familyPolypodiaceae
genusCampyloneurum
Difference between revisions of "Campyloneurum"
Tent. Pterid. 189. 1836.
Common names: Strap ferns
Etymology: Greek kampylos, curved, and neuron, nerve, in reference to the venation
Treatment appears in FNA Volume 2.
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| − | --><span class="statement" id="st- | + | --><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>epiphytic. <b>Stems</b> short- to long-creeping, branched, 2–10 mm diam., sometimes whitish pruinose; scales brown, ovate, often clathrate, entire. <b>Leaves</b> monomorphic, tufted, conspicuously narrowed to tip, to 150 cm. <b>Petiole</b> absent or present, articulate to stem. <b>Blade</b> linear to lanceolate or elliptic, simple, glabrous, sparsely scaly, margins entire; scales clathrate, basifixed. <b>Primary</b> veins connected by 1–several secondary veins (cross veins), forming 1–several areoles between each pair of primary veins, areoles with 1–4 excurrent veinlets, sometimes these excurrent veinlets dividing areoles completely. <b>Sori</b> in 1–10 rows between midrib and margin, terminal on included veinlets, discrete, round; indument absent. <b>Spores</b> verrucose to nearly psilate. <b>x</b> = 37.</span><!-- |
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Latest revision as of 20:24, 5 November 2020
Plants epiphytic. Stems short- to long-creeping, branched, 2–10 mm diam., sometimes whitish pruinose; scales brown, ovate, often clathrate, entire. Leaves monomorphic, tufted, conspicuously narrowed to tip, to 150 cm. Petiole absent or present, articulate to stem. Blade linear to lanceolate or elliptic, simple, glabrous, sparsely scaly, margins entire; scales clathrate, basifixed. Primary veins connected by 1–several secondary veins (cross veins), forming 1–several areoles between each pair of primary veins, areoles with 1–4 excurrent veinlets, sometimes these excurrent veinlets dividing areoles completely. Sori in 1–10 rows between midrib and margin, terminal on included veinlets, discrete, round; indument absent. Spores verrucose to nearly psilate. x = 37.
Distribution
Tropical, North America, Mexico, West Indies, Central America, South America.
Discussion
Species ca. 25–50 (4 in the flora).
Selected References
Lower Taxa
Key
| 1 | Primary veins obscure and slightly to strongly curved; blades generally less than 6 cm wide. | > 2 |
| 1 | Primary veins conspicuous and straight to slightly curved; blades generally more than 6 cm wide. | > 3 |
| 2 | Blades more than 2 cm wide, margins shallowly sinuate to undulate, not revolute; areoles in 4–8 series between costa and margin; petioles always present. | Campyloneurum costatum |
| 2 | Blades less than 2 cm wide, margins revolute, not shallowly sinuate to undulate; areoles in 1–4 series between costa and margin; petioles present or absent. | Campyloneurum angustifolium |
| 3 | Petioles absent to ca. 9 cm; blades yellow-green, margins entire and plane to lightly undulate. | Campyloneurum phyllitidis |
| 3 | Petioles 5–18 cm; blades dark green, margins undulate. | Campyloneurum latum |