bipinnate


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Related to bipinnate: bipinnate leaf, Bipinnate muscles

bipinnate

[bī′pin‚āt]
(botany)
Pertaining to a leaf that is pinnate for both its primary and secondary divisions.
References in periodicals archive ?
Roots black, wiry; fronds pinnate-pinnatifid to bipinnate; rachis grooved; pinnate monomorhic or dimorphic; sori absent; sporangia on modified fertile segments of blades or separate fronds.
The first form, the normal leaf, consists of true leaves that are bipinnate or occasionally tripinnate.
* leaves: simple, trifoliolate, palmate, pinnate, bipinnate or tripinnate.
Two fragments of small bipinnate fronds showing small "shrivelled" pinnules have been attributed to "Callipteris martinsi" by Doubinger and Kruseman (1965, Pl.
LEAF DESCRIPTION: COMPOUND, bipinnate or tripinnate, usually three leaflets per division.
Pedipalpal coxa 5 setae (including 2 on manducatory process), distal marginal seta of the disk (dps) 0.050-0.055 mm long, areolar insertions of disk setae dps-mpslps forming a 50-54[degrees] angle; coxa I 3 + 2 marginal microsetae, distal marginal seta (dcs) 0.035-0.040 mm long; II 4 + 6-7 bipinnate coxal spines, III 5 + 4 bipinnate coxal spines and IV 5; intercoxal tubercle bisetose.
Inflorescence bipinnate, cylindrical, erect, 6-15 cm long, fascicles laxly (toward the base) to densely (near the apex) arranged, 1-3.5 cm apart, bearing 4 to 6 fascicles densely aggregated at extreme apex, rachis ca.
Suggestions are offered as to how the many foliar forms fit into the bipinnate frond of Laveine and Brousmiche (1982).
LEAF DESCRIPTION: COMPOUND, 6" to 12" long, pinnate or bipinnate on same plant; leaflets 1" to 1 1/4" long, elliptic to oblong-lanceolate shape with sparsely serrulate margins.