Description:
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Rhizomes erect, covered with scales; rhizome scales ovate-lanceolate in outline, apex elongate, margins entire, 3.2–5.46 × 0.92–1.57 mm, widest in lower third, the cells in the center becoming darker to the middle and have thicker walls, maroon-colored. Fronds monomorphic, spaced. Stipes (14–)26–32(–35.7) cm, furrowed, greenish when young, becoming pale brown with age, sparsely covered with scales, scales in the lower part similar to those from the rhizome, towards the rachis lanceolate, 2.73 × 0.53–0.7 mm, at their base with maroon-colored appendages, 0.27–0.76 × 0.04–0.06 mm. Lamina 1-pinnate, 1-pinnatifid, lanceolate in outline, (31–)35–62 × 10.4–14.5 cm, with (1–)19–22 pairs of pinnae; pinnae opposite to subopposite, alternate towards the apex, lanceolate in outline, 6.1–8.2(–10) × (1.8)2.1– 3.1(–3.9) cm, the lowermost slightly smaller, tapering towards the apex, proliferous at the base of terminal pinna. Pinnae with the basic acroscopic pinnule ovate, enlarged, totally separated from the secondary rachis, towards the apex pinnules incised from 30–60%, (1.2–)1.4–2.2(–2.5) × 0.6–1.3 mm. Rhachis pale brown, greenish towards apex, sparsely covered with scales; scales lanceolate, 1.74–1.89 × 0.26–0.34 mm, at the base with appendages 0.27–0.76 × 0.04–0.06 mm, cells elongate, rather uniform. Sori (6–)8–11(–12) per pinnae, linear, located on acroscopic vein of pinnae lobes, 4.5 × 0.33 mm; indusia linear, 5.2–5.75(–7.02) × 0.35–0.75 mm, transparent. |
| Literature:
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Fisher E. & Lobin W. (2024). Checklist of Lycopodiopsida (clubmosses and quillworts) and Polypodiopsida (ferns) of Rwanda. Willdenowia 53(3) Page 158.
Fisher, E. & Lobin, W. (2023). Synoptic Revision of Aspleniaceae (Asplenium, Hymenasplenium) of Rwanda. Phytotaxa 608 (1) Page 50. (Includes a picture).
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