familyThelypteridaceae
genusPhegopteris
Show Lower Taxa
Difference between revisions of "Phegopteris"
Mém. Foug. 5: 242. 1852.
Common names: Beech fern
Etymology: Greek phegos, beech, and pteris, fern
Basionym: Polypodium sect. Phegopteris C. Presl
Synonyms: Thelypteris subg. Phegopteris (C. Presl) Ching
Treatment appears in FNA Volume 2.
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| − | --><span class="statement" id="st- | + | --><span class="statement" id="st-undefined" data-properties=""><b>Stems </b>long-creeping, 1–4 mm diam. <b>Blades</b> 2–3-pinnatifid in proximal part, broadest at base, apex gradually reduced; pinnae deeply lobed, mostly strongly adnate, connected by wing along rachis, wing sometimes forming lobe between pinnae and served by vein arising from rachis; costae not grooved adaxially; buds absent; veins free, simple or often forked, distal veins of segment reaching margin or nearly so; indument abaxially of unbranched, unicellular hairs, rachises and costae also with spreading, ovate-lanceolate scales. <b>Sori</b> round to oblong, supramedial to inframarginal, lacking indusia; sporangial capsule often bearing stalked glands or hairs. <b>x</b> = 30.</span><!-- |
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Revision as of 14:25, 27 July 2019
Stems long-creeping, 1–4 mm diam. Blades 2–3-pinnatifid in proximal part, broadest at base, apex gradually reduced; pinnae deeply lobed, mostly strongly adnate, connected by wing along rachis, wing sometimes forming lobe between pinnae and served by vein arising from rachis; costae not grooved adaxially; buds absent; veins free, simple or often forked, distal veins of segment reaching margin or nearly so; indument abaxially of unbranched, unicellular hairs, rachises and costae also with spreading, ovate-lanceolate scales. Sori round to oblong, supramedial to inframarginal, lacking indusia; sporangial capsule often bearing stalked glands or hairs. x = 30.
Distribution
North temperate and boreal, 1 in temperate e Asia.
Discussion
Species 3 (2 in the flora).
Selected References
Lower Taxa
Key
| 1 | Proximal pair of pinnae (7–)10–20 cm, connected to those next above by wing along rachis; scales on costae abaxially whitish to light tan, narrowly lanceolate, mostly 3–5 cells wide at base; hairs of costae abaxially mostly less than 0.25 mm, a few sometimes to 0.5 mm; segments of larger pinnae deeply lobed; veins always forked to pinnate. | Phegopteris hexagonoptera |
| 1 | Proximal pair of pinnae 3–10(–15) cm, sessile or slightly adnate to rachis; scales on costae abaxially tan to often shiny brown, ovate-lanceolate, usually 6–12 or more cells wide at base; hairs of costae abaxially mostly more than 0.3 mm with many ca. 0.5 mm; segments of pinna entire or crenate, rarely shallowly lobed; veins in segments of middle pinnae mostly simple. | Phegopteris connectilis |