POR 



458 



POR 



longifolia . Apetal 4, H. De. T. 30 America . 1S43 

 monilfiera 7 . Apetal 5, H. De. T. 60 Canada . .1772 

 Lindleyina. Apetal 4, H. De. T. 60 Canada . 1772 

 variegata . Apetal 5, H. De. T. 50 Canada . . 1772 

 nigra . . . Apetal 3, H. De. T. 30 Brit., wet pi. 

 salicifblia . Apetal 4, H. De. T. 30 Ploetbeok . 1S34 

 viridis . . Apetal 4, H. De. T. 30 Brit, gard. 



^an^fera 1 " } A P etal *• H - De - T - 30 America . . 1S43 



suaveolens . Apetal 3, H. De. T. 20 Dahuria . . 1824 



tremula . . Apetal 3, H. De. T. 50 Brit., wet pL 



laevigata 8 . Apetal 3, H. De. T. 60 N. Amer. . 1760 



pSndula . Apetal 4, H. De. T. 40 Brit., wet pL 



suplna 9 . Apetal 3, H. De. T. 50 N. Amer. . 1824 



trepida . . Apetal 4, H. De. T. 40 N. Amer. . 1812 



tristis 10 . . Apetal 4, H. De. T. 30 America . 1843 



Porana, Linn. From poreno, to journey ; 

 branches extending to a great distance. Linn. 

 5, Or. 1, Nat. Or. Conmlvulacece. An orna- 

 mental genus, requiring a mixture of loam and 

 peat, and increased by seeds. Synonyms : 1, 

 DinUus racemosus. See Linitus. 



paniculata . White 

 racem&sa 1 . White 

 volubilis . . White 



. 10, S. Ev. CI. 40 E. Ind. 1823 



. 7, H. CI. A. 20 Nepal . 1823 



7, S. Ev. Tw. 40 E. Ind. 1820 



Poranthera, Rudge. From poros, a pore, and 

 anthera, an anther. Linn. 5, Or. 3, Nat. Or. 

 Euphoroiaecoz. This ornamental species grows 

 freely in a mixture of sandy loam and peat, 

 and young cuttings will root readily if planted 

 in sand, under a glass, 

 ericiffilia . . White . 7, G. Ev. S. i N. Holl. . 1824 



Porcupine. See Chcetaria hfistrix. 



Porcupine. See Hbrdeum liystrix. 



Pores, apertures in the cuticle, through which 

 transpiration takes place, or apertures in the 

 anthc-rs through which the pollen is ejected. 



PorIna, Acharius. From porinos, anything 

 that crumbles away. Linn. 24, Or. 9, Nat. 

 Or. Parmeliaceat. A curious species, found ou 

 the bark of trees, &c. — pertHsa. 



PoRLlERA, Ruiz and Pavon. In honour of An- 

 drew de Porlier, a Spanish patron of botany. - 

 Linn. 8, Or. 1, Nat. Or. Zygophyllacem. A 

 curious and ornamental shrub, with leaves the 

 linear leaflets of which remain open in serene 

 weather, and contract before rain. It grows 

 in a mixture of loam and peat, and ripened 

 cuttings will root in sand, under a glass, in 

 heat, 

 hygrome'trica . Grn. wht. . 4, S. Ev. S. 2 Peru 1820 



Porophyllum, De CandolU. From poros, a 

 pore, and phyllon, a leaf ; porous leaves. Linn. 

 19, Or. 1, Nat. Or. Asteraccce. — Unifolium. 



Porophyllus, having porous leaves. 



PdRPAX, Lindley. From porpax, a button ; in 

 allusion to its pseudo-bulbs. Linn. 20, Or. 1, 

 Nat. Or. Orchidacea. No genus of Orchids 

 has yet been described, writes Dr. Lindley in 

 the autumn of 1845, which will include this 

 curious plant. It approaches nearest to the 

 Eria, but it has tho habit of Trias, and the 

 calyx of the Masdevdllia. 

 reticulata . Pur. red . 3, S. Epi. 1 E. Indies . 1844 



P6RPHTRA, Agardh. From porphyra, purple ; 

 the colour of the species. Linn. 24, Or. 7, 

 Nat. Or. Confervacece. Curious purple species, 

 found during summer on the sea-shore. P. 



laciniata is stewed, and considered a great 

 luxury — laciniata, purpurea. 



Porphyroc6me, Hooker. From porphyra, pur- 

 ple, and koma, head ; in allusion to the purple 

 heads of flowers. Linn. 14, . Or. 2, Nat. Or. 

 Acanthaceai. A very beautiful flowering stove 

 plant, easily increased by cuttings, and suc- 

 ceeding when treated like the species of Ru&llia. 

 lanceolata Violet 4, S. Ev. S. 1 S. America . 1S4.5 



Porrecttjs, stretched out, diffuse. 



Porrum. See Allium Pdrrum. 



Portenschlagia. See Elceodindron. 



Portlandia, P. Browne. Named in honour of 

 the Duchess of Portland, a great patroness of 

 botany. Linn. 5, Or. 1, Nat. Or. Rubiacece. 

 Superb plants, worthy of a place in every col- 

 lection, on account of their large showy flowers. 

 They require a mixture of sandy loam and 

 peat ; and cuttings, with their leaves whole, 

 will root in sand, under a glass, in heat. A 

 strong heat is necessary for them ; without 

 that, they will never grow well. See Coutarea. 

 coccinea . . Scarlet . 6, S. Ev. S. 6 Jamaica . 1812 

 grandiflira . White . 6, S. Ev. S. 10 Jamaica . 1775 

 platantha . . White . 6, S. Ev. S. 3 S. Amer. . 1848 



Portland sago is formed from the dried and 

 powdered roots of the common Wake-robin 

 (Arum maculatum) of our hedge banks. 



Portugal laurel. See Cerasus lusitdnicus. 



PoRTULACA, Linn. From porlo, to carry, and 

 lac, milk ; juicy nature of the plants. Linn. 

 11, Or. 1, Nat. Or. Portulacacew. The seeds 

 of the hardy annual species of this genus may 

 be sown in a sheltered part of the flower- 

 garden in spring. The stove and greenhouse 

 kinds require the same treatment as other 

 stove and greenhouse annuals. Synonymes: 

 1, P. grandifldra rutile. See Talinum. 



PortulacAce^;, or Purslanes. Succulent 

 shrubs and herbs. Some are very pretty, and 

 are ornaments to the flower-garden in summer. 



Portulacaria, Jacquin. Altered from Porlu- 

 laca. Linn. 5, Or. 1, Nat. Or. Porlulacacece. 

 This plant, the African Purslane-tree, will 

 grow well in any dry light soil ; and young 

 cuttings, taken off and dried for a few days, 

 when potted, will root freely. The plant has 

 never flowered in British gardens, 

 afra .... Purple . 4, G. Ev. S. 3 Africa . 1732 



Portulacastrum. See Sesuvium. 



