pteridophytes spot ID Flashcards
Lycopodiaceae
Lycopodium annotinum, Lycopodium clavatum, Lycopodium complanatum, Lycopodium obscurum
Lycopodium annotinum
stiff clubmoss,
- bottlebrush-like
- stalkless, single strobilus
Lycopodium clavatum
running clubmoss
- hairs at leaf apices
- multiple stalked strobili
Lycopodium complanatum
groundcedar
- flattened, cedar-like leaves
- forked stalks
- coral-like
Lycopodium obscurum
Ground pine
- busy, tree like branches
- multiple stalkless strobili
Equisetaceae
Equisetum arvense, Equisetum pratense, Equisetum sylvaticum, Equisetum hyemale
Equisetum arvense
Equisetaceae, common horsetail
- first internode on branch longer than stem sheath
- unbranched branches
Equisetum pratense
Equisetaceae, meadow horsetail
- first internode shorter than sheath
- white edging on sheath teeth
Equisetum sylvaticum
Equisetaceae, woodland horsetail
- 2x branched branches
Equisetum hyemale
Equisetaceae, rough horsetail
- no branches
- terminal strobili
Polypodiaceae
fern family: Athyrium filix-feminia, Dryopteris carthusiana, Gymnocarpium dryopteris, pteridium aquilinum, matteuccia struthiopteris
Athyrium filix-femina
Polypodiaceae, lady fern
- 1st pinna downwards
- lance-shaped fronds
- kidney-shaped indusium
Dryopteris carthusiana
Polypodiaceae, wood fern
- asymmetrical pinna
- alternate arrangement of pinna
- kidney shaped indusium
Gymnocarpium dryopteris
Polypodiaceae, oak fern
- triangular pinna and fronds
- no indusium
Pteridium aquilinum
Polypodiaceae, bracken fern
- triangular fronds
- revolute (rolled inward) margins
