pinnule

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pinnule

a subdivision of a leaf pinna, often bearing SPORANGIA in ferns.
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More than 95% of this plant material comprises remains of medullosan pteridosperms, including trunks [less than or equal to] 95 mm in diameter that show resin rodlets and downward-recurved petioles, large bifurcating petioles [less than or equal to] 56 mm in diameter, and pinnae of Macroneuropteris scheuchzeri with cyclopterid pinnules, and Neuropteris ovata.
Pinnules entire or lobed, lateral lobes lanceolate; blades turning bronze in winter 5.
Numerous modified proximal pinnules occur at the base of the arms (Fig.
scheuchzeri bears large terminal pinnules that reach a length of over 6 cm, a width of 2.
The great variability in spines size and pinnules arrangement seems to be a common feature in the order Antipatharia; therefore, a large number of measures in several specimens from diverse localities, are necessary to verify the variability of a species character.
Rhizome elongated (internodes distinct), apex usually protruding more than 1 cm past leaves; pinnules near middle of blade dissected to midrib (pinnate); bulbletsabsent; leaf blades usually widest near middle C.
Acrossota is, however, unique among octocorals in lacking pinnules on the tentacles (Alderslade and McFadden, 2007), an apomorphy that is not shared with clavulariid sp.
This concerns stems which kept their cylindrical volume as well as compound leaves showing pinnules lying in different planes however no anatomical detail is preserved.
13) climbed by leaflet tendrils, developed from specialized apical portions of pinnae, in which one or several of the pinnules are variously modified into tendrils (Fig.
Figure 10 conveys a sense of the abundance of densely-occurring detached, fragmentary ultimate-alethopterid pinnae, and caducous linopterid pinnules that are associated with the medullosalean axes throughout the sample area.
Leaves glabrous or essentially so; pinnules entire or lobed only at base .