OPHA clade, species that are native to the American continent and have one type of sporophyll in the form of a megaspore network.
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Unlike living " Isoetes ", " Tomiostrobus " formed closed cones with sporophylls that were distinctly shouldered and woody.
33.
"Zamia " sporophylls are born in vertical rows in cones, and the megasporophyll apices are faceted or flattened, not spinose.
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The male cones are solitary, ovoid, 30 cm long and 7.5 cm broad, with an apical spine and rhomboid sporophyll face.
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One subfamily, the Encephalartoideae, is characterized by spirally arranged sporophylls ( rather than spirally orthostichous ), non-articulate leaflets and persistent leaf bases.
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In " Selaginella ", each microphyll and sporophyll has a small scale-like outgrowth called a ligule at the base of the upper surface.
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The male cones are solitary, narrow ovoid, 13 17 cm long and 7 9 cm diameter, brown, the sporophylls 33 40 mm long with an apical spine.
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The female cones are open, with sporophylls 7 cm long and 3.5 5 cm wide, and dense grey to orange tomentose, with 6-9 ovules per sporophyll.
39.
The female cones are open, with sporophylls 7 cm long and 3.5 5 cm wide, and dense grey to orange tomentose, with 6-9 ovules per sporophyll.
40.
CoastKeeper is collecting kelp sporophylls, the reproductive blades of the plant, and transporting them to the Southern California Marine Institute at the Port of L . A .'s Terminal Island.
