PLA 



[646] 



PLE 



PLATYCE'RIUM. (From platys, broad, 

 and keras, a horn ; forhi of the fertile 

 fronds. Nat. ord., Ferns [Polypodiacese], 

 Linn., S^-Cryptogamia 1-Filices.] 



Stove Ferns. See FERNS. 



P. alcico'rne (elk's-horn). g. Brown. August. 

 N. S. Wattes. 1808. 



bifo'rme (two-shaped). 4. Brown, April. 



E. Ind. 1842. 



gra'Me (grand). Brown, July. Moreton 



gay. 1828. 



Stemma'ria (stemmaria); 1. Brown. May. 



Guinea. 1822. 



PLATYCHI'LUSI. This should be added 

 to (rompholobium. 



P. Celsia'num (Cel's). 3. Yellow. N. Holland. 

 1820. 



PLATYCO'DON. (From platys, broad, 

 and kodon, a bell ; form of flower. Nat. 

 ord., Bellworts [Campanulacece]. Linn., 

 5-Pentandria 1-Monogynia.) 



Hardy herbaceous perennials. Seeds and divi- 

 sions in spring, and eatings of young shoots in 

 summer, under a hand-light; sandy, mellow 

 loam. 

 P. grandiflo'rum (large-flowered). 1. Blue. June. 



Dahuria. 1782. 

 a'lba (white). 1. White. June. North 



of China. 1845. 



a'lba semiple'na (semi-double-white). 1. 



White. June. China, 1845. 



PLATYLO'BIUM. Flat Pea. (From 

 platys, broad, and lobos, a pod. Nat. ord., 

 Leguminous Plants [Fabacese]. Linn., 

 IG-Monadelphia 6-Decandria. Allied to 

 Hovea.) 



Greenhouse evergreens, from New Holland, 

 and orange-flowered, except where otherwise 

 mentioned. Seeds in spring, in a slight hotbed, 

 after placing them several hours in water, at a 

 temp, of 130; also by cuttings of the half- 

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

 in April ; fibry, sandy peat chiefly, with a very 

 little fibry loam, charcoal, and broken potsherds, 

 with pots extra well drained* Stagnant water, 

 especially in winter, destroys them. Winter 

 temp., 40 to 48. 

 P.formo'sum (beautiful). 4. July. 1790. 



M urraya'num (Murray's). 1. Yellow, red. 



May. 1832. 



obtusa'ngulum (obtuse-angled). 1. Yellow, 



red. May. J832. 



ova'tum (egg-leaved). 4. July. 1792. 



parviflo'rum (small-flowered). 4. July. 1/92. 



triangula're (triangular-feawed). 4. July. 1805^ 

 PLATYLO'MA. (From platys^ broad, and 



loma, an edge. Nat. ord., Ferns [Polypo- 

 diaceaj]. Linn.,2-Cryptogamia 1-Filices.) 



Stove, brown-spored Fern. See FBBKS. 

 P. Andromedeefo'lia (Andromeda-teamf). May. 

 1840. 



a'tro-purpu'red (dark purple), i. May. N. 



Amer. 1770. 



Sro'wnii (Brown's). May. Australia. 



calome'lanos (beautiful-dark). Mav. Cane of 



Good Hope. 1843. 



corda'ta (heart-shaped;. 3. June. Mexico. 1842, 



P. falca'ta (sickle- shaped). 1. May. N.Holland. 

 1823. 



flexuo'sa (zigzag). May. Peru. 1838. 



grandifo'Ha (large-leaved). 2. September. 



W. Ind. 1793. 



rotundifo'lia (round-leaved), l. July. New 



Zealand. 1824. 



sagitta'ta (arrow-shaped). 3. June. S. Amer. 



1826. 



ternifo'lia (three-leafleted). 1$. Mexico. 1840. 



PLATYLO'PHUS. (From platys, broad, 

 and lophos, a crest ; seed-pod compressed 

 so as to seem winged. Nat. ord., Cunoniads 

 [Cunoniaceae]. Linn., 10-Decandria 2- 

 Digynia. Allied to Weinmannia.) 



Greenhouse evergreen tree. Cuttings of ripe 

 shoots in sand, under a glass, in April or May ; 

 loam and peat. Winter temp,, 40 to 45 

 P. trifulin'ta (three-leafleted. White Ash}. White. 

 June. Cape of Good Hope. 1820. 



PLATYPE'TALUM. (From platys, broad, 

 and petalum, a petal. Nat. ord., Crucifcrs 

 [Brassicacesej. Linn., 15-Tetradynamia.) 



Hardy herbaceous perennial. Seeds, and divi- 

 sions in spring; sandy peat, in a very sheltered 

 border, but better still treated as an alpine her- 

 baceous plant, by giving it rather a shady place 

 in summer, and protecting it from wet and cold 

 in winter. 



P. puroura'scens (purplish), i. Purplish. May. 

 ' Melville Island. 1827. 



PLATYSTE'MON. (From platys, broad, 

 and stemon, a stamen. Nat. ord., Poppy- 

 worts [Papaveracese]. Linn., 13-Polyan- 

 dria \-Monogynia.} 



Hardy, yellow-flowered annuals. Seeds in 

 April ; common, rich, light soil. 

 P. Calif o'rnicus (Californian). 1 . August. Cali- 

 fornia; 1833. 



leioca'rpus (smooth-fruited). 1. July. Si- 



beria. 1837. 

 PLATYSTI'GMA. (From platys, broad, 



and stigma, the female organ. Nat. ord., 



Poppyworts [Papaveracese], Linn., 13- 



Polyandria I-Monogynia. Allied to Pla- 



tystemon. ) 

 Half-hardy herbaceous perennial. Stfeds and 



divisions in spring ; common, light soil; requires 



a little protection in winter. 



P.linea're (narrow-teaed), . Yellow, Cali- 

 fornia. 1833. 



PLEASURE-GROUND i3 a collective name 

 for that combination of parterres, lawns, 

 shrubberies, waters, afbburs, &c., which 

 are noticed individually in these pages. 

 One observation may be applied to all 

 let congruity preside over the whole. It 

 is a great fault to have any one of those 

 portions of the pleasure-ground in ex- 

 cess ; and let the whole be proportioned 

 to the residence. It is quite as objec- 

 tionable to be over-gardened as to be 

 over-housed. 



PLECTRA'NTHUS. (From plcktron, a 



