessile ; corolla 

 rotate-campanulate ; racemes many-flowered, elongated, uni- 

 lateral, longer than the leaves, sometimes axillary, sometimes 

 opposite the leaves. May. I. alternate, petiolate, ovate or 

 oblong, entire, slightly obtuse, lin. to Sin. long. Stems dichoto- 

 mously divaricating, fragile, decumbent. California, 1833. 

 (B. M. 3706 and B. B. 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 Eutoca Wrangeliana.) 



P. Franklinii (Franklin's), fl. blue, sub-sessile ; corolla spread- 

 ing-campanulate ; racemes spike-formed, short. May. I. lin. to 

 3m. 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 lOin. high. Shores of 

 Lake Superior, &c., 1827. (B. M. 2985, under name of Eutoca 

 Franklinii.) 



P. grandlflora (large-flowered). /. light violet-purple, sub- 

 sessile ; corolla lin. to liin. in diameter ; racemes circinate at 

 apex. Early summer. 1. broadly ovate, IJin. long, dentate, sub- 

 cordate at base, wrinkled, and, as well as the stem and calyx, 

 hispid, h. 5ft. California. (B. M. 5029, under name of Cos- 

 manthus grandiflorus.) 



P. Menzlesii (Menzies'). ft. purple, sub-sessile ; corolla Jin. to 

 |in. in diameter, spreading-campanulate, twice as long as the 

 calyx. June. I. hispid, linear, entire, trifid, or pinnatitid, with 

 few, unequal, oblong or linear lobes. Stem erect. A. 1ft. 

 North-west America, 1826. (B. M. 3762 and S. B. F. G. ser. ii. 

 334, under name of Eutoca Menziesii ; B. B. 1180, under name of 

 E. multiflora.) 



P. Parryi (Dr. Parry's), ft. dark violet-blue ; corolla lin. in 

 diameter, almost rotate ; tube very short ; limb expanded, with 

 rounded lobes ; cymes many-flowered, exceeding the leaves. 

 Summer. I. stalked, ovate or ovate-oblong, hairy on both sur- 

 faces; petiole 2in. to 4in. long. h. 6in. to 12in. Southern 

 California. A viscid annual. (B. M. 6842.) 



P. soricea (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. I., lower 

 iximating pinnatifiq, silky on both sides, the lower 

 jolate, extrorse incised ; upper leaves entire, linear. 

 Stem lOin. high. Bocky Mountains, 1827. Perennial. (B. M. 

 3003, under name of Eutoca sericea.) 



P. tanaoetlfolia (Tansy-leaved), fl. bluish-pink ; corolla rather 

 longer than the calyx, campannlate ; racemes spike-formed, 

 elongated, dense-flowered, corymbose. June. I. pinnatisect, 2in. 

 to 6in. long ; segments three to seven each side, with a terminal 

 one, oblong, unequally cut-toothed, the lobes or teeth ovate, 

 acute. Stem sub-erect, h. 2ft. California, 1832. This species is 

 frequently grown as a bee plant. (B. M. 3703; B. B. 1696; 

 S. B. F. G. ser. ii. 360.) 



FIG. 100. PHACELIA VISCIDA, showing Habit and detached 

 Flowering Branchlet. 



P. Visoida (viscid).* fl. blue, purplish ; corolla about Jin. broad ; 

 racemes opposite the leaves, erect, many-flowered, 4in. to Sin. 

 long. July. I. broadly 'ovate, liin. to 3in. long, shortly petiolate, 

 sub-cordate, angulate, serrate ; upper ones deeply or simply 



