PET 



[ 628 ] 



PHA 



P. villo'sum (shaggy). Red. July. 1826. 



viola 1 ceum (violet). 1. Violet. August. 1811. 

 PETIVE'KIA. (Named after J. Pet'iver, 



an English naturalist. Nat. ord., Pctive- 

 riads [Petiveriacese]. ~Lmn.,7-Hepta>idria 

 i -Monoqyma . ) 



Stove evergreen, West Indian, white-flowered 

 shrubs. Cuttings of half-ripened shoots in May, 

 in sand, under a bell-glass, and in a sweet bot- 

 tom-heat ; peat and sandy loam. Winter temp., 

 43 to 60; summer, 60 to 85. 

 P. allia'cea (garlic-scented). 2. June. 1/5Q. 



octa'ndra (eight-stamened). 2. June. 1737. 

 PETRJE'A. (Named after Lord Petrc. 



Nat. ord., Verbenas [Verbenacese]. Linn., 

 I4:-Didynamia 2-Angiospermia. Allied to 

 Duranta.) 



Stove evergreen trees. Cuttings of short, firm 

 side-shoots in summer, in sand, under a bell- 

 glass, and in bottom-heat; rich, sandy loam. 

 Winter temp., 60; summer, 60 to 90. 

 P. cre'cta (erect). 10. Blue. S. Amer. 1823. 



rugo'sa (wrinkly). 10. Blue. Caraccas. 1824. 



Stupe'lia (Stupeliz-flowered) . 20. Lilac. June. 



S. Amer. Twiner. 



volu'bilis (twisting). 20. Purple. July. Vera 



Cruz. 1733. Twiner. 



PETROCA'LLIS. (From petros, a rock, 

 and kaloK, beautiful; pretty rock- plant. 

 Nat. ord., Crucifers [Brassicacese]. Linn., 

 15-Tetradynamia. Allied to Draba.) 



Hardy herbaceous perennial. Division in spring, 

 cuttings of shoots under a hand-light, in summer; 

 sandy loam ; protect with an evergreen branch in 

 severe weather. 



P. Pyrena'ica (Pyrenean). . Pink. May. Pyre- 

 nees. 1759. 



PETRO'PHILA. (From petros, a rock, or 

 stone, and phileo, to love ; referring to 

 their natural habitation. Nat. ord., Pro- 

 tcads [Proteaceae]. Linn., k-Tetrandria 

 I-Monogynia. Allied to Protea.) 



Greenhouse, evergreen, white - flowered, New 

 Holland shrubs. Cuttings of ripe shoots in spring, 

 under a bell-glass, and placed in a cold frame ; 

 fibry, rather tenacious loam, and a little peat. 

 Winter temp., 38 to 48. 

 P. brevifo'lia (short-leaved). 



fastigia'ta (pyramidal). 5. July. 1820. 

 filifo'lia (thread-leaved). 5. June. 1824. 



glanduli'gera (gland-bearing). 



heterophy'lla (various-leaved). 



juncifo'lia (rush-leaved). 



peduncula a(/ow#-flower-stalked) 4. July. 1 824 . 



pulche!lla(T\z*.i). 5. July. I/go. 



ri'gida (stiff). 5. June. 1823. 



teretifo'lia (round-leaved). 4. July. 1824. 



tri'fida (three-cleft). 4. July. 1820. 



PETTY- WHIN. Geni'sta A'nglica. 



PETU'NGA. (Its Indian name. Nat. 

 ord., Ginchonads [Cinchonacese]. Linn., 

 5-Pentandna 1-Monoyynia.) 



Stove evergreen shrub. Cuttings of half- 

 ripened shoots in sand, under a bell-glass, and in 

 a slight bottom-heat ; sandy loam and fibry peat. 

 Winter temp., 50 to 60; summer, 60 to 80. 



P. Roxlurghta'na (Dr. Roxburgh's). 3. White. 

 May. E. Ind. 1818. 



PETU'NIA. (Frompeftw, Brazilian name 



for tobacco, to which Petunia is allied. 

 Nat. ord., Nig hi shades [Solanacese]. Linn., 

 o-Pentandria 1 Monoyynia.} 



Half-hardy herbaceous perennials. Seeds sown 

 in a hotbed, in March ; seedlings pricked out, and 

 finally transplanted into the borders in May ; cut- 

 tings of the points of shoots, or small side-shoots, 

 in spring, in heat, and in summer and autumn 

 without heat, except being covered with glass ; 

 scarcely any of them will stand frost. It is best 

 to keep the plants in a cold, dry pit during the 

 winter; for growing, light, rich, sandy loam. 

 Temp., not below 38 in winter. 

 P. acumina'ta (pointed-teamf). 2. White. Julj. 

 Chili. 1827. 



interme'dia (intermediate). 1. Yellow, purple. 



August. Buenos Ayres. 1832. 



nyctaginiflo'ra (marvel-of-Peru-flowered). 4. 



White. August. S. Amer. 1823. 



pliceni'cea (purple-flowered'). 2. Crimson, 



purple. June. Buenos Ayres. 1831. 



viola' cea (.violet-coloured). Rose, purple. Au- 



gust. Buenos Ayres. 1831. 



PEU'MUS. Same as Salpia'nthvs fra'- 

 grans. 



PEYKOU'SIA, properly Ovieda. (Named 

 after La Peyroiise, the French navigator. 

 Nat. ord., Irids [Iridacese]. Linn., 3- 

 Trlandria 1-Monogynia.} 



Greenhouse bulbs, from Cape of Good Hope, 

 and blue-flowered, except where otherwise speci- 

 fied. For culture, see IXIA. 

 P. aculeu'ta (prickly). $. Blue, yellow. June. 1825. 



a'nceps (two-edged). . September. 1824. 



corymho'sa (corvmbed). . May. 1791. 



Fubri'cii (Fabricius's). . May. 1825. 



fulcu'ta (sickle-leaved), i. May. 1825. 



faxcicula'ta (fascicled), f May. 1825. 



fissifo'lia (cleft-leaved). ^. Violet. August. 1809. 



silenoi'des (catchfly-like). 4. Violet. June. 1822. 

 PIIA'CA. (Name of a plant mentioned 



by Dioscorides. Nat. ord., Leguminous 

 Plants [Fabacese]. Linn., Yi -Diadelphia 

 i-Decandna. Allied to Astragalus.) 



Hardy herbaceous perennials. Seeds sown in a 

 little heat, in April, and seedlings planted out, 

 will bloom the same season ; many will do so if 

 sown in good places in the open air ; division of 

 the roots in spring; cuttings under a hand-light, 

 in summer; sandy loam. Cane'scens requires 

 protection from frost in winter. 

 P. alpi'na (alpine). 2. Pale yellow. July. Austria. 



1759. 

 Duiiu'rica (Dahurian). Pale yellow. Da- 



huria. 1820. 



arenu'rin (sand). . Cream. July. Siberia. 1796. 



astragu'lina (astragalus-like). 1. White, blue. 



July. Scotland. 



austra'lis (southern). . Pale purple. May. 



South Europe. 1/79. 



Bce'tica (Bsetic). 4. White. May. Spain. 1 640. 



Cane'scens (hoary). 1, Pale rose. July. Val- 



paraiso. 1831. 



densifo'lia (crowded-leaved). 1. Red. July. 



California. 1822. 



exalta'ta (tall). 1. Yellow. July. Altai. 1828. 

 fri'gidu (cold). 1. Cream. July. Austria. 1705. 



