Difference between revisions of "Thelypteris tetragona"
Ferns S. E. States 256. 1938.
FNA>Volume Importer |
FNA>Volume Importer |
||
Line 15: | Line 15: | ||
|name=Dryopteris tetragona | |name=Dryopteris tetragona | ||
|authority=(Swartz) Urban | |authority=(Swartz) Urban | ||
− | }}{{Treatment/ID/Synonym | + | }} {{Treatment/ID/Synonym |
|name=Goniopteris tetragona | |name=Goniopteris tetragona | ||
|authority=(Swartz) C. Presl | |authority=(Swartz) C. Presl | ||
Line 54: | Line 54: | ||
|publication year=1938 | |publication year=1938 | ||
|special status= | |special status= | ||
− | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/ | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V2/V2_395.xml |
|genus=Thelypteris | |genus=Thelypteris | ||
|subgenus=Thelypteris subg. Goniopteris | |subgenus=Thelypteris subg. Goniopteris |
Revision as of 16:47, 18 September 2019
Stems short-creeping, 3–5 mm diam. Leaves somewhat dimorphic, evergreen, somewhat spaced, fertile leaves long-petioled, more erect, and with more contracted pinnae, to ca. 1.1 m. Petiole straw-colored, to 60 cm × 2–5 mm, at base sparsely set with brown, lanceolate, stellate-hairy scales. Blade 30–45(–55) × 15–25 cm, broadest at base, with apical pinna similar to lateral pinnae. Pinnae 6–8(–12) pairs, 7–15(–18) × 2–3 cm (fertile 1–2 cm), incised 1/2–3/4 of width; segments 3–5 mm wide, rounded at apex; veins 6–10 pairs, proximal pair from adjacent segments united at obtuse angle below sinus with excurrent vein ca. 0.5–1 mm to sinus. Indument abaxially of mostly needlelike hairs 0.1–0.3 mm on costae and veins, blade tissue glabrous on both sides. Sori round, medial to supramedial; indusia lacking; sporangia with numerous hairs 0.1 mm. 2n = 144.
Habitat: Damp woods
Elevation: 0–50 m
Distribution
Fla., Mexico, West Indies in the Antilles, Central America to Panama, n South America.
Discussion
Selected References
None.