Monographs Details:
Authority:
Mickel, John T. & Beitel, Joseph M. 1988. Pteridophyte Flora of Oaxaca, Mexico. Mem. New York Bot. Gard. 46: 1-580.
Mickel, John T. & Beitel, Joseph M. 1988. Pteridophyte Flora of Oaxaca, Mexico. Mem. New York Bot. Gard. 46: 1-580.
Family:
Thelypteridaceae
Thelypteridaceae
Description:
Species Description - Rhizome short- to long-creeping; fronds to 2 m long or more, somewhat dimorphous, the fertile ones with longer stipes; lamina 0.5-1.2 m long, 20-60 cm wide; pinnae to 20+ pairs, widest at or near base, to ca. 30 cm long, 2-5 cm wide, at the base unequally rounded or broadly cuneate, the margins entire, wavy, or slightly cre-nate; buds occasionally borne in the axils of proximal pinnae; veins meniscioid, the secondary veins straight to usually arcuate or subsigmoid, with 12 or more pairs anastomosing and giving rise to excurrent veinlets, the areoles thus formed shorter than broad; costae, costules and sometimes veins below sparsely pubescent, the hairs mostly 0.3 mm long or less; sori arcuate along veins at the anastomoses; n = 72.
Species Description - Rhizome short- to long-creeping; fronds to 2 m long or more, somewhat dimorphous, the fertile ones with longer stipes; lamina 0.5-1.2 m long, 20-60 cm wide; pinnae to 20+ pairs, widest at or near base, to ca. 30 cm long, 2-5 cm wide, at the base unequally rounded or broadly cuneate, the margins entire, wavy, or slightly cre-nate; buds occasionally borne in the axils of proximal pinnae; veins meniscioid, the secondary veins straight to usually arcuate or subsigmoid, with 12 or more pairs anastomosing and giving rise to excurrent veinlets, the areoles thus formed shorter than broad; costae, costules and sometimes veins below sparsely pubescent, the hairs mostly 0.3 mm long or less; sori arcuate along veins at the anastomoses; n = 72.
Discussion:
Polypodium reticulatum Linnaeus, Syst. nat. ed. 10, 2: 1325. 1759. Meniscium reticulatum (Linnaeus) Swartz, J. Bot. (Schrader) 1801(2): 274. 1803. Dryopteris reticulata (Linnaeus) Urban, Symb. antill. 4:22. 1903. Type. LINN 1251.25, from an unknown locality, possibly Jamaica (Proctor, Fl. L. Antill. 2: 309. 1977). Thelypteris reticulata differs from T. serrata by the usually entire or slightly crenate pinnae. From T. falcata it differs by the areoles being shorter than wide and the curving secondary (cross) veins. The collections cited are not typical of the species. They have narrower pinnae and vary toward large forms of T. angustifolia (Will-denow) Proctor. However, that species generally has still narrower pinnae that are cuneate at the base.
Polypodium reticulatum Linnaeus, Syst. nat. ed. 10, 2: 1325. 1759. Meniscium reticulatum (Linnaeus) Swartz, J. Bot. (Schrader) 1801(2): 274. 1803. Dryopteris reticulata (Linnaeus) Urban, Symb. antill. 4:22. 1903. Type. LINN 1251.25, from an unknown locality, possibly Jamaica (Proctor, Fl. L. Antill. 2: 309. 1977). Thelypteris reticulata differs from T. serrata by the usually entire or slightly crenate pinnae. From T. falcata it differs by the areoles being shorter than wide and the curving secondary (cross) veins. The collections cited are not typical of the species. They have narrower pinnae and vary toward large forms of T. angustifolia (Will-denow) Proctor. However, that species generally has still narrower pinnae that are cuneate at the base.
Distribution:
Mexico North America| Colombia South America| Venezuela South America| Trinidad and Tobago South America| West Indies| Panama Central America| Guatemala Central America|
Mexico North America| Colombia South America| Venezuela South America| Trinidad and Tobago South America| West Indies| Panama Central America| Guatemala Central America|