Primary vein category of leaflets pinnate
and simple with
Synapomorphies for the redefined Lomariopsidaceae are: creeping rhizomes; dark rhizome scales; petioles with vascular bundles arranged in a U-shape; leaves simple to once pinnate
, the pinnae articulate to the rachis when present; spores bilateral and monolete.
trees with pinnate
leaves and 3-locular fruit with many seeds lacking
cataphylls; eophyll bifid or pinnate
and acute at apex; proximal
For example, seedlings with single cataphylls can be associated with entire eophylls, and seedlings with more than one cataphyll generally have bifid, palmate, or pinnate
Webbing accompanied by overtopping, as described above, led to a leaf with pinnate
basal, lateral primaries (or basal secondaries in pinnate
Number of agrophic veins present on each side of lamina: (0) absent; (1) 1; (2) 2; (3) 4; (4) 5 or 6; (5) N/A, true pinnate
The leaves are 4-6 m long, with spines on the petiole, and pinnate
, with about 150 leaflets; the leaflets are 30 cm long and 2 cm wide.
DC is a biennial herb with a branched stem rising 30-120 cm, leaves are finely divided, twice or thrice pinnate
with upper leaves reduced in size; stems are rough with tiny hairs.
Modified basic patterns, such as subdendritic, pinnate
, recurved trellis, centripetal and so on, although usually recognized as belonging to one of the basic types, differ in certain regional characteristics (Howard 1967; DeBarry 2004, 98-100).
The shift in diversity took place abruptly, near the origin of pinnate
feathers in maniraptoran dinosaurs.