With Terminology Glossary
Andrew G. Murdock, 2003
Updated by Joel H. Nitta, 2011
Key to major groups given first. Click on group name for key of species in each group.
|1||Sporangia borne singly in the axils of leaves or on upper surface of leaves||GROUP 1|
|Sporangia borne on underside of leaves or on leaf margins||2|
|2||Blades extremely thin (laminae usually only a single cell layer in thickness between veins); stomata absent||GROUP 2|
|Blades with laminae more than 3 cells thick; stomata present||3|
|3||Plants aquatic||Marsilea polycarpa|
|Plants not aquatic||4|
|4||Plants epiphytic, epipetric, or hemi-epiphytic||5|
|Plants terrestrial (including those with rhizomes in ground but leaves that clamber or climb over other vegetation as often observed in Group 5)||6|
|5||Leaves simple||GROUP 3|
|Leaves pinnatifid or more divided||GROUP 4|
|6||Leaves indeterminate; blades pseudodichotomously forked with a resting bud in each axil||GROUP 5|
|Leaves usually determinate; blades not pseudodichotomously forked||7|
|7||Leaves simple to 1-pinnate-pinnatifid||GROUP 6|
|Leaves 2-pinnate or more divided||GROUP 7|
Murdock, A. G. and A. R. Smith. 2002. Pteridophytes of Moorea, French Polynesia, with a new species, Tmesipteris gracilis. Pacific Science, 57 (3).
Copeland, E. B. 1932. Pteridophytes of the Society Islands. Bernice P. Bishop Museum Bulletin 93: 186.
Acropetal: occurring on the side of a pinna that is nearest the apex of the frond
Aerophore: an evanescent spot, swelling, or finger-like projection of thin-walled cells found along the stipe or in the pinna or pinnule axils of some ferns that apparently aids gas exchange with the atmosphere
Aristate: bearing a long, stiff, bristle-like apical prolongation of a midrib beyond the margin
Farina: a thick, powdery-appearing exudate of glands covering the lamina surface
Medial: (used to describe sorus position) borne midway between the costa or costule and the margin
Pedate: having the basal basiscopic portions of the basal pinnae more developed and divided than the other portions of the laminae
Sporophyll: in ferns, a frond bearing sporangia; in lycophytes, a scale-like microphyll subtending a sporangium
Superficial: (used to describe sorus position) on the surface of the lamina, rather than on the margin
Wing: (=ala) a long, narrow membrane laterally bordering a stipe, rachis, or costae
Some definitions adapted from:
Lellinger, David B. 2002. A Modern Multilingual Glossary for Taxonomic Pteridology. Pteridologia 3: 1–263.