An Encyclopedia of Horticulture. 



189 



Folypodiun — continued. 



P, diversifolium (variable-fromled). 8ti. 1ft. t<i 2ft. long, 

 tufteil, sleiuler, naked. I'rniuls 1ft. to 2ft. long, 6in. to Sin. 

 liroail : pinna- 3in. to Sin. long, jin. to lin. broail, the apex 

 acuminate, the lower ones narrowect at base, the edge nearly 

 entire, xori in contiguous rows. South Brazil, &c. See Fig. 

 232. .Syn. p. /raxini/olium. 



P. diversifolium (variable-fronded), of R. Brown. A synonym 

 of /*. riijithditm. 



P. drepanum (sickle).* s/i'. tufted, 1ft. to Uft. long, with dark 

 scales below, friindu IJft. to 3ft. long. Sin. to 12in. broad ; lowest 

 pinn.T the largest, 6in. to Sin. long. liin. to 2in. broad ; pinnules 

 lanceolate, unequal-sided, auricled on the upper, truncate on the 

 lower, side at the base, with a broad, uncut centre and copious, 

 spinous teeth, the lowest stalked. suri medial. Madeira, 

 (ireenhouse. See Fig. 233. Syn. I'hegoptcris drepana. 



it 



Fig. 234. Polypodium Drvoptehis. 



P. Dryopteris (Dryopteris).* Oak Fern. rhiz. slender, wiiie- 

 creeping. di, 6in. to 12in. lonia;, slender, stramineous, scaly 

 below, naked upwards, fronds 6in. to lOin. each way, deltoid ; 

 lower pinnpe much the largest; pinnules lanceolate, only the 

 lowest free, oblong, slightly crenate. aori sub-marginal. Northern 

 hemisphere (Britain). See Fig. 234. 



P. D. Robertianum (Herb-Robert scented). A variety with a 

 thicker rhizome, the whole plant being more rigid than in the 

 type, and finely glandular. (H. B. F. 5.) 



P. elasticum (elastic), rhiz. stout, woody, short-creeping or 

 sub-erect, with brown scales, fronds 9in. to 18in. long, 2in. to 4in. 

 broad, lanceolate, cut down to the rachis into patent, adnate, 

 ligulate, entire, blunt forty to one hundred-jugate pinnse, the 

 liiwer ones gradually reduced, sor'i minute, superficial, medial. 

 Mexico, ttc, 1824. Syns. P. Plumula, P. Sckkuhri. 



P. enslfolium (sword-fronded). A form of /'. a ngusti folium. 



P. Filipes (thread-footed). A young state of P. tenellum. 



P. ft*aternuxn (fraternal).* rhiz. wide-creej)ing, with bright 

 ferruginous scales, uti. 4in. to Sin. long, firm, erect, naked. 

 fronds 1ft. to l^ft. long, 6in. to 9in. broad ; lower pinnae lin. 

 apart, 4in. to 5in. long, narrowed at both ends, and with 

 obscurely crenated edges. sori slightly immersed, medial, 

 unisuriate. Mexico. 8yn. P. Henchmanni. 



P. ft*axinifoliuiii (Ash-leaved), rh'z. stout, with dark brown 

 scales, sti. 1ft. to 2ft. long, finn. erect, naked, fronts 2ft. to 

 4ft. long, 1ft. to lift, broad ; pinna? numerous on each side, 

 distinct, 4in. to 9in. long, lin. to 2in. broad, the apex acuminate, 

 the base narrowed, and the edge entire, sori and areolce in 

 series r)f six to eight. Columbia, &c. See Fig. 235. SVN. 

 Goniophlcbium fraxini folium. 



P. fraxinifolium (Ash-leaved), of Jacquin. A synonym of 



/'. divcrsijolium. 



P. Gardner! ((Gardner's), rhiz. short-creeping; scales black, 

 boidered with brown, sfi. 3in. to 4in. long, firm, naked, fmnds 

 1ft. to l:ft. I'tiig, liii. to Uin. broad, narrowed gradually towards 

 both ends, with entire edges ; lower surface densely grey-tomen- 

 tose. suri in close rows of about four each betwetui the main 

 veins. Ceylon. (H. E. F. 68.) Syn. yiph'-hidus (iardneri. 



P. geminatum (paired), rhiz. very wide-creeping, stout, with 

 fenugiiH.iu.s scales, fronds sub-sessile, usually in distant pairs, 

 entire, uniform, 3in. to 6in. long, iin. to lin. broad, narrowed 

 towards both ends, but the point often blunt, sori in a row 



Polypodium — continued. 



midway between the edge and midrib, distinctly immersed. 

 Brazil. Sy.n. Anapelti-s [/eininata. 



P. Gmesbreghtii (CJhiesbreght's). xd. lit. or more long, firm, 

 erect, densely villous, frond.s 1ft. to Uft. long, with a terminal 

 pinna 6in. to 9in. long. Uin. to 2in. "broad, the edge slightly 

 lobed, and three to six similar ones on each side ; rachises and 

 under surface densely villous, ui^per surface slightly so. sori in 

 dense rows close to the main vein. South Mexico. Syn. Gonio- 

 pteris crenata. 



P. glaucophyllum (glaucous-fronded). rhiz. wide-creeping, 

 firm, deciduously scaly, sti. 2in. to 6in. long, scattered, tii-m, 

 erect, glossy, fronds 4in. to lOin. long, lin. to 2in. broad, 

 uniform, oblong-lanceolate, entire, with a rounded base and an 

 acuminate point. areoUr four to six in a series between the 

 edge and midrib, with one sorus in each. Tropical America, &c., 

 1874. Sv.\. (jniiiophkhiuin <ilaiicni>h]illiim. 



P. gonatodes (angled). A synonym of P. plesiosorum. 



P. graudidens (large-toothed). A variety of P. persiccvfolium. 



P. grandifoUum (large-fronded). A variety of P. membraiiaceum. 



-^S' 



A synonym of P. loricctim 



Fig. 235. Pinna of Polypodium fraxinifolium. 



P. guatemalense (Guatemalan), sti. 6in. to 12in. long, naked, 

 stramineous, fronds 2ft. to 3ft. long, 1ft. or more broad, with an 

 entire, terminal pinna 6in. to 8in. long, Ihi. to liin. broad, and 

 several similar ones on each side, the upper ones narrowed, but 

 adnate at the base, areokv in series of three or four, with the 

 large, uniseriate sori in the first or second row. Guatemala. 

 Syn. Phlebodium inrxquale. 



P. harpeodes (scimitar-like). 

 latii'cs. 



P. hastaefolium (spear-fronded). 

 wiry, deciduously scaly, fronds 

 broad ; pinn.T blunt, entire, „ 



auricle on both sides at the base, those of the lower half of the 

 frond gradually reduced, sori below the middle of the veinlets. 

 West Indies. Syn. Phajopteris hastafolia. 



P. bemlonitideum (Hemionitis-like). rhiz. hypogwous, woody. 

 .sti. lin. to 6in. lonji, firm, woody, fronds 9in. to 18in. long. 2in. 

 to 3in. broad, narrowed tu both eutls, with entire edges, sori in 

 an irregular row between each main vein, often confluent. India 

 and China. Syn. Colysis mcmbranacea. 



P. Henchmanni (Henchraanu's). A synonym of P. fratemum. 



P. Heracleum (Cow-Parsuip-like).* rhiz. stout, with light 

 brown, silky scales, fronds 3ft. to 6ft. long, 2ft. or more broad, 

 with a cordate lobed wing, ^in. broad, at the base ; upper part 



sti. tufted, lin 

 6in. to 9in. lon^ 

 broad, with 



to 2in. long, 



lAin. to 2in. 



iharp, distinct 



