Difference between revisions of "Marsilea vestita"
Icon. Filic. 2: plate 159. 1830.
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| − | --><span class="statement" id="st- | + | --><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>forming diffuse or dense clones. <b>Roots</b> arising at nodes. <b>Petioles</b> 2–20 cm, sparsely pubescent. <b>Pinnae</b> 4–19 × 4–16 mm, pubescent to glabrous. <b>Sporocarp</b> stalks erect, unbranched, attached at base of petiole (occasionally up to 3 mm above it), not hooked at apex, 0.5–25 mm. <b>Sporocarps</b> perpendicular or slightly nodding, 3.6–7.6 × 3–6.5 mm, 1.5–2 mm thick, elliptic to nearly round in lateral view, pubescent but soon glabrate, scars left by fallen trichomes often appearing as purple or brown specks; raphe 1.1–1.7 mm, proximal tooth 0.3–0.6 mm, blunt, distal tooth 0.4–1.2 mm, acute, often hooked at apex. <b>Sori</b> 14–22.</span><!-- |
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| + | |phenology=Sporocarps produced spring–fall (Apr–Oct). | ||
|habitat=Widespread and variable, in ponds and wet depressions and on river floodplains | |habitat=Widespread and variable, in ponds and wet depressions and on river floodplains | ||
|elevation=0–2300 m | |elevation=0–2300 m | ||
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|basionyms= | |basionyms= | ||
|family=Marsileaceae | |family=Marsileaceae | ||
| + | |phenology=Sporocarps produced spring–fall (Apr–Oct). | ||
|habitat=Widespread and variable, in ponds and wet depressions and on river floodplains | |habitat=Widespread and variable, in ponds and wet depressions and on river floodplains | ||
|elevation=0–2300 m | |elevation=0–2300 m | ||
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|publication year=1830 | |publication year=1830 | ||
|special status= | |special status= | ||
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|genus=Marsilea | |genus=Marsilea | ||
|species=Marsilea vestita | |species=Marsilea vestita | ||
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Revision as of 13:17, 27 July 2019
Plants forming diffuse or dense clones. Roots arising at nodes. Petioles 2–20 cm, sparsely pubescent. Pinnae 4–19 × 4–16 mm, pubescent to glabrous. Sporocarp stalks erect, unbranched, attached at base of petiole (occasionally up to 3 mm above it), not hooked at apex, 0.5–25 mm. Sporocarps perpendicular or slightly nodding, 3.6–7.6 × 3–6.5 mm, 1.5–2 mm thick, elliptic to nearly round in lateral view, pubescent but soon glabrate, scars left by fallen trichomes often appearing as purple or brown specks; raphe 1.1–1.7 mm, proximal tooth 0.3–0.6 mm, blunt, distal tooth 0.4–1.2 mm, acute, often hooked at apex. Sori 14–22.
Phenology: Sporocarps produced spring–fall (Apr–Oct).
Habitat: Widespread and variable, in ponds and wet depressions and on river floodplains
Elevation: 0–2300 m
Distribution
Alta., B.C., Sask., Ariz., Ark., Calif., Colo., Idaho, Iowa, Kans., La., Minn., Mont., Nebr., Nev., N.Mex., N.Dak., Okla., Oreg., S.Dak., Tex., Utah, Wash., Wyo., Mexico, South America in Peru.
Discussion
A number of segregate species have been named and recognized in regional floras in North America: Marsilea mucronata A. Braun (less hairy, found east of Rocky Mountains), M. uncinata (glabrous, sporocarp stalks long, distal tooth of sporocarp hooked, south central United States), M. tenuifolia (pinnae very narrow, central Texas), and M. fournieri (small plants and pinnae, southwest). The features upon which these species are based intergrade into one another. The species are therefore best treated as conspecific with M. vestita (D. M. Johnson 1986).
Putative hybrids between Marsilea macropoda and this species are discussed under the former.
Selected References
None.