pinnate

(redirected from bipinnate)
Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.
Related to bipinnate: bipinnate leaf, Bipinnate muscles

pinnate

(pĭn′āt′)
adj.
Resembling a feather in having parts or branches arranged on each side of a common axis: pinnate leaves; pinnate gills.

pin′nate′ly adv.

pinnate

(of compound leaves) made up of leaflets arranged in two rows on opposite sides of the axis, or RACHIS.

pinnate

featherlike; said of a muscle in which the fibers lie at angles to its tendon. The fibers may be unipinnate, bipinnate, etc.
References in periodicals archive ?
4 and 5 show remarkable variability in proximal-pinnule morphology in a 30-cm long specimen to suggest that it originated from the distal part of the bipinnate frond where morphology changes very rapidly.
1) the frond is bipinnate which differs from all other dichotomizing medullosalean fronds that are, by contrast, tripinnate
minutum the general slimmer appearance, the narrower leaf blades which are canaliculate and distinctly narrowed toward the base, and the usually bipinnate and apically substellate inflorescence.
5-3 cm wide; inflorescence usually bipinnate to inconspicuously tripinate, substellate at the apex, basal fascicles 2- to 4-flowered.
5 times of their length; inflorescence bipinnate, stellate at the apex; petal apex totally white.
Inflorescence bipinnate except for the simple extreme apex, capitate, erect, ca.
term correct application anterior applicable only in strongly zygomorphic flowers, but even there it remains doubtful posterior see anterior pinnate description of compound leaves with leaflets arranged on opposite sides of an elongated axis or of a certain venation pattern bipinnate twice pinnate (leaves), see above tripinnate pinnately compound three times, with pinnate pirmules (leaflets) quadripinnate pinnately compound four times, with nate pinnules (leaflets) scape leafless peduncle arising from ground level (usually from a basal rosette) in acaulescent plants (e.
Inflorescence paniculate, bipinnate, 74-96 cm long (including the terminal branch), 60-75 cm in diameter, erect, rachis stout, red; primary bracts resembling the upper scape bracts but smaller, shorter than the sterile bases of the branches; branches 11 to 13 in number (including the terminal one), the lateral branches 30-36 cm long (basal ones) to 20-26 cm long (upper ones), suberect-spreading, densely flowered in early anthesis to subdensely to laxly flowered afterwards, 5 (upper ones)- to 11 (basal ones)-flowered, rachis geniculate, subterete to slightly angulose, 1-2 x 0.
Inflorescence ovoid, bipinnate in its basal 2/3 and simple at its apical 1/3, much shorter than the leaves, erect, ca.
bipinnate at base), floral bracts resembling the leaves (vs.
Inflorescence distincly bipinnate, many flowered; primary bracts foliaceous; fascicles the basal ones 3 to 4-flowered, flabellate, slightly complanate, 18-20 x 10-11 mm (excluding the petals), basal peduncle ca.