| Home | > | List of families | > | Pteridaceae | > | Pityrogramma | > | rupicola |
| Synonyms: | |
| Common names: | |
| Frequency: | |
| Status: | |
| Description: |
Rhizome shortly creeping, horizontal, densely set with scales; rhizome scales narrowly linear-lanceolate in outline and more or less curved, base concave-adnate, margin minutely and irregularly wavy, apical cell often terminated by 2-3 overlapping cylindrical cells, 3-4.2 cm x 0.25-0.5mm. Fronds numerous, closely spaced, 6-18 (35) cm, erect or ± scrambling, firmly membranous or subcoriaceous. Stipe coming out from the rhizome at an almost right angle, slender, 4-12 cm long, 0.6-0.9 mm in diameter at the base, filamentous above, almost capillary above, flexuous, glistening, golden-powdery when young, soon glabrous, basal scales similar to the rhizome-scales but a little smaller. Lamina deltate to elongate-deltate in outline, 2.5-6 × 2-5 cm, 3-pinnatifid at the base, apex pinnatifid, with golden powder on the lower surface, glabrous on the upper surface; pinnae deltoid, inequilateral more or less horizontal; pinnules basiscopic larger, 4-7 on both sides, the upper ones close to the lower ones separated by a distance of 7-20 mm, margin flattened, lobes rounded intact; rhachis from the middle to the apex gradually winged, densely set with golden powder; stipules in the lowest pinnae up to 4 mm long, winged, gradually decreasing towards the apex and with a wider wing; veins and venules above flat, below prominent, reaching apex of lobes. Sporangia occupy the whole length of the venules, except the upper part. |
| Notes: | Differs from other species by habit of the plant, nature of rhizome, shape and size of rhizome scales, shape, lenght and subdivision of the lamina. |
| Derivation of specific name: | |
| Habitat: | Rock surfaces and crevices. |
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| Worldwide distribution: | Burundi, DRC, Rwanda. |
| Growth form(s): | Lithophyte. |
| Endemic status: | |
| Red data list status: | |
| Insects associated with this species: | |
| Spot characters: | Display spot characters for this species |
| Literature: |
Fisher E. & Lobin W. (2024). Checklist of Lycopodiopsida (clubmosses and quillworts) and Polypodiopsida (ferns) of Rwanda. Willdenowia 53(3) Page 164. Pichi Sermolli, R.E.G. (1972). Fragmenta Pteridologiae III Webbia 27(2) Pages 425 - 428. (Includes a picture). Roux, J.P. (2009). Synopsis of the Lycopodiophyta and Pteridophyta of Africa, Madagascar and neighbouring islands Page 178. |
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