PLASTER OF PARIS 



679 



PLATYLEPIS 



same time, preserve all the branches alive. For this 

 purpose, the branches to be plashed, or bent down, must 

 not be cut more than half through, in order that a 

 sufficient portion of sap may rise up from the root to 

 keep alive the upper part of the branches. Where 

 hedges are properly formed and kept, they can very 

 seldom require to be thus maimed. 

 PLASTER OF PARIS. See GYPSUM. 

 PLATANTHE'RA. (From platus, broad, and anthera, 

 an anther. Nat. ord. Orchids [Orchidacea?]. Linn. 20- 

 Gynandria, i-Monandria. Now referred to Habenaria.) 

 P. cilia.' ris (hair-fringed). See HABENARIA CILIARIS. 



crista'ta (crested). See HABENARIA CRISTATA. 



dilata'ta (spread). See HABENARIA DILATATA. 



fimbria'ia (fringed). See HABENARIA LACERA. 



herbi'ola (small- herb). See HABENARIA HERBIOLA. 



hol&pe'tala (all-petaled). See HABENARIA BLEPHARI- 

 GLOTTIS. 



Hoo'keri (Hooker's). See HABENARIA HOOKERIANA. 



hyperbo'rea (northern). See HABENARIA HYPER- 

 BOREA. 



inci'sa (cut). Pale yellow. See HABENARIA INCISA. 



psycho'des (butterfly-like). See HABENARIA LACERA. 



Susa'nnce (Susanna). See HABENARIA SUSANNA. 



PLA'TANUS. Plane-tree. (From platus, broad ; the 

 wide-spreading head of the trees. Nat. ord. Planes 

 [Platanacese]. Linn. 2i-Mono5cta, g-Polyandria.) 



Hardy deciduous trees, flowering in April. Seeds in 

 the autumn, and preserved until spring ; cuttings, also, 

 in spring and autumn, but chiefly and most quickly by 

 layers in autumn and spring ; deep, mellow loam. 

 P. accrifo'lia (Acer-leaved). 70-80. Orient. " London 



Plane." 



fo'liis arge'nteis (silvery-leaved). Leaves varie- 

 gated with silvery-white. 1887. 

 cunea'ta (wedge-shaped). 15-25. Orient. 1739. 

 occidenta'lis (western). 70. N. Amer. 1636. 



" Button Wood." 

 au'rea variega'ta (golden-variegated-/at'2). 70. 



1846. 



heterophy'lla (various-leaved). Amer. 1842. 

 ,, intrgrifo'lia (entire-leaved). 70. 1845. 

 orienta'lis (eastern). 50. Levant. 1548. " Oriental 



Plane." 



acerifo'lia (maple-leaved). See P. ACERIFOLIA. 

 cunea'ta (wedge-leaved). See P. CUNEATA. 

 hispa'nica (Spanish). 70. Spain. 

 ,, lacinia'ta (cut-leaved). 70. 1845. 

 monstro'sa (monstrous). 70. 1845. 



PLATYCA'RPHA. (From platus, broad, and karphos, 

 dried straw ; in allusion to the dry-looking scales sur- 

 rounding the flower-head. Nat. ord. Compositae.) 



Half-hardy or greenhouse perennial herbs. Seeds ; 

 divisions in spring. Fibrous loam, leaf-mould, and sand. 

 P. glomera'ta (clustered). J. Blue or violet. August. 

 S. Africa. 1824. 



PLATYCA'RPUM. (From platus, broad, and karpos, a 

 fruit ; the two halves of the fruit being broad and 

 flattened. Nat. ord. Rubiaceas.) 



Stove tree. Cuttings of half mature wood in sand, in 

 a close case, with bottom-heat. Loam, peat, or leaf- 

 mould, and sand. 



P. orinoce'nse (Orinoco). 20. Light rose. March. 

 Venezuela. 1813. 



PLATYCA'RYA. (From platus, broad, and karuon, a 

 nut ; in allusion to the bracts covering the fruits. Nat. 

 ord. Juglandaceae.) 



A small tree, hardy in the more favoured parts of the 

 south and west of England, and in Ireland. Nuts. 

 Ordinary soil. 



P. strobila'cea (cone-like). Yellow-green. August. Japan 

 and N. China. 1844. 



PLATYCE'RIUM. (From platus, broad, and keras, a 

 horn ; form of the fertile fronds. Nat. ord. Ferns 

 [Filices]. Linn. z^-Cryptogamia, i-Filices.] 



Stove Ferns. See FERNS. 

 P. cethio' picum (Ethiopian). 1-2. Brown. Trop. Africa. 



1822. 

 alcico'rne (elk's- horn). J. Brown. August. N.S. 



Wales. 1808. 

 Cordre'yi (Cordrey's). 



P. alcico'rne dive' r gens (diverging). 



Hi'llii (Hill's). i. Queensland. 1878. 



,, ma'jus (larger). Polynesia. 1870. 



,, ,, Ma'yii (May's). Arching fronds more drooping, 

 more deeply cut. 1904. 



angole'nse (Angolan). Fertile frond broad cuneate, 

 undivided. Angola. 1898. 



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

 pines ; Malaya. 1842. 



Ghelli'nckii (Ghellinck's). 1882. 



gra'nde (grand). Brown. July. Moreton Bay. 1828. 



,, Hi'llii (Hill's). See P. ALCICORNE HILLII. 



Stemma'ria (Stemmaria). See P. .STHIOPICUM. 



,, Va'ssei (Vasse's). Barren fronds not laciniate ; 

 fertile fronds regularly forked. Mozambique. 1910. 



Vei'tchii (Veitch's). Fronds erect, leathery, dark 

 green. 1896. 



Walli'chii (Wallich's). Barren frond deeply lobed ; 

 fertile in pairs, pendent. Malaya. 1860. 



WilU'nckii (Willinck's). Java. 1875. 



PLATYCHTLUM CELSIA'NUM. See HOVEA CELSI. 



PLATYCLTNIS. (From platus, broad, and Minis, 

 diminutive of kline, a bed ; in reference to the broad 

 ; axis of the spike on which the flowers are seated. Nat. 

 ' ord. Orchidaceae.) 



Stove epiphytical Orchids, of considerable interest, 

 but not very showy. Divisions at the commencement 

 of growth. The fibre of peat, sphagnum, bits of charcoal 

 and plenty of crocks. 

 P. abbreoia'ta (shortened). Green, white, yellow. Java. 



1844. 



,, arachni'tes (spider). Philippines. 

 ba'rbifrons (bearded- front). Whitish-green, fringed 



with warts in front. Sumatra. 1902. 

 ,, cobbia'na (Cobbian). i. Pale yellow, orange. Philip- 

 pines. 1880. 



cucumeri'na (cucumber-like). Pale green. Philip- 

 pines. 1885. 

 ,, fili fo'r mis (thread-formed), i. Pale greenish-yellow. 



Philippines. 1836. 

 gluma'cea (large-glumed). i. White, fragrant. 



Philippines. 

 va'lida (strong). A much stronger plant. 



latifo'lia (broad- leaved). Philippines. 

 longifo'lia (long-leaved). Trop. Asia. 

 ru'fa (reddish), i. Reddish-brown. 1898. 

 unca'ta (hooked). Philippines. 



PLATYCO'DON. (From platus, broad, and kodon, a 

 bell ; form of flower. Nat. ord. Bellicorts [Campanu- 

 laceae]. Linn. 5-Pentandria, i-Monogynia.) 



Hardy herbaceous perennials. Seeds and divisions in 

 spring, and cuttings of young shoots in summer, under 

 j a hand-light ; sandy, mellow loam. 

 P. autumna'le (autumnal). See P. GRANDIFLORUM. 

 chine' nse (Chinese). See P. GRANDIFLORUM. 

 ,, grandifto'rum (large-flowered). i. Blue. June. 



China and Japan. 1782. " Chinese Bellflower." 

 a'lbum (white), i. White. June. North of 



China. 1845. 

 a'lbum semiple'num (semi-double- white). i. 



White. June. China. 1845. 



,, Marie'sii (Maries's). \. Flowers larger. 1881. 

 ,, sine'nsis (Chinese). See P. GRANDIFLORUM. 



PLATYCRA TER. (From platus, broad, and krater, a 

 bowl ; in reference to enlarged calyx of the sterile 

 flowers. Nat. ord. Saxifragraceae.) 



A dwarf, hardy shrub allied to Philadelphus. Cuttings 

 in sand, under a hand-light in summer. Ordinary 

 soil. 

 P. argu'ta (acute). 1-2. Creamy-white. Japan. 



PLATY'LEPIS. (From platus, broad, and lepis, a 

 scale ; in allusion to the broad, overlapping bracts of the 

 spike. Nat. ord. Orchidaceas.) 



Greenhouse terrestrial orchids, with creeping rhizomes 

 and ascending leafy stems. Divisions. Fibrous loam, 

 fibrous peat, leaf-mould, and sand. 

 P. austra'lis (southern). $-1. Green, with the upper 



half of the lip white. Natal. 1906. 

 densifto'ra (dense-flowered). -1. Green, white, 

 with narrow segments. Mascarene Islands. 1906. 

 glandule' sa (glandular). S. Africa. 



