POPULUS 



697 



PORRUM COMMUNE 



p. 



balsami'fera ca'ndicans (whitish). 30-70. March. 

 N. Amer. " Broad-leaved Balsam Poplar." 



elonga'ta (elongated). 



fo'liis variega'tis (variegated-leaved). April. 



intermedia (intermediate). April. 



latifo'lia (broad-leaved). 40. April. 



suave' olens (sweet-scented). See P. SUAVEOLENS. 



vimina'lis (twiggy). See P. LAURIFOLIA. 

 beroline'nsis (Berlin). Origin doubtful. 

 betulifo'lia, (birch-leaved). See P. NIGRA BETUL^E- 



FOLIA. 

 canade'nsis (Canadian). See P. DELTOIDEA. 



au'rea (golden). See P. DELTOIDEA AUREA. 

 ca'ndicans (whitish-heart-leaved). See P. BALSAMIFERA 



CANDICANS. 



cane'scens (hoary). 40. March. England. 

 acerifo'lia (maple-leaved). See P. ALBA NIVEA. 

 cegypti'aca (Egyptian). Egypt. 

 ,, arembe'rgica (Aremberg). See P. ALBA NIVEA. 

 be'lgica (Belgian). See P. ALBA NIVEA. 

 hy'brida (tiybrid). 40. April. Caucasus. 1816. 

 ,, ni'vea (snow-white). See P. ALBA NIVEA. 

 ,, pe'ndula (diooping-branched). Branches pendu- 

 lous. Reintroduced. 1907. 

 carrierea'na (Carrierean) . Leaves grey-green. Habit 



broadly pyramidal. 1909. 

 certine"nsis (Certinan). Garden origin. 

 charkowie'nsis (Charkowian). P. nigraxP. nigra 



pyramidalis. 1902. 

 comesia'na (Comesian). 70. Leaves white-felted 



beneath. Italy. 1908. 



deltoi'dea (deltoid). 50-120. March. N. Amer. 

 " Cottonwood." 



au'rea (golden). Leaves clear yellow, tinted with 

 red when young. 1876. 

 ,, ere'cta (erect). 



Euge'nei (Eugene's). 40-80. Habit broadly 

 pyramidal. 1887. 



dilata'ta (broadened). See P. NIGRA PVRAMIDALIS. 

 Euge'nei (Eugene's). See P. DELTOIDEA EUGENEI. 

 euphra'tica (Euphratian). Orient and Central Asia. 



1881. 



fastigia'ta (pyramidal). See P. NIGRA PYRAMIDALIS. 

 Fremo'nti (Fremont's). California, &c. 

 gra'ca (Greek. Athenian). See P. TREMULOIDES. 

 grandidenta' ta (large- toothed). 70. March. N. 

 Amer. 1772. 



,, pe'ndula (drooping). 40. March. N. Amer. 1820. 

 heterophy'lla (various-leaved). 70. March. N. Amer. 



1765. " Swamp Cottonwood." 

 lasioca'rpa (woolly-fruited). 20-40. Leaves 10 in. 



long, red veined. Central China. 1903. 

 laurifo'lia (laurel-leaved). April. Altai region of 



Southern Siberia. 1772. 

 longifo'lia (long-leaved). See P. LAURIFOLIA. 

 macrophy'lla (large-leaved). See P. BALSAMIFERA 



CANDICANS. 



monili'fera (necklace-bearing). 70-100. April. N. 

 Amer. 1760. 



lindleya'na (Lindleyan). See P. LAURIFOLIA. 

 ,, variega'ia (variegated-/eavfta!). May. 

 moscovie'nsis (Moscovian). Origin doubtful. 

 ni'gra (black). 30. March. Europe (Britain) ; N. 

 Asia. " Black Poplar." 



,, betulcefo'lia (birch-leaved). 30-60. March, April. 

 Europe (England). 

 Nole'stii (Nolest's). 

 pyramida'lis (pyramidal). 70-150. March. Italy. 



1758. " Lombardy Poplar." 



pyramida'lis gigante'a (gigantic). 70-150. March. 

 ,, salicifo'lia (willow-leaved). April. Floetbeck. 



1834. 



sine'nsis (Chinese). China. 1867. 

 vi'ridis (green-leaved). April. Britain. 

 vistule'nsis (Vistulan). Leaves rhomboidal, dark 

 green. Europe. 1909. 

 pekine'nsis (Pekin). Leaves deltoid-ovate silvery. 



X. China. 1903. 



petrowskyz'na (Petrowskyan). Garden origin. 

 plantiere'nsis (Plantieran). Garden origin. 

 pseu'do-balsami'fera (bastard-balsamic). See P. 



BALSAMIFERA. 



rasumowskya'na (Rasumowskyan). Garden origin. 

 Siebo'ldii (Siebold's). Japan. 

 Simo'nii (Simon's). China. 1867. 

 stienia'na (Steinian). Garden hybrid. 1888. 



P. suave' olens (sweet-smelling). 30-70. April. N.W. 

 India to Japan, &c. 1825. 



subintege'rrima (nearly-entire). Leaves green above, 

 white- felted beneath. Spain. 1908. 



thevesti'na (Thevestine). 90. Leaves nearly tri- 

 angular ; petioles carmine. Morocco. 1907. 



,, tomento'sa (felted). See P. ALBA. 



,, tre'mula (trembling. Aspen). 50. March. Europe 

 (Britain) ; N. Africa ; N. Asia. " Aspen." 



,, laviga'ta (smooth). See P. MONILIFERA. 



,, ,, pe'ndula (drooping). March. 1824. 



,, purpu'rea (purple). Leaves purple. 



pyramida'lis (pyramidal). Habit slender, pyra- 

 midal. 1907. 



supi'nz (lying-down). See P. TREMULA PENDULA. 



villo'sa (snaggy). Leaves downy. March. Europe 

 (Britain). 



tremuloi'des (P. tremula-lilie) . 30-50. April. N. 

 Amer. 1812. " American Aspen." 



pe'ndula (pendulous). 25. April. " Parasol de 

 St. Julien." 



ire'pida (trembling). See P. TREMULOIDES. 



,, trichoca'rpa (hairy-fruited). 50-70. April. Western 

 N. Amer. " Black Cottonwood." 



,, tri'stis (sad). April. North-eastern Asia. 1843. 



,, elonga'ta (elongated). 



Via'dri (Viadr's). Origin doubtful. 1890. Allied to 

 P. nigra. 



vistule'nsis (Vistulan). See P. NIGRA VISTULENSIS. 



Wo'bstii (Wobst's). Garden origin. 



PORA'NA. (From poreuo, to travel ; the twining 

 stems extending far and wide. Nat. ord. Bindweeds 

 [Convolvulaceaej. Linn. %-Pcntandria, i-Monogynia. 

 Allied to Convolvulus.) 



Stove evergreen, white-flowered twiners. Seeds in a 

 hotbed, and side, stubby, short shoots in sandy soil, 

 under a bell-glass, in heat ; peat and loam. Winter 

 temp., 50 to 55 ; summer, 60 to 65. 

 P. panicula'ta(pamcled). 10. August to October. India 



and Malaya. 1823. 

 racemo'sa (racemose). 12. White. July, August. 



India; Burma. 1823. 



volu'bilis (twining). 50. July. Burma and Malaya. 

 1820. 



PORANTHE'RA. (From poros, a pore, or opening, 

 and anthera, an anther, or pollen-bag ; anthers opening 

 by pores. Nat. ord. Spurgeicorts [Euphorbiaceas]. Linn. 

 5-Pentandria, ^-Trigynia.) 



Greenhouse evergreen. Cuttings of firm side-shoots in 



sand, under a bell-glass, set in a close frame, and shaded 



in May ; peat and sandy loam. Winter temp., 40 to 48. 



P. cricifo'lia (heath-leaved), i. White. July. Australia. 



1824. 



PORUE'RIA. (Named after P. A . Porlier, a Spaniard. 

 Nat. ord. Beancapers [Zygophyllaceas]. Linn. 8-Octan- 

 dria, i-Monogynia. Allied to Guaicum.) 



Stove evergreen shrub, with leaves which close before 

 rain ; hence called hygrome' trica. Cuttings of firm shoots 

 in spring, in sand, under a bell-glass, and in a brisk 

 bottom-heat. Winter temp., 50 to 55 ; summer, 60 

 to 80. 

 P. hygrome' trica (hygrometric) . 6. Peru and Chili. 1820. 



PO'RPAX OF LINDLEY. (From porpax, a button ; 

 shape of pseudo-bulbs. Nat. ord. Orchids [Orchidacese]. 

 Linn. zo-Gynandria, i-Monandria. Now referred to 

 Eria.) 

 P. reticula'ta (netted). See ERIA RETICULATA. 



PO'RPAX OF SALISBURY. See ASPIDISTRA. 



PORPHYRO'COMA. (From porphura, purple, and 

 home, a head of hair ; flower-heads purple. Nat. ord. 

 Acanihads [Acanthaceae]. Linn. i^-Didynamia, 2-Angio- 

 spermia. Allied to Aphelandra.) 



Stove evergreen shrub. Cuttings of young shoots in 

 sandy soil, in a hotbed ; peat and loam. Winter temp., 

 50 to 60 ; summer, 60 to 85. 



P. lanceola'ta (spear- head-leaved), i. Violet. April. 

 Brazil. 1845. 



PORRUM COMMU'NE. See ALLIUM PORRUM, the 

 Leek. 



