1900 SUPPLEMENT—RECENT INTRODUCTIONS, &cC. 549 
Nephrodium—continued. 
N. cristatum-marginale (hybrid). A supposed natural 
hybrid between the parents indicated by its name. 1896. 
(G. & F. 1896, p. 444, f. 58.) 
N. denticulatum (small-toothed). sti. tufted, lft. or more 
in length, densely scaly at base, naked above. fronds 
triangular, coriaceous, lft. to 2ft. long, 8in. to 12in. broad ; 
lowest pinne much the largest; lowest pinnules the largest, 
lanceolate, the segments cut into spathulate lobes furnished 
with spiny teeth. sori scattered over the whole under-surface. 
Tropical America. 
N. deparioides (Deparia-like). sti. firm, lft. or more in 
length, slightly scaly below. ‘fronds oblong-lanceolate, 14ft. to 
2ft. long ; lower pinne 4in. to 6in. long, lanceolate; pinnules 
unequal-sided, stalked, triangular, their broad, blunt, nearly 
quadrangular lobes distinctly toothed. sori terminal in the 
teeth (as in a Deparia). Southern India, &e. Greenhouse. 
Syn. Lastrea deparioides. 
N. dilatatum (enlarged). A form of N. spinuloswm. 
N. divergens (diverging). A synonym of NV. efusum. 
N. divisum (divided). a synonym of NV. Boryanum. 
N. effusum (spreading).* rhiz. short-creeping, woody. _ sti. 
2ft. or more in length, scaly below. fronds pale green, 
beautifully geeomppany, 4ft. long, 2ft. broad, four or five 
times pinnatifid; lower pinne the longest, lft. to 14ft. long, 
often lft. broad; pinnules lanceolate, closely set; segments 
lanceolate, unequal-sided, the lower ones cut to the midrib 
into pinnatifid lobes. sori scattered over the under-surface, 
usually devoid of involucre. Mexico, &c. Syns. Polypodium 
divergens, P. effuswm. : 
N. elongatum (elongated). A variety of N. Filix-mas. 
N. erythrosorum prolificum (prolific). /ronds rigid, deltoid, 
bipinnate, deep green, gemmiparous in the axils of the 
segments and on the margins; pinne rather distant, obliquely 
ovate-lanceolate, the posterior side most developed; pinnules 
unequal, but usually linear, acute, and somewhat falcate. 
sori numerous, large, reniform, distributed over the whole 
back of the frond, covered by prominent indusia. Japan, 1883 
An interesting variety. 
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Fic. 584. FROND OF NEPHRODIUM FILIX-MAS RAMOSISSIMUM. 
N. Filix-mas. The following are well-marked forms: athyrioides, 
Barnesti, Borreri, dentatum, elongatum, Findleyanum, foliosum, 
Ingramii, interrupta, Jervisii, Loweiw, magnijica, Mapplebeckii, 
multi-cristatum, propinquum, ramo-cristatum, ramosissimum 
(see Fig. 584), ramosum, ramulosissimum, Scottii, Willisonii, 
Winstanleyi. 
N. glabellum (smoothish). A form of N. decompositum. 
N. Grisebachii (Grisebach’s). This gigantic, stove species is 
allied to N. setigerum, differing principadly in its larger size 
and in its stipes being densely clothed at base with scales 
fully lin. long, which leave distinct tubercles when they fall. 
al. 
N. hirtipes. Syn. Aspidiwm atratwm. 
N. Hopeanum (Lieut. Hope's). sti. lin. to ljin. long, grey, 
glossy, naked. fronds oblong-lanceolate, lft. long, 6in. to Tin. 
Fn he 
Nephrodium—continued. 
broad, bipinnatifid; pinnz distant, sessile, caudate, the lower 
ones din. to fin. long, gin. to Zin. broad, cut down to a narrow 
wing into ligulate-faleate, entire lobes gin. broad; tip of frond 
like one of the pinne; rachis grey, slightly pubescent. sort 
crowded close to the midrib; involucre firm, persistent. Poly- 
nesia, 1883. Syn. Lastrea Hopeana. 
N. incisum (cut). sti. tufted, 2in. to din. long, scaly below. 
Jronds narrow-oblong, lft. or more in length, Zin. to lyin. 
broad, coriaceous, finely hairy below, gradually narrowed 
towards the base, with triangular or lanceolate lobes often 
not reaching more than one-third the way to the rachis. 
sori nearly marginal; involucre very fugacious. West Indies 
and Colombia. 
N. irregulare (irregular). A synonym of N. latifolium. 
N. javanicum (Java). A synonym of Didymochlwna polycarpa. 
N. Jenmani (Jenman’s), sti. stout, scaly, erect. fronds bi- 
pinnate, about 2ft. long and Qin. to 12in. broad, densely 
pellucid-dotted. Jamaica, 1887. Syn. Lastrea Jenmani. 
N. latifolium (broad-leaved). stz, ebeneous, lft. or more in 
length. fronds 2ft. to 3ft. long, lin. to lJin. broad, deeply 
pinnatifid at apex; pinne three to five on each side, the lowest 
(much the tasece) in. to 12in. long, 6in. to 8in. broad, soft, 
greyish. sori disposed in rows, principally close to the main 
veins. Polynesia. Syns. N. irregulare, Sagenia irregularis. 
N. Lawrenceanum (Lawrence's). caw. 3in. to 4in. high. sti. (as 
well as the rachis and costa beneath) blackish. fronds 2ft. or 
more in length, gracefully arching, ovate, pinnate below, 
pinnatifid above; pinne falecate, pinnatitid, the lower ones 
about 14ft. long. Madagascar, 1881. SyN. Sagenia Lawrenceana. 
N. lepidum (pretty). sti. green, setose on the margins of the 
groove down the face. fronds ovate, acuminate; pinne 
alternate, very shortly stalked, lanceolate, acuminate, pin- 
natifid, the central ones longest, glabrous, with hairy midribs 
and setose margins. sori placed near the midribs on each 
side, with inflated, roundish-reniform, lead-coloured, hairy 
indusia. 1886, An elegant Fern. SyN. Lastrea lepida. 
N. lucidum (clear). rhiz. short-creeping, with a few small, 
brown basal scales. sti. contiguous, lin. to 3in. long. fronds 
oblong-lanceolate, bipinnatifid, glabrous, lft. to lift. long, Sin. 
to 6in. broad; pinne twelve to twenty pairs, sessile, linear, 
pinnatifid. sori apical on the veins. Madagascar, 1877. Habit 
of N. sophoroides. 
N. macrophyllum (large-fronded).* sti. tufted, dull brownish, 
lft. to 2ft. long, scaly below. fronds composed of a large ter- 
minal pinna (often forked at base) and from four to eight 
lanceolate ones on each side, entire or slightly lobed, the 
lowest pair distinctly forked at base. sori reniform, in two 
rows between each primary vein, and usually situated on the 
middle of a veinlet. West Indies, &e. SyNns. Aspidiwm 
macrophyllum, Sagenia macrophylla. There is a garden variety 
calvatum. 
N. mamillosum (nippled). This species closely resembles 
N. decurrens; but the pinne are undivided, and the sori are 
so deeply immersed as to make the upper surface appear as 
if covered with minute nipples. Moluccas, 1886. SYN. Sagenia 
mamillosa (I. H. 1886, 598). 
N. marginale. Syn. Aspidiwm marginale. In the variety 
elegans most of the pinnules are twice or thrice as long as in 
the type, and all are pinnatifid. 
N. Maximowiczii (Maximowicz’s). sti. light brown, glossy, 
scaly, 6in. to 8in. long. jronds smooth, deltoid, quadripinnatifid, 
about lft. each way; lowest pinne the largest, long-stalked, 
produced on the lower side; their lowest pinnules and segments 
deltoid, stalked, cuneate at base; the ultimate lobes unequal- 
sided, toothed. sori small, just below the final notches; 
involucre persistent. Japan. Greenhouse. Syn. Lastrea 
Maximowiczii. 
N.molle. Several varieties of this species have been produced, 
including polydactylon, violascens, and Sangwelli, which last is 
of free growth, very ornamental for pots or for the rockery. 
1884. 
N. montanum Barnesii (Barnes'). fronds much narrower 
than in the type. A pretty variety. 
N. m. coronans (crowned). A finely crested variety; the 
apex of the frond is developed into a large, crisped tuft, and 
the apices of the pinne have smaller, roundish, crisped ones. 
1882 
N. nevadense (Nevada). Sierra Shield Fern. rhiz. creeping, 
slightly scaly. fronds pale green, l}in. to din. long, in- 
cluding the short stipes; divisions of the pinne in the 
fertile fronds generally folded together early in the day, 
opening in the afternoon. sori close to the margins, covered 
with a minute, hairy indusium. Sierra Nevada, &c. Green- 
house. 
N. opacum (opaque). This hardy garden lant has the 
AreArAuce of s amt lenived, dull form of y erythrosorum, 
and is said to be Japanese; its fronds, however, never show 
the beautiful tints of the species named. It is rarely affected 
by gas, smoke, or fog. SYN. Lastrea opaca. 
N. Oreopteris (Mountain Fern). A synonym of WV. montanum., 
