AN ENCYCLOPEDIA OF HORTICULTURE. 



237 



br 



Pnums continued. 



pubescent pedicels. April fr. purple or crimson, with a bloom, 

 globular, Jin. to 1 in. in diameter, the stone very turgid. L ovate 

 or oval, finely serrated, softly pubescent beneath. A. 2ft. to 3ft. 

 North America, 1800. Plant straggling. 



P. Maine (Mume). fl. appearing early, usually twin, sub-sessile. 

 fr. globose, very slightly velvety ; stone oval, convex, foveolate. 

 1. rounded at base, obovate or broadly elliptic, long-cuspidate, 

 argutely duplicate-serrated, glabrous or mostly pubescent- 

 scabroi* beneath. Japan. (S. Z. F. J. ii.) 



P. nlgra (black). A synonym of P. americana. 



P. panicolata (paniculate). A synonym of Cerasut pteudo- 

 ceranu. 



P. pennsylvanica (Pennsylvania^ American Wild Red 

 fl. white, many in a cluster, on long pedicels. May. fr. li 

 red, globose, very small, with thin and sour flesh ; stone globu 

 1. oblong-lanceolate, pointed, finely and sharply serrated, shining, 



feen and smooth on both sides. Bark light reddish-brown. 

 20ft to 30ft. North America, 1773. See Fig. 30L 

 P. Persica (Persica). A synonym of Pergica vulgarit. 

 P. Pissardil (Pissard's)." JL white. March and April, fr. small, 

 or hardly medium size, somewhat oval, deep red or purple, even 

 hen very young ; flesh pulpy, sugary when mature. I. glabrous, 

 roadly oval, red-purple. Twigs glossy black. A handsome, orna- 

 ental shrub or small tree, introduced to Europe, a few years 

 ago, from Persia. (R. H. 1881, 190.) 

 P. pnmila (dwarf). This is the correct name of the plant de- 



scribed in this work as Ceratus depretsa. 



P. salicifolia (Willo^leayed). fl. white, small, growing singly 

 or several together. April, fr. about the colour and size of 

 those of P. ceratifera. L obovate, acuminate, glossy and rngulose 

 above, quite smooth beneath, finely serrulated, the serratures 

 minutely glandular ; petioles short, without glands. China. 

 P. <fftn8ls (Chinese).* fl. white, small, disposed in clusters along 

 the shoots. Spring, fr. small, globular, deep red, of peculiar 

 but agreeable flavour. 1. oblong, acuminated, serrulated. 

 China, 1869. Of this species, there are varieties with rose and 

 double white flowers. See Fig. 302. 



P. spinosa (spiny). Blackthorn or Sloe. fl. white, rising before 

 or with the leaves, on solitary peduncles. Spring, jr. black, 

 roundish, sour or acid. I. obovate-elliptic or ovate, smooth 

 except when young, sharply and doubly serrated, h. 10ft. to 

 15ft. Europe (Britain). A well-known, deciduous shrub, with 

 spinose branches. (Sy. En. B. 408.) There are two or three 

 varieties, including double-flowered, variegated-leaved, large- 

 fruited, and egg-shape-fruited, forms. 



P. subhirtella (somewhat hairy), fl, white, with a red calyx, 

 small, borne three or four together on the short growths. I. small, 

 ovate, acuminate. Branches pendent, with slender branchlets. 

 h. 10ft Japan, 1868. An elegant tree. SYN. Cerastu pendula. 

 P. triloba (three-lobed). fl. white or rose, generally double, 

 large. Early spring. L three-lobed, appearing after the flowers. 

 h. 6ft China, 1657. ' ' ' 



SYKS. P. virgata 

 xv. 1532; ^ 

 1883, 367). 

 P. virgata (twiggy). A synonym of P. triioba. 



PRURIENT. Stinging ; causing an itching sensation. 

 FSAMMA (from psammos, sand ; alluding to the 

 nse to which the species are put). Marrem Grass. OBD. 

 Graminea. A small genus (two species) of hardy grasses, 

 inhabiting the shores of Europe (Britain) and North 

 Africa. Spikelets in a contracted panicle, much laterally 

 compressed, one-fid ; empty glumes two, scarcely exceed- 

 ing the flowering ones, rigid, long, narrow, keeled; flower- 

 ing glumes rigid, slightly pedicelled, with an oblique 

 callus, and a small pencil of silky hairs at the base. 

 P. arenaria is, on some parts of the coast, employed for 

 binding sea sandbanks ; it is also used for making mats 

 and thatch. It grows freely in any sandy soil, and may be 

 raised from seeds, but is most readily increased by cutting 

 the long, creeping rhizomes into pieces, and planting them 

 where required. 



P. arenaria (sand-loving), fl., spikelets erect ; pedicels scabrid ; 

 panicle white, sub-<*ylindric, Sin. to 6in. long, straight, broadest 

 and sometimes lobed at base, the branches short July. 



, 1857. A very handsome, early-flowering shrub. 

 \ta (of gardens), Amygdalopsis Lindleyi (F. d. S. 

 G. 1863, 53 and 54), Prunoptis Lindleyi (R. H. 



i. long, rigid, convolute, polished without, scabrous and glaucous 

 within ; sheaths long ; ligule very long, bifid. Stems 2ft. to 4ft 

 high. Rootstock widely creeping. 



ligule very long, bifid. Stems 

 (Sy. En. B. 1722.) 

 P. baltica (Baltic), 

 differs in its looser, less cylindric panicles. (J. B., 1872, 127.) " 



PSAMMISIA (named after Psammis, or Psammites, 

 a King of Egypt, B.C. 376). OBD. FaectmacacB. A 

 genus comprising nearly thirty species of stove or warm 

 greenhouse, branched, sometimes epiphytal shrubs, natives 



Psammisia continued. 



of the Andes and the mountains of Venezuela and 



Guiana. Flowers frequently scarlet, rather large, dis- 



posed in axillary racemes or corymbs, rarely solitary or 



fascicled ; calyx urceolate-campannlate, with a five-lobed 



or toothed limb; corolla tubular, ventricose or rarely 



conioo-globose at base, with a five-lobed, erecto-patent 



limb; bracts sometimes pink. Leaves alternate, per- 



sistent, coriaceous, sessile or petiolate, entire or sub- 



serrate. The species best known in gardens are here 



described. For culture, see Thibaudia. 



P. Hookeriana (Hooker's).' fl. (including the calyx) deep rose- 



red, paler at the mouth, nearly lin. long, disposed in axillary and 



sub-terminal, four to six-flowered racemes. September. L alter- 



nate, on short petioles, oblong-obovate, acuminate, but usually 



rather obtuse. A. lift to 2ft (in its native place 6ft to 12ft). 



Columbia, (B. M. 4344, under name of Thibaudia pichinchenti* 



glabra.) SYN. P. pichinchenni* glabra. 



P. Jessica (Mrs. John Bateman's).* fl. pale red, fin. long, 

 between oblong and cylindric, fleshy; racemes short, solitary, 

 from ten to twelve-flowered. September. L ovate or ovate- 

 lanceolate, 6in. to lOin. long, shortly petioled, rounded at the 

 base, narrowed into a long, acuminate apex, quite entire. 

 Branches pendulous. Caraccas, 1865. (B. M. 5647, under name 

 of Thibaudia Jetriece.) 



P. longicolla (long-necked), fl., corolla bottle-shaped, the 

 widest and longest portion of the tube scarlet, the column or 



, 



neck much contracted, and green, as are the five sub-triangular 

 and somewhat spreading lobes of the limb ; racemes short, 

 axillary, glomerate, drooping, partially bracteolate ; pedicels 



, , , ; peces 



fleshy. Autumn. L glossy, coriaceous. Sin. to 4in. lonp, shortly 

 petioled, much acuminated, entire. A. 3ft. to 4ft South 

 America, 1865. (B. M. 5526.) 



P. penduliflora (pendulous - flowered). fl. rich scarlet : 

 corolla large, pitcher-shaped, suddenly contracted into a 

 greeuish, flve-lobed apex ; racemes solitary, axillary, many- 

 flowered, secund, and drooping. I. about 4in. long, glossy- 

 green, shortly petioled, elliptical, very entire, much and rather 

 finely acuminated, sub-distichous, the base obtuse. Branches 

 terete, green, tinged with red. Caraccas, 1860. (B. M. 5204.) 



P. pichinchensis glabra (Pichincha, smooth). A synonym of 

 P. Hookeriana. 



P. sarcantna (fleshy-flowered). fl. red, tipped with green; 

 corolla tubular-urceolate, fleshy, disposed in racemes or sub- 

 umbellate ; pedicels one-flowered. Spring. L alternate, coria- 

 ceous, on short petioles. Stem erect branched. New Grenada, 

 1864. (B. M. 5450, under name of Thibaudia sarcantha.) SYN. 

 P. sderophylia. 



P. sclerophylla (hard-leaved). A synonym of P. sarcantha. 

 PSEUD2EGLE SEPIARIA. A synonym of 



Citrus trifoliata (which see). 



PSETJDALANGIUM. 



(which see). 

 PSEUDA 



A synonym of Marlea 



RIUM. Included 



under Poly- 

 podium (which see). 



PSETJDOBARLERIA (of Anderson). A synonym of 

 Petalidium (which see). 



PSEUDO-BULB. A bulb in appearance, but not in 

 structure; a conn; the thickened internode in epiphytal 

 Orchids. 



PSEUDODRACONTIUM (from pseudo. false, and 

 Dracontium ; in allusion to its resemblance to that plant). 

 OBD. AroidecB (Aracece). A genus comprising only a 

 couple of species of stove, tuberous herbs, natives of 

 Cochin China. Male flowers scattered; females densely 

 crowded; spathe erect, boat- shaped, acute, shortly con- 

 volute at base, opening above ; spadix shorter than the 

 spathe, thick, sessile ; peduncle much shorter than the 

 petiole. Leaves trisected, the segments cut or pinnate ; 

 pinnae lanceolate, acuminate, the upper ones confluent and 

 decurrent. the lower ones remote and sessile ; petioles 

 elongated, thick, sheathing at base. One species has been 

 introduced; it requires culture similar to Caladrun 

 (which 88). 

 P. Lacourli (Lacours). This is ttfe correct name of the plant 



described in this work as AmorphophaUut Laeouri. 



PSETJDOTi A RIX (from pseudo, false, and Larix, 

 the Larch, which it resembles). False or Chinese Larch ; 

 Golden Larch. OBD. Com/era. A monotypic genus, the 

 being a noble, hardy tree. It is distinguishable 



