papery, slightly glandular; base not tapered; apex with elongate terminal pinna similar in size to subtending lateral pinnae, not rooting. Rachis green throughout
3 KB (269 words) - 21:25, 5 November 2020
herbaceous. Leaf primordia densely hairy, hairs 1.5–2mm. Leaf sheath open. Pinna divisions reduced in size to tip. First pinnule on basal pinnae usually borne
2 KB (212 words) - 21:21, 5 November 2020
crenate; apex rounded to acute. Veins free, evident. Sori 2–4 pairs per pinna, on both basiscopic and acroscopic sides. Spores 64 per sporangium. 2n =
3 KB (289 words) - 21:21, 5 November 2020
dull-scaly; scales brown, lanceolate. Veins free, obscure. Sori 3–7 pairs per pinna, on both basiscopic and acroscopic sides of lobes. Spores 64 per sporangium
3 KB (263 words) - 21:21, 5 November 2020
Leaf primordia with scattered hairs, hairs 0.6–1 mm. Leaf sheath closed. Pinna divisions reduced to tip. First pinnule on basal pinnae usually borne basiscopically
3 KB (216 words) - 21:25, 5 November 2020
cross section. Blade ovate-lanceolate, 1-pinnate, with a ± similar apical pinna, papery. Pinnae not articulate to rachis, segment margins serrulate to spinulose;
4 KB (284 words) - 21:23, 5 November 2020
without unconnected false veins. Soral involucres terminal on vein ends at pinna apices, broadly conic and flaring at mouth. Gametophytes composed of proximal
3 KB (254 words) - 21:25, 5 November 2020
notched, bearing proliferous bud. Veins free, obscure. Sori 1–4 pairs per pinna, on both basiscopic and acroscopic sides. Spores 64 per sporangium. 2n =
3 KB (248 words) - 21:25, 5 November 2020
margins crenate-serrate; apex obtuse. Veins free, obscure. Sori 3–7 pairs per pinna, on both basiscopic and acroscopic sides. Spores 64 per sporangium. Habitat:
2 KB (206 words) - 21:22, 5 November 2020
to crenate, lobed; apex obtuse. Veins free, evident. Sori 3–6 pairs per pinna, on both basiscopic and acroscopic sides of pinnae. Spores 64 per sporangium
3 KB (255 words) - 21:24, 5 November 2020
and 2d pinnae only slightly greater than between 2d and 3d pairs, basal pinna pair usually considerably larger than adjacent pair, obliquely rhomboidal
3 KB (198 words) - 21:25, 5 November 2020
1st and 2d pinnae not or slightly more than between 2d and 3d pairs, basal pinna pair approximately equal in size and cutting to adjacent pair, broadly fan-shaped
3 KB (239 words) - 21:25, 5 November 2020
margins lobed or serrate; apex obtuse. Veins free, obscure. Sori 2–6 pairs per pinna, on both basiscopic and acroscopic sides. Spores 64 per sporangium. Habitat:
2 KB (215 words) - 21:24, 5 November 2020
cm, gradually decreasing in length toward base; segments 20–40 pairs per pinna. Petiole of sporophyll 11–24 cm, base scaly. Blade oblong to oblanceolate
5 KB (460 words) - 21:24, 5 November 2020
in 1 row between midrib and margin, ± round, covered by hardened revolute pinna margin; indusia vestigial, triangular, persistent but not easily seen in
4 KB (432 words) - 21:25, 5 November 2020
Blade 30–70 cm, broadest at or near base, abruptly narrowed distally, apical pinna ± similar to lateral pinnae, 5–17 × 1–3(–5) cm. Pinnae (4–)10–22(–28) × (0
3 KB (290 words) - 21:21, 5 November 2020
reddish brown, ovate, glabrous. Blade elliptic, 15–60 cm, proximal 4–10 pinna pairs gradually smaller toward base (smallest often less than 5 mm), blade
4 KB (343 words) - 21:22, 5 November 2020
whitish farina, adaxially glabrous or glandular; rachis rounded adaxially. Pinna costae distinctly flexuous, branches arising from prominent angles. Ultimate
3 KB (247 words) - 21:22, 5 November 2020
margins ciliate-dentate to entire. Leaves 10–50 cm. Blade pinnate-pinnatifid, pinna pairs 20–45. Pinnae ovate to deltate, largest 7–15 mm, usually symmetrically
3 KB (261 words) - 21:24, 5 November 2020
less than 50 cm; pinna margins ± entire. Blechnum occidentale var. minor 2 Blades 1-pinnate throughout, usually more than 50 cm; pinna margins ± evenly
3 KB (164 words) - 21:25, 5 November 2020
somewhat evident, mostly free, rarely anastomosing. Sori 1–10(–15+) pairs per pinna, on both acroscopic and basiscopic lobes. Spores malformed (sterile form)
4 KB (482 words) - 21:22, 5 November 2020
apex rounded to acute. Veins free, evident. Sori as many as 30 or more per pinna, usually 1–5 per segment, on both basiscopic and acroscopic sides. Spores
5 KB (552 words) - 21:24, 5 November 2020
pinnules narrow, not auriculate. Veins free, evident. Sori 4–9(–10) pairs per pinna, subcostal, nearly parallel to costae on both basiscopic and acroscopic sides
3 KB (306 words) - 21:23, 5 November 2020
acute or rounded. Veins free, barely evident. Sori 3 to numerous pairs per pinna, on both basiscopic and acroscopic sides. Spores 64 per sporangium. 2n =
4 KB (391 words) - 21:22, 5 November 2020
rachis glabrous or with occasional glandular hairs, adaxial surface glabrous. Pinna apex entire, rounded. Proximal pinnae 3–10 cm, ± perpendicular to rachis
3 KB (324 words) - 21:24, 5 November 2020
coarsely incised; apex acute. Veins free, evident. Sori 1–numerous pairs per pinna [1–6 pairs per segment], on both basiscopic and acroscopic sides. Spores
3 KB (310 words) - 21:22, 5 November 2020
1st and 2d pinnae not or slightly more than between 2d and 3d pairs, basal pinna pair approximately equal in size and cutting to adjacent pair, fan-shaped
3 KB (287 words) - 21:23, 5 November 2020
and adaxially glabrous; rachis flattened or shallowly grooved adaxially. Pinna costae straight to somewhat flexuous, branches rarely arising from prominent
3 KB (202 words) - 21:21, 5 November 2020
1st and 2d pinnae not or slightly more than between 2d and 3d pairs, basal pinna pair approximately equal in size and cutting to adjacent pair, obliquely
3 KB (234 words) - 21:24, 5 November 2020
Pinnae (proximal) triangular, distal pinnae oblong; terminal segment of each pinna ca. 4 times longer than wide, longer ultimate segments less than their width
3 KB (220 words) - 21:23, 5 November 2020
glabrous or sparsely glandular; rachis rounded to slightly flattened adaxially. Pinna costae straight or nearly so, branches not arising from prominent angles
3 KB (222 words) - 21:22, 5 November 2020
ciliate-dentate to entire. Leaves 8–45 cm. Blade 1-pinnate to pinnate-pinnatifid, pinna pairs 20–45. Pinnae oblong to ovate, largest usually 7–15 mm, entire or asymmetrically
4 KB (337 words) - 21:21, 5 November 2020
1st and 2d pinnae not or slightly more than between 2d and 3d pairs, basal pinna pair approximately equal in size and cutting to adjacent pair, mostly narrowly
3 KB (241 words) - 21:24, 5 November 2020
1st and 2d pinnae not or slightly more than between 2d and 3d pairs, basal pinna pair approximately equal in size and cutting to adjacent pair, obliquely
3 KB (230 words) - 21:24, 5 November 2020
slightly more than between 2d and 3d pairs, asymmetrically cuneate, basal pinna pair often divided into 2 unequal parts, lobed to tip, margins entire, sinuate
3 KB (265 words) - 21:22, 5 November 2020
farina, adaxially glabrous; rachis rounded to slightly flattened adaxially. Pinna costae straight or nearly so, branches not arising from prominent angles
3 KB (258 words) - 21:25, 5 November 2020
and adaxially glabrous; rachis rounded to slightly flattened adaxially. Pinna costae straight or nearly so, branches not arising from prominent angles
3 KB (268 words) - 21:22, 5 November 2020
1st and 2d pinnae frequently greater than between 2d and 3d pairs, basal pinna pair commonly much larger and more complex than adjacent pair, cuneate to
6 KB (627 words) - 21:23, 5 November 2020
sterile pinnae to ca. 25 mm wide, fertile pinnae to ca. 15 mm wide; terminal pinna usually not decurrent on rachis. Habitat: Terrestrial or on rock on wooded
3 KB (225 words) - 21:22, 5 November 2020
pinnae less than 10 mm wide, fertile segments less than 8 mm wide; terminal pinna somewhat to barely decurrent on rachis. Habitat: Terrestrial or on rock in
2 KB (104 words) - 21:24, 5 November 2020
and abaxial, pale to light brown, 0.2–0.7 mm. Rachis 1.8–17 dm, points of pinna attachment 7.5–35 mm apart; scales moderately spaced, pale brown throughout
3 KB (289 words) - 21:21, 5 November 2020
near segment margin. > 4 4 Pinna costae distinctly flexuous; branches arising from prominent angles. Argyrochosma fendleri 4 Pinna costae straight or nearly
6 KB (486 words) - 21:25, 5 November 2020
reddish brown, ovate, glabrous. Blade elliptic, 20–70 cm, proximal 4–10 pinna pairs gradually reduced (smallest 5–20 mm), blade tapering gradually to pinnatifid
4 KB (294 words) - 21:21, 5 November 2020
pinnatifid distally, or pinnatifid throughout, without conform terminal pinna, 10-30 × 3-12 cm, base truncate, pubescent abaxially. Rachis with indument
4 KB (315 words) - 21:22, 5 November 2020
rachis glabrous or with sparse glandular hairs, adaxial surface glabrous. Pinna apex acuminate. Proximal pinnae 5–18 cm, ± perpendicular to rachis, with
4 KB (363 words) - 21:24, 5 November 2020
glandular, rachis densely glandular, adaxial surface moderately glandular. Pinna apex acute. Proximal pinnae 3–13 cm, ± perpendicular to rachis, basiscopic
5 KB (429 words) - 23:29, 20 February 2024
lacking indument abaxially. Pinnae articulate to rachis except for terminal pinna, subsessile to short-stalked; larger pinnae ± straight, linear to linear-elliptic
2 KB (208 words) - 21:23, 5 November 2020
13–25 cm; rachis slightly and evenly winged, wing constricted above each pinna pair. Pinnae 3–7 pairs, widely spaced, distal pinnae simple, adnate and decurrent
3 KB (285 words) - 21:21, 5 November 2020
scaly abaxially near costae and adaxially. Rachis 2.4–16.3 dm, points of pinna attachment 7.3–21 mm apart; scales moderately spaced, pale to dark brown
3 KB (286 words) - 21:24, 5 November 2020
appressed hairs. Pinnae not articulate, dark color of stalk continuing into pinna base, basal pair slightly larger than adjacent pair, somewhat inequilateral
3 KB (277 words) - 21:22, 5 November 2020