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
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
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
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
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 (233 words) - 21:24, 5 November 2020
oblong-lanceolate, 2–3-pinnate, (2–)6–12(–18) × 2.7–10 cm, thin, glabrous; basal pinna pairs unreduced to reduced 1/4; apex gradually reduced, not rooting. Rachis
3 KB (244 words) - 21:25, 5 November 2020
obtuse, broadly rounded. Veins free, evident to obscure. Sori 1–3 pairs per pinna on both basiscopic and acroscopic sides. Spores 64 per sporangium. 2n = 144
3 KB (273 words) - 21:23, 5 November 2020
1st and 2d pinnae considerably greater than between 2d and 3d pairs, basal pinna pair approximately equal in size and cutting to adjacent pair, fan-shaped
3 KB (256 words) - 21:25, 5 November 2020
shallowly crenate; apex obtuse. Veins free, obscure. Sori 2–5 pairs per pinna, on both basiscopic and acroscopic sides, often confluent with age. Spores
3 KB (270 words) - 21:23, 5 November 2020
± entire; apex acute to obtuse. Veins free, obscure. Sori 1–5 pairs per pinna, on both basiscopic and acroscopic sides. Spores 32 per sporangium. n = 2n
3 KB (280 words) - 16:04, 9 December 2021
remotely lacerate; apex acute. Veins free, obscure. Sori usually 2+ per pinna, parallel to margins. Spores 64 per sporangium. 2n = 144. Habitat: Cliffs
3 KB (303 words) - 21:22, 5 November 2020
crenulate or ± entire; apex obtuse. Veins free, obscure. Sori 1(–3) per pinna, only on basiscopic side. Spores 32 per sporangium. n = 2n = 108 (apogamous)
2 KB (210 words) - 21:24, 5 November 2020
1st and 2d pinnae not or slightly more than between 2d and 3d pairs, basal pinna pair commonly much larger and more divided than adjacent pair, lobed to tip
3 KB (259 words) - 21:24, 5 November 2020
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