Taxon Details: Elaphoglossum andreanum Christ
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Narratives:
Family:
Dryopteridaceae (Pteridophyta)
Dryopteridaceae (Pteridophyta)
Scientific Name:
Elaphoglossum andreanum Christ
Elaphoglossum andreanum Christ
Primary Citation:
Monogr. Elaphoglossum 100, f. 80. 1899
Monogr. Elaphoglossum 100, f. 80. 1899
Accepted Name:
This name is currently accepted.
This name is currently accepted.
Description:
by: A. Vasco, R.C. Moran, and J.T. MIckel
Type: Colombia. Nariño: Cordillera Oriental, Alto del Tábano in Andibus Pastoensibus, [1º48’S, 78º35’W], 3200 m, 4 Mar 1876, E. André 3114 (holotype, P not seen, photos GH, NY; isotypes, B!, GH!, NY!).
Description: Rhizome 1 mm wide; rhizome scales 3–5 mm long, lanceolate, appressed, dull, tan, concolorous or with dark point of attachment, entire; sterile leaves 2.6–9.5 cm long; petioles 0.5-0.9 times the sterile leaf length, tan, scales 1.5-3 mm long, concolorous, scattered, lanceolate, tan, concolorous or with black point of attachment; laminae 1–3.5 × 0.6–2.0 cm, 1.1–2.1 times longer than wide, slightly elongate-deltate or rarely narrowly rhombic, coriaceous, apices rounded, bases truncate, margins minutely crenulate, rarely (in small specimens) entire; abaxial surface with scales (0.2-)0.7–1.5 mm long, tan (sometimes black at point of attachment) to dark brown or black, ovate to lanceolate, often hastate at the base, sometimes with lateral processes as long as the length of the scale, sometimes the scales reduced to ca. 0.2 mm long and circular or stellate; adaxial surface scales 0.5–1.5 mm long, usually tan to dark brown or black, ovate to lanceolate, often hastate at the base and sometimes with lateral processes as long as the length of the scale; fertile leaves 2.7-7.5 cm long; petioles 2-3 times longer than the lamina; laminae 0.9-2.3 × 0.7-1.9 cm wide, ovate to slightly oblong, entire, apices broadly acute to rounded, bases slightly cordate to truncate or broadly cuneate; intersporangial scales 0.5-2 mm long, tan to dark brown or black.
Distribution: Colombia, Ecuador; 2800–3700 m.
Comments: Elaphoglossum andreanum is characterized by small leaves and slightly elongate-deltate laminae with minutely crenulate margins. It occurs at higher elevations compared to most other species of sect. Squamipedia. It resembles E. concinnum, but that species differs by more elliptic or rhombic leaves, broadly obtuse lamina apices, and occurrence at lower elevations (2450-3000 m). Also similar is E. squamipes, which differs by laminae 1.8–2.5(–4) times longer than wide, lanceolate or elliptic and entire (rarely minutely crenulate, and only in small leaves). See E. anthracinum, E. blepharis, E. bryogenes, E. rhomboideum, and E. squamipes for comparisons to those species.
by: A. Vasco, R.C. Moran, and J.T. MIckel
Type: Colombia. Nariño: Cordillera Oriental, Alto del Tábano in Andibus Pastoensibus, [1º48’S, 78º35’W], 3200 m, 4 Mar 1876, E. André 3114 (holotype, P not seen, photos GH, NY; isotypes, B!, GH!, NY!).
Description: Rhizome 1 mm wide; rhizome scales 3–5 mm long, lanceolate, appressed, dull, tan, concolorous or with dark point of attachment, entire; sterile leaves 2.6–9.5 cm long; petioles 0.5-0.9 times the sterile leaf length, tan, scales 1.5-3 mm long, concolorous, scattered, lanceolate, tan, concolorous or with black point of attachment; laminae 1–3.5 × 0.6–2.0 cm, 1.1–2.1 times longer than wide, slightly elongate-deltate or rarely narrowly rhombic, coriaceous, apices rounded, bases truncate, margins minutely crenulate, rarely (in small specimens) entire; abaxial surface with scales (0.2-)0.7–1.5 mm long, tan (sometimes black at point of attachment) to dark brown or black, ovate to lanceolate, often hastate at the base, sometimes with lateral processes as long as the length of the scale, sometimes the scales reduced to ca. 0.2 mm long and circular or stellate; adaxial surface scales 0.5–1.5 mm long, usually tan to dark brown or black, ovate to lanceolate, often hastate at the base and sometimes with lateral processes as long as the length of the scale; fertile leaves 2.7-7.5 cm long; petioles 2-3 times longer than the lamina; laminae 0.9-2.3 × 0.7-1.9 cm wide, ovate to slightly oblong, entire, apices broadly acute to rounded, bases slightly cordate to truncate or broadly cuneate; intersporangial scales 0.5-2 mm long, tan to dark brown or black.
Distribution: Colombia, Ecuador; 2800–3700 m.
Comments: Elaphoglossum andreanum is characterized by small leaves and slightly elongate-deltate laminae with minutely crenulate margins. It occurs at higher elevations compared to most other species of sect. Squamipedia. It resembles E. concinnum, but that species differs by more elliptic or rhombic leaves, broadly obtuse lamina apices, and occurrence at lower elevations (2450-3000 m). Also similar is E. squamipes, which differs by laminae 1.8–2.5(–4) times longer than wide, lanceolate or elliptic and entire (rarely minutely crenulate, and only in small leaves). See E. anthracinum, E. blepharis, E. bryogenes, E. rhomboideum, and E. squamipes for comparisons to those species.
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