An Encyclopedia of Horticulture. 



201 



Fopnlna — continued. 



for carving, charcoal-making, &c. ; the bark is employed in 

 tanning. (Sy. En. B. 1302.) Fur figure ami dimensions of an 

 enormous specimen of this tree, *■*''' U. <■'. n. s., xxi. 641. 



P. n. pyramldaliS (pyramidal).* Lomhardy Poplar. Young 

 leaves and bninclilets ' glabrous. Habit pymmidal. SvNS. 

 J\ dilafata, I', lastigiata. 



P. Simonii (Simon's). /. thick, suh-erect, 5in. to 6in. long, about 

 3in. broad, nvate-elliptic, equally attenuated at each end, dentate, 

 crispt-d, intense green above, glaucous-white beneath. Branches 

 elon,L,':ited ; b:irk redilisli-brown. China. 1867. A tall tree. 



P. tomentosa (tomentose). I. oval, 4in. to I in. long. 2in. to 2iin. 

 broad, usually cordate at base, very acutely toothed, intense 

 green above, white-tomentose beneath. Young branchlets tomen- 

 tose, adult ones glabrous ; buds thick, conical, woolly-tomentose. 

 China, 1867. 



Fig. 254. Barren BRA^'CHLET, anp one Bearing Male Catkin, 



OF POPULVS TREMULA. 



P. Tremnla ttreml>ling).* Aspen, fl., catkins 2in. to 3in. long, 

 cyhndric. March and April. I. lin. to 4in. long ; tho,se of the 

 shoots cordate, acute, entire, cottony beneath ; those of the 

 branches sub-orbicular-ovate, sinuate-serrate, with incurved teeth, 

 glabrous or silky beneath ; petioles very long, slender, glabrous ; 

 compre.ssed branches spreading ; buds pubescent, not viscid. 

 h. 40ft. to 80ft. Arctic Europe (Britain), Africa, Asia. A well- 

 known, erect tree, with white wood and grey bark. See Fig. 264. 

 (Sy. En. B. 1307). The varieties vdlosa and glabra have re- 

 spectively villous and more glabrous foliage than the type. 



P. T. pendula (pendulous). A variety only differing from the 

 type in its very penduloas branches. It makes a small, round- 

 headed tree, anrl is best grafted on tall stems of the type. 



P. tremuloides (Tremula-like). American Aspen. I. runn<lish- 

 cordate, with a short, sharp point, and small, somewhat regular 

 teeth, smooth on both sides, with downy margins ; petioles 

 long, slender, and laterally compressed. Adult branches glabrous ; 

 buds also glabrous, viscous, h. 20ft. to 50ft. North America. 

 (K. T. S. M. 280, under name of 1'. tremidifonnis,) Svn. i*. grrvca. 



FOBiANA (said to be the native name in the East 

 Indies). Syns. Dinetua, Duperrya. Ord. Convolvulacece. 

 A genus comprieing balf-a-dozen species of stove or green- 

 house, twining, slender, sometimes very high-climbing, 

 annual herbs or shrubs, natives of the East Indies, the 

 Malayan Archipelago, and Australia. Flowers frequently 

 white, sometimes cymose or racemose at the apices of 

 the branches, sometimes solitary in the axils ; sepals sub- 

 equal, stellato-patent : corolla campanulate or infundi- 

 buliform ; limb plicate, of five broad, spreading lobes. 

 Leaves sometimes cordate, many-nerved ; sometimes ecor- 



Vol. IIL 



Forana — contin ued, 

 date, penniveined. The shrubby species are well adapted 

 for training on rafters or pillars, in a stove, or in the warm 

 part of a greenhouse. They thrive best in a compost 

 of sandy loam and leaf mould, and are propagated by 

 cuttings of stubby side shoots, which root readily in a 

 compost similar to that just named. The annual species 

 may be sown in heat, in early spring, and the seedlings 

 either grown on in pots or planted out in the green- 

 house or conservatory. 



P. paniculata (panicled). Jl. pure white, very small, tubularly 

 campanulate ; panicle large, much liranched, leafy. August. 

 /. cordate, acuminate, glabrous above and hoary beneath, 3in. 

 long. liin. broad. Stem terete. East Indies, 1823. Plant 

 shrubby, twining, clothed with hoary tomentum. Syn. Dinetus 

 paiiiculattis. 



P. racomosa (racemose).* /I. white, small ; panicles loose- 

 flowered, composed of racemes, leafy. July to November. 

 I. cordate, acuminate, glabrous or downy, 5in. to 4in. long, 

 with a wide recess at the base. Stem terete or angular. 

 India, 1825. Annual. " This is the ' Snow-creeper ' of the 

 hnglish, one of the most beautiful of Indian plants, the masses 

 of dazzling white flowers resembling snow patches in the 

 jungle" (C. B. Clarke). (S. B. F. <;. 127.) Svn. Dinetus race- 



P. VolubiUs (twining). Ji. white, small, numerous ; panicles 

 dense-flowered. July. I. cordate, acuminate, glabnms. Stem 

 terete, glabrous, smooth or covered with white warts. East 

 Indies, 1823. Plant shrubby. 



FOR ANT HERA (from poron, a pore or opening, and 

 antJiern. an anther: the anthers open by pores). Ord. 

 EtipliorhiaretT. A genus comprising five species of green- 

 house, Australian herbs, annual or at length suffrutescent. 

 Flowers white, moncecious, small, densely racemose, soli- 

 tary in the axils of the bracts, pedicellate ; females few, 

 at the ba?e of the capituliform racemes, which are solitary, 

 or corymbose at the tips of the branches. Leaves alter- 

 nate or rarely irregularly opposite, membranous, entire, 

 small or narrow. P. eririfolia, the only species in cultiva- 

 tion, is a rather ornamental suffrutescent herb. It thrives 

 in a peaty soil, and may be increased by seeds. 



P. eridfolia (Heath-leaved). Ji. numerous, the pedunculate 

 racemes forming a dense, terminal, leafy corymb, July. 

 I. crowded, sessile, linear, Jin. to jin. long, with revolute 

 marg:ins. Stem erect, 6in. to nearly 12in. high. 1824. (T. L. S. 

 X. 22, p. 301.) 



FORIiIIIIMA (named after Andrew de Porlier, a 

 Spanish patron of botany.) Ord. Zijgophyllece. A small 

 genus (three species) of rigid, stove shrubs, with spreading, 

 woody branches, natives of Texas, Mexico, the Peruvian 

 Andes, Chili, and Parana. Flowers disposed in fascicu- 

 late, one-flowered peduncles ; sepals four or five, rotundate, 

 unequal, deciduous ; petals four or five, unguiculate, im- 

 bricated. Leaves opposite, abruptly pinnate ; leaflets 

 almost opposite, entire, sensitive. The under-mentioned 

 species (the only one introduced) thrives in a mixture 

 of loam and peat. Propagation may be effected by 

 ripened cuttings, inserted thinly in a pot of sand, and 

 placed under a hand glass, in moderate heat. 



P. hygrometrica (hygrometric). _fl. green, white ; calyx deeply 



four-parted ; petals four, connivent. April. I, with seven or 



eight iiuirs of linear leaflets ; these remain spread open during 



fair weather, but contract on the approach of rain. h. 2ft. 



Peru, 1820. 



FOROSTEMA. A synonym of Nectandra (which 

 see). 



FOBtFAX (of Lindley). Included under Eria. 



FOBFAX (of Salisbury). A synonym of AspuJistrn. 



FOBFHYKA. A synonym of CaUirurpa. 



FORFHYBIiUS. Of a warm reddish-colour. 



FOBFHTROCOMA. Included under Dianthem. 



FOKRUM. Included under Allium. 



FOBTEA (named after Marius Porte, who first 

 discovered the genus). Including Ortgiesia. Ord. 

 Bromelidceoe. A genus comprising three or four species 

 of stove, American herbs, with short stems. Flowers 

 beneath the upper bracts solitary, those under the lower 



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