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 compact, short- to moderately creeping, 3–5 mm diam.; rhizome scales linear-lanceolate, orange-tan to dark brown, 2–3(–5) mm long, entire, margins inrolled, the cells isodiametric and distinctly concave, appearing subclathrate; fronds approximate to slightly spaced, 15–40(–65) x 15–20(–32) cm; phyllopodia distinct, ca. 1 cm long; stipes (1/5–)1/4–1/3(–2/5) the frond length, glabrous above the phyllopodia; blades narrowly elliptic, firm, narrowly cuneate at bases, long-acuminate at apices; veins scarcely visible, free, simple or once-forked, ca. 0.8 mm apart, at 60–65º angle to costa; hydathodes absent; adaxial blade surfaces glabrous; abaxial blade surfaces with scattered to sparse, minute, stellate trichomidia and occasional black scales on costal bases; fertile fronds nearly as long as, to somewhat shorter than, the sterile and about the same shape and width, stipe 1/2–3/5 the frond length, intersporangial scales absent.
Species Description - Rhizomes compact, short- to moderately creeping, 3–5 mm diam.; rhizome scales linear-lanceolate, orange-tan to dark brown, 2–3(–5) mm long, entire, margins inrolled, the cells isodiametric and distinctly concave, appearing subclathrate; fronds approximate to slightly spaced, 15–40(–65) x 15–20(–32) cm; phyllopodia distinct, ca. 1 cm long; stipes (1/5–)1/4–1/3(–2/5) the frond length, glabrous above the phyllopodia; blades narrowly elliptic, firm, narrowly cuneate at bases, long-acuminate at apices; veins scarcely visible, free, simple or once-forked, ca. 0.8 mm apart, at 60–65º angle to costa; hydathodes absent; adaxial blade surfaces glabrous; abaxial blade surfaces with scattered to sparse, minute, stellate trichomidia and occasional black scales on costal bases; fertile fronds nearly as long as, to somewhat shorter than, the sterile and about the same shape and width, stipe 1/2–3/5 the frond length, intersporangial scales absent.
Discussion:
Acrostichum viride E. Fourn., Mexic. Pl. 1: 66. 1872. Type. Mexico. Veracruz: Jalapa, Hacienda de las A´ nimas, Hahn 455 (P! p.p., frag. NY!).
Elaphoglossum viride closely resembles E. sartorii, but the former is distinct by the inrolled rhizome scales with isodiametric concave cells.
Distribution:
Mexico North America|
Mexico North America|