PTEROCELASTRUS 



719 



PTYCHOSPERMA 



P. rhoifo'lia (Rhus-leaved). Green. May. Japan. 

 spachia'na (Spachian). See P. CAUCASICA. 

 ,, sttno'ptera (narrow- winged). Green. May. China. 

 1882. 



PTEROCELA'STEUS. (From pteron, a wing, and 

 Celastrus ; referring to the 3-6 wings of the fruit. Nat. 

 ord. Celastracea?. Allied to Celastrus.) 



Greenhouse shrubs or small trees with small flowers. 

 Cuttings of half-ripe shoots in sand, under a bell-glass 

 in summer. Fibrous loam, peat, and sand. 

 P. rostra'tus (beaked). 3. White. May. S. Africa. 



1821. 



tricuspida'tus (shortly- three-pointed). 3. White. 

 July. S. Africa. 1824. 



PTEROCE'LTIS. (From pteron, a wing, and Celtis ; 

 alluding to the wing surrounding the fruit. Nat. ord. 

 Urticaceae. Allied to Celtis.) 



A hardy shrub or small tree. Seeds; layers. Ordinary 

 soil. 



P. Tatarino'wii (Tatarinow's). 10. Green. Mongolia. 

 1904. 



PTEROCETHALUS. See SCABIOSA. 

 PTEROCHTLUS. See MICROSTYLIS. 

 PTEROCO'CCTJS. See CALLIGONUM. 



PTEROprSCUS. (From pteron, a wing, and discus, 

 a disk. Nat. ord. Pedaliads [Pedaliaceae]. Linn. 14- 

 Didynamia, 2-Angiospermia. Allied to Martynia.) 



Stove herbaceous perennials. Seeds in spring and 

 autumn ; division of the plant, and cuttings of young 

 shoots under a bell-glass, in the beginning of spring and 

 in the middle of autumn ; sandy loam and leaf-mould. 

 Winter temp., 40 to 48 ; summer, 60 to 75. 

 P. lu'ridus (lurid). i$. Dusky yellow. July. S. Africa. 



1868. 



specio'sus (showy). 2. Lilac, purple. May. S. 

 Africa. 1844. 



PTERO'LEPIS. (From pteron, a wing, and lepis, 

 a scale ; in allusion to the feathery bristles between the 

 calyx lobes. Nat. ord. Melastomaceae. Allied to 

 Pleroma.) 



A small, evergreen, stove, shrubby plant. Cuttings 

 in sand, in a close case, with bottom-heat. Fibrous 

 loam, lumpy peat, and sand. 

 P. glomera'ta (clustered). ij. Pink. July. Trop. 



Amer. ; W. Ind. 1818. 



albiflo'ra (white-flowered), ij. White. January. 

 Brazil. 1821. 



PTEROLO'BIUM. (From pteron, a wing, and lobos, 

 a pod ; the pods are winged. Nat. ord. Leguminosae. 

 Allied to Haematoxylon and Gymnocladus.) 



Stove tree or large shrub, armed with hooked prickles. 

 Cuttings of half-ripened wood in sand, placed in a pro- 

 pagating case, with bottom-heat. Fibrous loam, peat, 

 and sand. 

 P. i'ndicum (Indian). White. India. 



PTEROLO'MA. See DESMODIUM. 



PTERONEU'RON. (From pteron, a wing, and neuron, 

 a nerve ; winged seed-cord. Nat. ord. Crucifers. Linn. 

 is-Tetr adynamia. Now referred to Cardamine.) 

 P. carno'sum (fieshy-leaved). See CARDAMINE CARNOSA. 

 ,, grcs'cum (Grecian). See CARDAMINE GRCA. 



PTERO'NIA. (From pteron, a wing ; in allusion to 

 the feathery scales inside the flower-head. Nat. ord. 

 Composite. Allied to Solidago.) 



Evergreen, greenhouse shrubs from South Africa. 

 Cuttings in sand, under a bell-glass, in gentle heat. 

 Fibrous loam, leaf-mould, and sand. 

 P. camphora'ta (camphor-scented). 2-3. Yellow. June. 



1774- 

 Chamapeu'ce (Chamaapeuce). See CNICUS CHAM^E- 



PEUCE. 



echina'ta (prickly). See FELICIA ECHINATA. 

 fascicula' ta (bundled). 2. Yellow. June, July. 1818. 

 fiexicau'lis (flexuous-stemmed). 2-3. Yellow. June, 



July. 1812. 



glomera' ta (clustered). 2. Yellow. June, July. 1817. 

 inca'na (hoary). 2. Golden-yellow. J une to August. 

 1907. 



P. oppositifo'lia (opposite-leaved). 2. Yellow. June, 



July. 1774. 



pa'llens (pale). 2. Yellow. June, July. 1816. 

 pauciflo'ra (few-flowered). See HELIPTERUM VIE- 



GATUM. 



scario'sa (scarious). 2. Yellow. June, July. 1815. 

 stri'cta (erect). See P. CAMPHORATA. 



PTEROPHY'TON. See ACTINOMERIS. 

 PTERO PSIS. See T^NITIS. 



PTEROSPE'RMTJM. (From pteron, a wing, and sperma, 

 a seed ; winged seeds. Nat. ord. Sterculiads [Ster- 

 cuh'aceae]. Linn. i6-Monadelphia, j-Dodecandria. Allied 

 to Astrapaea.) 



Stove, white-flowered, evergreen trees, from the East 

 Indies. Cuttings of half-ripened, stubby side-shoots, 

 cut close to the stem, in sand, and in 'bottom- heat ; 

 sandy, fibrous loam and lumpy peat, with good drainage. 

 Winter temp., 50 to 55 ; summer, 60 to 85. 

 P. acerifo'lium (maple- leaved). 10. August. 1790. 



platanifo'lium (plane-leaved). 15. 1820. 



,, semisagitta' turn (hali-arrow-leaved). 10. 1820. 



suberifo'lium (cork-tree-leaved). 10. 1783. 



PTEROSTE LMA. See HOYA. 



PTEROSTTGMA GRANDIFLO'RUM. See ADENOSMA 



GRANDIFLORUM. 



PTEROSTYXIS. (From pteron, a wing, and stulis, a 

 style ; in allusion to the winged column. Nat. ord. 

 Orchidaceae. Related to Corysanthes.) 



Greenhouse terrestrial Orchids, with a small tuberous 

 rootstock. Imported tubers and offsets. A little 

 fibrous loam, much flaky leaf-mould, and sand. Winter 

 temp., 45 to 50 ; summer, 60 to 70. 

 P. acumina'ta (long-pointed). J. Green. April. 



Australia. 1827. 

 Ba'nksii (Banks's). i-ij. Green. April. New 



Zealand. 1832. 



Bapti'stii (Baptist's). 1-2. Green, with brown- 

 purple tips to sepals and petals. N.S.Wales. 1877. 

 conci'nna (neat). |. Green, tipped brown-purple. 



Australia. 1828. 



cu'rta (short). \. Green. Australia. 1829. 

 nu'tans (nodding). J-i. Green. Australia. 1826. 



PTEROSTY'RAX HTSPIDUM. See HALESIA HISPIDA. 

 PTILOCNEMA BRACTEA TA. See PHOLIDOTA w 



BRICATA. 



PTILO'MERIS CORONA'RIA. See ACTINOLEPIS CORO- 



NARIA. 



PTILO'TRICHUM. (From ptilon, a feather, and thrix, 

 a hair. Nat. ord. Crucifers [Cruciferae], Linn. 15- 

 Tetr adynamia. Now referred to Alyssum.) 

 P. cane'scens (hoary). See ALYSSUM CANESCENS. 

 elonga'tum (lengthened). See ALYSSUM CANESCENS. 



PTYCHOCO'CCTJS. (From ptux, ptuchos, a fold, and 

 coccos, a berry ; there is a groove or fold in the fruit. 

 Nat. ord. Palmaceae.) 



Stove palms. Seeds. Loam, peat, and sand. 

 P. are'cinus (Areca-like). 50-60. New Guinea. 1884. 

 parado'xus (paradoxical). 40-50. New Guinea. 



PTYCHORA'PfflS. (From ptux, ptuchos, a fold, and 

 rhaphis, a needle ; in allusion to the beaked fruit. Nat. 

 ord. Palmaceae.) 



Stove palms, with pinnate leaves resembling those of 

 Cocos weddelliana when young. Seeds. Fibrous loam, 

 peat, and sand. 

 P. augu'sta (august). 60-100. Stem slender. Nicobar 



Islands. 1892. 

 siebertia'na (Siebertian). Stem slender. Leaves 



coppery when young. Malaya. 1908. 

 Singapore' nsis (Singapore). 50. Stem slender. 

 Malaya. 1884. 



PTYCHOSPE'RMA. (From ptux, ptuchos, a fold, and 

 sperma, a seed : in allusion to the five grooves or furrows 

 in the seeds of some of the species. Nat. ord. Palmaceae.) 



Stove Palms. Seeds. Fibrous loam, peat, and sand, 

 fed with artificial manures, or loam, mixed with a little 

 cow-manure, if planted out. Winter temp., 55 to 60 ; 

 summer, 65 to 80. 



