AN ENCYCLOPAEDIA OF HORTICULTURE. 



309 



Lygfodium continued. 



L. heterodoxum (heterodox), primary/ petiole obsolete or very 

 short ; secondary IJin. long ; pinnules with two or three bipartite 

 segments, the ultimate divisions 4in. to 6in. long, Jin. broad, the 

 petioles not articulated, the lowest often iin. long, spikes one 

 line long, in close rows along the edge of the leafy divisions. 

 Mexico. SYNS. L. Lindeni (of gardens), Hydroglossum hetero- 

 doxum, Lygodictyon heterodoxum, and Lygodictyon Lindeni. 



\ 



FIG. 494. LYGODIUM JAPONICUM, showing Habit and detached 

 Portion of Frond. 



L. Japonicum (Japanese).* primary petiole very short ; secondary 

 Jin. to lin. long ; pinnules 4in. to Sin. long, nearly as broad, del- 

 toid ; the terminal segments piunatifid or hastate; the lateral ones 

 long-stalked, and pinnate in the lower part ; the divisions entire or 

 crenulate. spikes one to two lines long, the lamina of the fertile 

 divisions often much reduced. Japan to Australia. Greenhouse. 

 SYN. Ophioglcssum japonicum. See Fie;. 494. 



L. Lindeni (Linden's). A garden synonym of L. heterodoxum. 



L. microphyllum (small-fronded). A form of L. scandens. 



L. palmatum (palmate).* primary petiole slender, in. to Jin. 

 long, each fork in the lower part of the stem bearing a single cor- 

 date, palmate pinnule IJin. to 2in. broad, not so deep, bluntly four 

 to six-lobed more than half-way down, the slender petiole Jin. to 

 jin. long ; fertile pinnules sub-deltoid, three or four-pinnatifid, 

 formed only of winged rachises and short spike-like fertile ulti- 

 mate divisions, the latter linear, lin. to liin. long. Massachu- 

 setts to Florida. See Fig. 495. 



L. pedatum (pedate). A synonym of L. dichotomum. 



L. polymorphum (many-formed). A synonym of L. venustum. 



L. polystachyum (many-spiked), primary petiole short or ob- 

 solete ; secondary iin. to lin. long ; pinnules Sin. to 12in. long, 

 4in. to 6in. broad ; segments uniform, nine to twelve on each 

 side, 2in. to Sin. long, jin. broad, articulated at base, pinnatittd 

 more than half-way down to the rachis into close, entire, blunt 

 lobes, Ain. broad; upper segments sessile, lower ones short- 

 stalked. Malay Peninsula. 



L. reticulatum (reticulated).* primary petiole in. to Jin. long ; 

 secondary Jin. to iin. long ; pinnules 6in. to 9in. long, 4in. to 

 6in. broad, with a terminal segment, and four to six nearly 

 uniform ones on each side, which are cordate-hastate or ligulate- 

 oblong, rounded or cordate at the base, 2in. to Sin. long, iin. to 

 Jin. broad, all articulated at the base, the lowest short-stalked. 

 spikes one to three lines long, in close rows along the edge of the 

 segments. Polynesian Isles, &c. SYNS. L. Forsteri, L. Schkuhri, 

 Hydroglossum reticulatum, and Lygodictyon Forsteri. 



L, scandens (climbing).* primary petiole very short ; secondary 

 Jin. to iin. long ; pinnules 4in. to 8in. long, 2in. to 4in. broad, 

 with a terminal segment and four or five on each side, which are 

 very variable in shape, usually simple, ovate or ligulate-oblong, 

 with a rounded or cordate base, sometimes hastate or even slightly 

 pinnate below, always articulated on a short petiole, spreading 

 from the rachis at right angles, spikes one to three lines long, 

 in close rows along the edge of the segments. South China to 

 Ceylon, &c. SYN. Ophioglossum scandens. L. microphyllum is 

 a common form, with short broad segments. 



L. scandens (climbing), of Schkuhr. A synonym of L. wlubile. 



L. Schkuhri (Schkuhr's). A synonym of L. reticulatum. 



L. venustum (pleasing).* primary petiole very short ; secondary 

 Jin. to Jin. long ; pinnules 6in. to 12in. long, 4in. to 6in. broad, 

 with a terminal segment, and four to twelve on each side, which 

 are simple, ligulate-oblong, the lower ones usually hastate or 

 pinnate below, all articulated at the base, bluntly lobed at the 

 edge when barren, the upper ones sessile, the lower ones on a 

 spreading petiole, iin. to Jin. long, spikes one to four lines long, 

 in close rows. West Indies to Peru, 1845. SYN. L. polymorphum. 



Lygodinm continued. 



L. voiubile (twining).* primary petiole nearly or quite obsolete ; 

 secondary about lin. long ; pinnules Sin. to 12in. long, 6in. to lOin. 

 broad, with a simple broad, ligulate-oblong, terminal segment, 3in. 

 to 6in. long, lin. to IJin. long, and three to five like it on each 

 side, truncate or sub-cuneate, articulated at the base, and all 

 distinctly stalked, spikes one to three lines long, in close rows 

 along the edge of the leafy segments. West Indies and Mexico 

 to Brazil and Peru, 1810. SYNS. L. iMStatum, L. scandens. 



FiG. 495. LYGODIUM PALMATUM. 



LYONIA (named in honour of John Lyon, a col- 

 lector of North American plants). OED. Ericaceae. This 

 genus, formerly included under Andromeda, comprises 

 about eight species of hardy or greenhouse trees or 

 shrubs. They are natives of North America, Mexico, 

 Jamaica, and Cuba. Flowers small, in fascicles or 

 racemes, sometimes paniculate, axillary ; corolla urceo- 

 late or globose, pubescent, four or five-dentate ; teeth 

 recurved. Leaves alternate, petiolate, persistent or 

 deciduous, entire or obscurely serrulate. Lyonias succeed 

 best in peat or sandy loam. Propagation is effected 

 by layers; or by seeds, which, being extremely small, 

 require careful sowing in a sandy-peat soil. 

 L. ferruglnea (rusty-coloured). /. white ; pedicels aggregate, 

 axillary. April and May. 1. coriaceous, stiff, crowded, on short 

 petioles, cuneate-lanceolate, acute, quite entire, convex, with 

 revolute edges, h. 20ft. Carolina to Florida, 1774. Whole 

 plant clothed with brown, umbilicate, furfuraceous scales. Low 

 greenhouse shrub. SYN. Andromeda rigida (under which name 

 it is figured in L. B. C. 430). 



L. jamaicensis (Jamaica), fl. white ; corolla oblong. July. 

 I. bluntish, evergreen, glabrous, lanceolate or elliptical-lanceolate, 

 quite entire or repand, reticulated with veins, and at length 



jreen, glabrous, lanceolate or elliptical-lanceolate, 

 repand, reticulated with veins, and at lengtt 

 punctate beneath. Jamaica. Greenhouse shrub. (B. M. 4273.) 



