Monographs Details:
Authority:
Mickel, John T. & Smith, Alan R. 2004. The pteridophytes of Mexico. Mem. New York Bot. Gard. 88: 1-1054.
Mickel, John T. & Smith, Alan R. 2004. The pteridophytes of Mexico. Mem. New York Bot. Gard. 88: 1-1054.
Family:
Dryopteridaceae
Dryopteridaceae
Description:
Species Description - Rhizomes short-creeping, compact, horizontal, 2–4 mm diam.; rhizome scales linear-lanceolate, dark brown, lustrous, entire, ca. 2 mm long; fronds clumped, to 18 x 0.5–3 cm; phyllopodia distinct to indistinct; stipes 1/5–1/2 the frond length, with scales both spreading, lanceolate and reduced, appressed, substellate; blades narrowly elliptic, chartaceous, bases cuneate, apices acute to acuminate; veins obscure, free, simple or onceforked, 0.6–1 mm apart, at 60–70ºangle to costa; hydathodes absent; blade scales of adaxial surfaces lanceolate, deeply toothed, on abaxial surface substellate (stellate with some scale body); fertile fronds longer than the sterile and very long-stiped, stipes about 2/3 the frond length, blades narrower than those of sterile fronds, 0.7–1.2 cm wide, scales on the abaxial costae but not among the sporangia.
Species Description - Rhizomes short-creeping, compact, horizontal, 2–4 mm diam.; rhizome scales linear-lanceolate, dark brown, lustrous, entire, ca. 2 mm long; fronds clumped, to 18 x 0.5–3 cm; phyllopodia distinct to indistinct; stipes 1/5–1/2 the frond length, with scales both spreading, lanceolate and reduced, appressed, substellate; blades narrowly elliptic, chartaceous, bases cuneate, apices acute to acuminate; veins obscure, free, simple or onceforked, 0.6–1 mm apart, at 60–70ºangle to costa; hydathodes absent; blade scales of adaxial surfaces lanceolate, deeply toothed, on abaxial surface substellate (stellate with some scale body); fertile fronds longer than the sterile and very long-stiped, stipes about 2/3 the frond length, blades narrower than those of sterile fronds, 0.7–1.2 cm wide, scales on the abaxial costae but not among the sporangia.
Discussion:
Acrostichum pringlei Davenp., Bot. Gaz. 21: 253. 1894. Type. Mexico. Oaxaca: Sierra de San Felipe, Pringle 5605 (GH!; isotypes GH!-2 sheets, K!, MEXU!, P!, US!).
Unverified, Doubtful, or Mistaken Reports. Mich (reported by Mickel & Beitel, but specimens redetermined as E. rzedowskii). It is surprising to find so many collections from Oaxaca and none from other states. Elaphoglossum pringlei resembles E. muelleri but differs in having dark, lustrous rhizome scales and substellate abaxial blade scales, with at least a narrow scale body. Elaphoglossum pringlei is closely allied with E. petiolatum in its entire rhizome scales and blade size and shape, but there are no resin dots on the blades and the scales are substellate abaxially.
Distribution:
Mexico North America|
Mexico North America|