PET 



430 



PEU 



plants, growing in any border soil ; young 

 plants are readily obtained by divisions. Sy- 

 nonyme : 1, Dalea Kuhnistera. 

 candidum . . White . 7, F. Her. P. 1 N. Ame. 1811 

 carneum . . Flesh . 7, F. Her. P. J N. Ame. 1811 

 corymbosum 1 White . S, H. Her. P. if N. Ame. 1811 

 vnlbsum . Red . . 7, H. Her. P. 1 Missouri 1826 

 violaceum . . Violet . 8 H. Her. P. 1 N. Ame. 1811 



Petals, divisions of a corolla. 



Petamenes. See Gladiolus. 



Petasites. See Tussilago. 



Petit coco. See Theophrdsta Jussi&i. 



Petiolate, or petioled, having footstalks. 



Petiolulate, having little petioles. 



Petiveria. Named by Linnzeus in honour of 

 J. Petiver, F.R.S., a London apothecary. 

 Linn. 7, Or. 1, Nat. Or. Petiveriacece. Orna- 

 mental plants, growing in a mixture of loam 

 and peat ; they propagate readily by cuttings 

 under a glass. 



aUiacea White . . 6, S. Ev. S. 2 Jamaica . 1759 



octandra . . White . . 6, S. Bv. S. 2 W. Indies . 1737 



PetivbeiAoe^;, or Petiveriads. A small 

 order of tropical undershrubs and herbaceous 

 plants. 



PEToiJMA. See Apieba Petouma. 



Petrea. Linnaeus dedicated this genus to 

 Robert James, Lord Petre, a famous patron 

 of botany, who died in 1742. Linn. 14, Or. 

 2, Nat. Or. Verbenicece. Beautiful stove 

 plants. P. volubilip is one of the most hand- 

 some stove twiners we possess. To grow them 

 well, they must be planted in good rich mould, 

 and kept in a strong heat. They may be 

 propagated readily by cuttings under a glass, 

 erecta . . Blue . . 6, B. Bv. S. 12 S. Amor. 1823 

 rug&sa . . Blue . . 7, S. Ev. S. 12 Caracoas . 1824 

 Stapeliss . Lilac . . 6, S. Ev. Tw. 20 S. Amer. 

 volubilis . Purple . 7, S. Ev. Tw. 20 Vera Cruz 1733 



Petrobitjm:, R. Brown. From peiros, a rock, 

 and bio, to live ; habitation of the species. 

 Linn. 19, Or. 1, Nat. Or. Asteracece. An 

 ornamental shrub, growing well in sandy loam ; 

 and cuttings root without difficulty in the same 

 kind of soil. Synonymies: 1, JSidens arbbrea, 

 Spildnthes arbbrea. 

 arbfireum 1 . .Pa. yel. 6, S. Ev. S. 6 St. Helena 1816 



Petrocallis, R. Brown. From petros, a rock, 

 and Icalos, beautiful ; the plant adorns the 

 rocks on which it grows. Linn. 15, Nat. Or. 

 Brassicucece. This little plant is well fitted for 

 ornamenting rock-work, or it may be grown in 

 pots, in a mixture of sandy loam and peat, and 

 is multiplied by seeds, or divisions at the root. 

 Synonyine: 1, Draba pyrenaica. 

 pyrenalca 1 . Pink . 5, G. Her. P. 4. Pyrenees . 1759 



PetrocArya. See Parinariwm. 



Petromarula, A. Decandolle. From petros, a. 

 rock, and maron, a bitter herb. Linn. 5, Or. 

 1, Nat. Or. Campanulaceoi. This plant re- 

 quires to be grown in a sheltered situation, and 

 protected by a frame in winter ; it may be 

 increased by divisions. Synonyme: 1, Phy- 

 teuma pinnata. 

 pinnata 1 . Pa. bine . 8, F. Her. P. 3 Candia . 1640 



Petr6phila, R. Brown. From petros, a stone, 

 and phileo, to love ; in allusion to the places 



in which the plants are found. Linn. 4, Or. 

 1, Nat. Or. ProUaceae. A genus of ornamental 

 shrubs, nearly related to Prolea, to which 

 genus they may be referred for culture and 

 propagation. Synonyme: 1, Prdtea fudfblia. 

 aeicularis . Wht. red . 5, G. Ev. S. S N. Hoi. . 1830 

 bildba . . . White . . 5, G. Ev. S. 1 Swan R. 1850 

 brevifdlia . White . . 5, G. Bv. S. 4 Swan R. 1837 

 canescens . White . . 6, G. Ee. S. 1 N. Hoi. . 1830 

 diversif61ia . White . . 5, G. Bv. S. 5 N. Hoi. . 1803 

 fastigiata . White . . 7, G. Ev. S. 4 N. Hoi. . 1820 

 fllifdlia . . White . . 6, G. Ev. S. 5 N. Hoi. . 1824 

 glandulfgera. White . . 5, G. Bv. S. 4 Swan R. 1840 

 heterophylla. White . . 6, G. Bv. S. 4 Swan R. 1840 

 juncifolia . White . . 6, G. Bv. S. 4 Swan R. 1840 

 pedunculata. White . . 7, G. Ev. S. i N. Hoi. . 1824 

 pulehella 1 . White . 7, G. Ev. S. 5 N. S. W. 1790 

 rigida . . . White . . 6, G. Ev. S. 6 N. Hoi. . 1823 

 teretifdlia . White . 7, G. Ev. S. 4 N. Hoi. . 1824 

 trifida . . . White . . 7, G. Bv. S. 4 N. Hoi. . 1820 



PetroselInum, Hoffmann. 'From petros, a rock, 

 and selinon,. parsley ; habitation of the species. 

 Linn. 5, Or. 2, Nat. Or. Apiacece. P. sativum, 

 the common Parsley, is a well-known culinary 

 herb. The seeds of all the species may be sown 

 in spring, in the open ground. Synonymes: 

 1, Lig&stiawm peregrinum ; 2, Apium Petro- 

 sellnwm; 3, Sison segetum. 



fractophyllum Yellow . 6, H. B. 2 . 1825 



prostratum . Green . 6, G. B. 2 V. D. L. 1818 



romanum . . Green . 6, H. B. 2 Greece . 



peregrlnum 1. White . 6, H. B. 2 Portugal 1633 



sativum 2 . . Lt yel. . 6, H. B. 2 Sardinia 1548 



segetum 3 . . White . 7, H. A. 2 Brit., fields. 



Petty-rice. See Chenopodium Quinba. 



Petty-whin". See Genista dnglica. 



Pett/nga, De Oandolle. Peetunga is the name 

 of P. Koxburghiana in Bengal. Linn. 5y Or. 

 1, Nat. Or. OincAonaceee. This is an orna- 

 mental plant, growing freely in turfy peat and 

 sandy loam. 

 Roxburghiana White . 5, S. Ev. S. 3 B. Indies . 1818 



PETtrjflA, Jussieu. The Brazilian name for 

 tobacco is Petun; applied to this genus be- 

 cause of its affinity with Nieotiana. Linn. 5, 

 Or. 1, Nat. Or. Solanacece. A highly orna- 

 mental genus of free-flowering plants, well 

 adapted for turning out in beds or borders 

 during summer. They will grow in any lighf 

 soil, but prefer a mixture of sandy loam and 

 vegetable mould ; cuttings will strike at any 

 season in heat, care being taken to keep them 

 from damp. Synonymes : 1, Salpiglbssis line- 

 aris, Nierenibirgia intermedia; 2, Nieotiana 

 nyctaginiflbra ; 3, P. phamicea, Nierembirgia 

 phcenicea, Salpigldssis integrifdlia. 

 acuminata . . White . 7, F. Her. P. 1} Chile . 1827 

 Atkinsiana . . Cri.pur. 7, H. A. 2 Hybrid. 1834 



intermedial . Yl. pur. 8, F. Her. P. 1 B.Ayresl8S2 

 Eyctaginiflora 2 White . 8, F. Her. P. 2 8. Ame. 1823 

 punctata . . Bl. wht. 8, F. Her. P. 2 Hybrid. 1843 

 violacea 8 . . Ro. pur. 8, F. Her. P. 2 B. Ayres 1831 



Petjcedaitom, Koeh. From peuke, a pine, and 

 danos, parched ; so named because of its strong 

 resinous smell. Linn. 5, Or. 2, Nat. Or. 

 Apiacece. The species are of no interest, and 

 will grow in any common garden soil. Syno- 

 nymes: 1, Onidium alsdlicum; 2, Silinum 

 venetum ; 3, S. auslriacwm ; 4, S. baicaUnse ; 

 S,.S. peucedanordes ; 6, S. polymbrphum ; 7, 

 S. Oreosilinum ; 8, S. gdllicum ; 9, & ihgans, 



