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:
Dryopteridaceae
Dryopteridaceae
Description:
Species Description - Rhizome short-creeping, 2-4 mm diam.; rhizome scales linear-lanceolate, dark brown, lustrous, entire, ca. 2 mm long; phyllopodia distinct to indistinct; fronds clumped, to 18 cm long, 0.5-3.0 cm wide; stipe 1/5-½ the frond length, with scales a mixture of spreading, lanceolate scales and reduced, appressed, substellate scales; blade narrowly elliptic, chartaceous, apex acute to acuminate, base cuneate; veins obscure, free, simple or once-forked, 0.6-1.0 mm apart, at 60-70° angle; hydathodes lacking; blade scales of upper surface lanceolate, deeply toothed, on lower surface substellate (stellate with some scale body); fertile fronds longer than the sterile and very long-stiped, stipe about 2/3 the length, blade narrower than that of the sterile frond (0.7-1.2 cm wide), scales on the abaxial midvein but not among the sporangia; spores with slender smooth crests.
Species Description - Rhizome short-creeping, 2-4 mm diam.; rhizome scales linear-lanceolate, dark brown, lustrous, entire, ca. 2 mm long; phyllopodia distinct to indistinct; fronds clumped, to 18 cm long, 0.5-3.0 cm wide; stipe 1/5-½ the frond length, with scales a mixture of spreading, lanceolate scales and reduced, appressed, substellate scales; blade narrowly elliptic, chartaceous, apex acute to acuminate, base cuneate; veins obscure, free, simple or once-forked, 0.6-1.0 mm apart, at 60-70° angle; hydathodes lacking; blade scales of upper surface lanceolate, deeply toothed, on lower surface substellate (stellate with some scale body); fertile fronds longer than the sterile and very long-stiped, stipe about 2/3 the length, blade narrower than that of the sterile frond (0.7-1.2 cm wide), scales on the abaxial midvein but not among the sporangia; spores with slender smooth crests.
Discussion:
Acrostichum pringlei Davenport, Bot. Gaz. (Crawfordsville) 21: 253. 1894. Type. Mexico. Oaxaca: Sierra de San Felipe, Pringle 5605 (GH!; isotypes GH!, K!, P!, US!). It is amazing to find so many collections from Oaxaca (and one from Michoacán) and none from other states. Elaphoglossum pringlei resembles E. muelleri but differs from it in having dark, lustrous rhizome scales and substellate abaxial blade scales, with at least a slight scale body.
Acrostichum pringlei Davenport, Bot. Gaz. (Crawfordsville) 21: 253. 1894. Type. Mexico. Oaxaca: Sierra de San Felipe, Pringle 5605 (GH!; isotypes GH!, K!, P!, US!). It is amazing to find so many collections from Oaxaca (and one from Michoacán) and none from other states. Elaphoglossum pringlei resembles E. muelleri but differs from it in having dark, lustrous rhizome scales and substellate abaxial blade scales, with at least a slight scale body.
Distribution:
Mexico North America|
Mexico North America|