The ferns of Britain, and their allies. Comprising Equisetaceae, Filicaceae, Lycopodiaceae, marsileaceae. Forming the fourth volume of Florigraphia Britannica / by Richard Deakin.

  • Deakin, Richard, 1808-1873.
Date:
1848
Catalogue details

Licence: Public Domain Mark

Credit: The ferns of Britain, and their allies. Comprising Equisetaceae, Filicaceae, Lycopodiaceae, marsileaceae. Forming the fourth volume of Florigraphia Britannica / by Richard Deakin. Source: Wellcome Collection.

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    5. Woodsia, [page 45.] Sori circular, loose clusters, scat- tered. Indusium cut into numerous mostly capillary segments. Fronds flat, the lateral veins not anasto- mozing. 6. Allo’sorus, [page 47.] Sori circular clusters, becoming confluent and concealed by the revolute margin of the frond; the lateral veins not anastomozing. Family 4. Adiantace^:. Thecce in linear or oblong clusters (sori), covered by a marginal or sub-mar- ginal elongated portion of the frond on its superior cuticle in the form of an indusium. 7. Adian’tum, [page 49 ] Sori oblong or roundish, covered by a portion of the frond reflexed, and a prolonged portion of its membranous margin forming an indusium, opening interiorly. 8. Loma’ria, [page 51.] Sori a continuous line on each side of the mid-rib, covered by a continuous indusium, the lateral veins not extending beyond the indusium. 9. Pteris, [page 52.] Sori continuous leanear, marginal, covered by a continuous marginal indusium. Family 5. Aspleniace^e. Thecce in elongate clusters; sori covered by an indusium. 10. Asplenium, [page 57.] Sori oblong or linear. Indu- sium of the same shape, arising from the lateral veins, and opening on one side longitudinally towards the mid-rib. 11. Scolopendrium, (page 78.] Sori linear, transverse on lateral veins, always double. Indusium appearing single from both opening on the inner edge and attached on the outer. 12. Ceterach, [page 81.] Sori oblong or linear, clusters, scattered. Indusium obsolete, lateral veins anastomozing. Family 6. Aspidiace^e. Theca, in circular clusters (sori) covered by an indusium. 13. Cystop’teris, [page 84.] Sori roundish clusters. In- dusium inserted by a broad base, with the thecae, to