AN ENCYCLOPEDIA OF HORTICULTURE. 



67 



Pellsea continued. 



largest, with the pinnules on the lower side much larger than the 

 others, and deeply lobed, with linear-oblong segments, son' in 

 broad, marginal lines. Tropics, 4c, Greenhouse. 



P. glauca (glaucous). . 4in. to Sin. long, tufted, strong, erect, 

 dark chestnut-brown, fronds Sin. to 4in. each way, deltoid, 

 qoadripinnatifid ; lowest pinna much the largest, and the 

 pinnules on the lower side larger than the others, lanceolate- 

 deltoid, cut down to the rachis into segments, which are again 

 cut down to the rachis below ; ultimate divisions about in. long, 

 linear-oblong, with inrolled edges, more or less crenate ; lower 

 surface and rachis tomentose. Involucres coriaceous, rolled 

 down over the son. Chili and Mexico. Stove. Srs. Pteris 

 glauca. 



P. gracilis (slender), sti. 2in. to Sin. long, scattered, slender, 

 straw-coloured or pale brown, fronds 2jn. to 4in. long, lin. to 

 2in. broad, ovate, hi- or tripinnatifid ; pinnae deltoid-lanceolate, 

 lin. to 2in. long, cut down to the rachis ; lower pinnules some- 

 times again slightly divided; ultimate segments of the barren 

 frond obovate, slightly crenate ; those of the fertile one linear- 

 oblong, the terminal one much larger than the others. Invo- 

 lucres broad, continuous, membranous. North America, North 

 India, &c. Greenhouse. (H. S. F. 133&) SYNS. P. SUlUri, 

 Pteris graciUs, Pteris SteUeri. 



Pellaea continued. 



FIG. 71. PEUJEA HASTATA. 



P. hastata (spear-shaped).* sti. 6in. to 12in. long, wiry, erect, 

 dark chestnut-brown, frond* 6in. to 2ft. long, 6m. to 12m. broad, 

 oblong, bi- or tripinnate ; pinnae erecto-patent, varying from 

 simply pinnate to copiously bipinnate ; ultimate divisions 1m. to 

 2in. long, ovate or lanceolate, not toothed, sessile or nearly so. 

 sori in a narrow, continuous, marginal line ; involucres rather 

 narrow, membranous, nearly or quite hidden when the fruit 

 is mature. South Africa. Greenhouse. See Fig. 71. 



P. Intramarginalis (involucred within margin), sti. Sin. to 6|n. 

 long, erect, tufted, dark chestnut-brown, fronds 6in. to 12in. 

 long, 25n. to 4in. broad, ovate-lanceolate, bipinnatifid ; pinnae 2in. 

 to Sin. long, lanceolate, opposite, cut nearly to the rachis into 

 linear-oblong pinnules, sori copious, confluent, marginal ; invo- 

 lucres broad, membranous, fringed. Mexico and Guatemala, 

 1841. Stove. 



P. L serratifolia (serrate-leaved). In this variety the pinnules 

 are distinctly toothed. Sm Pteris fallax. 



P. involuta (involute), sti. 2m. to Sin. long, wiry, erect, 

 blackish, tufted, fronds Sin. to 4in. long, lin. to liin. broad, 

 oblong-lanceolate, tripinnatifid; lower pinnae opposite, deltoid- 

 lanceolate, cut down to the rachis into several deltoid pinnules, 

 the upper of which are ternately lobed, the lower cut down to 

 the rachis below, sori continuous ; involucres distinct and pale, 

 membranous. Cape Colony, Ac. Greenhouse. 



P. longimncronata (long-mucronate). A synonym of P. tnu- 

 cronatct. 



P. mucronata (mucronate). sti. 2in. to 4in. long, tufted, erect, 

 dark brown, fronds Sin. to 6in. long, lin. to Sin. broad, deltoid, 

 bipinnate ; pinnae lin. or more long, spreading or erecto-patent, 



rigid, with several distant, linear-oblong pinnules on 

 about Jin. long, with inrolled edges and a sharp, 



- rrorran 



each side 

 mucronate 



mucronata (H. S. F. 115A), P. Wrightiana (H. S. F. 115B). ' 

 P. ornithopus.* Bird's-foot Fern. sti. Sin. to 6in. long, tufted, 

 rigid, dark chestnut-brown, fronds 4in. to 6in. long, 2in. to Sin. 

 broad, deltoid, bipinnatifid ; pinnae lin. to liin. long, Jin. to Sin. 

 broad, rigid, spreading, with numerous, distantly-placed, sessile 

 pinnae on each side, which are cut to the base into three linear, 

 mucronate segments, of which the central one is the largest In- 

 volucres broad, coriaceous, crenate, rolled permanently over the 

 sori. California 1875. Greenhouse. (H. S. F. 116A.) 

 P. paradoxa (paradoxical), sti. 6in. to 9in. long, strong, erect, 

 dark brown, sometimes slightly tomentose. fronds 6in. to 9in. 

 long, 4in. to 6in. broad, oblong, simply pinnate ; pinnae four to 

 six on each side, short-stalked, with a considerable space between 

 them, liin. to 2in. long, lanceolate, entire, acute or bluntish, 

 cordate or rounded at the base ; rachis tomentose. sori in a 

 marginal line, often &in. broad, soon hiding the involucre. Aus- 

 tralia. Greenhouse. (H. S. F. lllA.) STN. P. Broumii. 

 P. pulchella (pretty), sti. 2in. to Sin. long, wiry, erect, dark 

 chestnut-brown, tufted, fronds Sin. to 6in. long, lin. to Sin. 

 broad, oblong, tripinnate ; lower pinnae deltoid ; pinnules 

 lanceolate ; ultimate segments very deciduous, oblong, 

 blunt, about sin. long and half as broad ; edges of the 

 fertile segments much inrolled. Involucres broad, per- 

 manently rolled over the sori. Andes of tropical 

 America. Stove. 



FIG. 72. PORTION OF FROND OF PKLLMA. ROTUHDIFOUA. 



P. rotundifolia (round-leaved).* rhiz. stout, scaly, 

 creeping, sti. 6in. to 12in. long, stout, erect, more or 

 less pubescent and scaly, fronds 6in. to 12in. long, lin. 

 to liin. broad, linear, simply pinnate; pinnae ten to 

 twenty on each side, short-stalked, oblong or roundish, 

 entire, obtuse or mucronate at the apex; rachis 

 densely scaly and tomentose. sori in a broad, marginal 

 line soon hiding the involucre. New Zealand and Norfolk 

 Island, 1841. Greenhouse. See Fig. 72. 

 P. saglttata (arrow-like). A variety of P. eordata. 

 P. SteUeri (Steller's). A synonym of P. yraeilis. 

 P. ternifolia (ternate-leaved). sti. 2in. to 4in. long, strong, erect, 

 dark chestnut-brown, densely fibrillose at base, fronds 6m. to 

 12in long, lin. to liin. broad, lanceolate-linear, with six to twelve 

 opposite pairs of pinnae, which are cleft nearly to the base into 

 three linear, mucronate, rigid segments, with inrolled edges. 

 Involucres formed out of the edge of the frond, rolled over the 

 sori till they attain full maturity. Tropical America, 184L 

 Stove. 

 P. Wrightiana (Wright's). A synonym of P. mueronata. 



PELLIONIA (named after A. M. J. Alphonse 

 Pellion, an officer in Freycinet's voyage round the 

 world). OBD. Urticacece. A genus comprising fifteen 

 species of mostly stove herbs, often creeping at base, 

 rarely suffruticose ; they inhabit tropical and Eastern 

 Asia, as far as Japan, and the Pacific Islands. Flowers 

 dioecious or monoecious, densely cymose or sub-capitate; 

 perianths of five, rarely four, divisions. Leaves variable. 

 The only species introduced are stove, creeping, perennial 

 herbs, with ornamental foliage. They thrive in rich, 

 sandy loam, and require a moist atmosphere. Propa- 

 gated by divisions, or by cuttings. 



