Claim · model-written summary
A. glabra has little mixed stele tissue versus much in A. grayi.
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentSettingValueQualifier
Verbatim
e0“the presence of a small amount of mixed tissue in the stele of A. glabra , compared to a large amount in A. grayi”
Title
STUDIES OF PALEOZOIC FERNS. THE MORPHOLOGY, ANATOMY, AND TAXONOMY OF ANKYROPTERIS GLABRA
Donald A. Eggert American Journal of Botany 1959. doi:10.1002/j.1537-2197.1959.tb07043.x
Other claims from this paper (5)
- Association Four specimens assigned to A. glabra show size-correlated plasticity of features.
- Observation A. glabra has more distantly spaced nodes than A. grayi.
- Observation Preserved axillary branches had morphology typical of the parent stem.
- Observation Several orders of axillary branching may occur in the American material.
- Mechanism Successive branch orders diminish and simplify, interpreted as determinate cauline growth.