Difference between revisions of "Cheiroglossa palmata"
Suppl. Tent. Pterid. 57. 1845.
Common names: Hand fern
Illustrated
Basionym: Ophioglossum palmatum Linnaeus Sp. Pl. 2: 1063. 1753
Treatment appears in FNA Volume 2.
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|name=Ophioglossum palmatum | |name=Ophioglossum palmatum | ||
|authority=Linnaeus | |authority=Linnaeus | ||
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| − | --><span class="statement" id="st- | + | --><span class="statement" id="st-undefined" data-properties=""><b>Roots </b>tan, to 15 per plant, 1–1.5 mm diam., proliferating in humus or underneath palm leaf bases. <b>Stems</b> 0.5–1.5 cm, covered near apex with dense tuft of white to light brown, multicellular hairs to 7 mm. <b>Trophophore</b> blades green, shiny, to 45 × 30 cm, proximal margins diverging 90°–150° from stalk, with up to 7 rounded to mostly linear, acute lobes; venation complex-reticulate, very coarse, veinlets included in (usually elongate) very large major areoles to 35 × 8 mm, veinlets free or sometimes forming individual secondary areoles; blades firm, herbaceous. <b>Trophophore</b> stalk well defined, 1–2.5 times as long as trophophore blade. <b>Sporophores</b> single and central only on youngest or smallest leaves, normally to 10 per leaf, arising closely spaced from both sides of base of trophophore blade and top of stalk, sporangial clusters 1–7cm × 2.5–3 mm, apiculum absent.</span><!-- |
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name=Cheiroglossa palmata | name=Cheiroglossa palmata | ||
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|publication year=1845 | |publication year=1845 | ||
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|genus=Cheiroglossa | |genus=Cheiroglossa | ||
|species=Cheiroglossa palmata | |species=Cheiroglossa palmata | ||
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Latest revision as of 20:23, 5 November 2020
Roots tan, to 15 per plant, 1–1.5 mm diam., proliferating in humus or underneath palm leaf bases. Stems 0.5–1.5 cm, covered near apex with dense tuft of white to light brown, multicellular hairs to 7 mm. Trophophore blades green, shiny, to 45 × 30 cm, proximal margins diverging 90°–150° from stalk, with up to 7 rounded to mostly linear, acute lobes; venation complex-reticulate, very coarse, veinlets included in (usually elongate) very large major areoles to 35 × 8 mm, veinlets free or sometimes forming individual secondary areoles; blades firm, herbaceous. Trophophore stalk well defined, 1–2.5 times as long as trophophore blade. Sporophores single and central only on youngest or smallest leaves, normally to 10 per leaf, arising closely spaced from both sides of base of trophophore blade and top of stalk, sporangial clusters 1–7cm × 2.5–3 mm, apiculum absent.
Habitat: Evergreen. Among leaf bases on palmetto trunks [Sabal palmetto (Walter) Loddiges ex Schultes & Schultes f.], mainly in hammocks and swamps
Elevation: 0–50 m
Distribution
Fla., Mexico, West Indies, Central America, South America, disjunct in Asia in s Vietnam, Africa in Madagascar, Seychelles, and Réunion.
Discussion
This very remarkable plant is becoming extremely rare in Florida.
Selected References
None.
Lower Taxa
None.