pinnatisect


Also found in: Dictionary, Thesaurus.

pinnatisect

(of leaves) having a lamina that is PINNATIFID in shape but with lobes very deep cut, almost to the midrib.
References in periodicals archive ?
A combination of annual habit, pinnatifid or pinnatisect and auriculate cauline leaves, persistent sepals, and pedicels pubescent all around should readily distinguish the species from the other South American Lepidium.
Leaves alternate to rarely opposite, rosulate, clustered at the branch apices to clustered in the axils of the old leaves; petiolate, sessile to sheathing at the base; blades entire, lyrate, pinnatisect to pinnately compound, unarmed to spiny, pinnately, palmately to three-veined, rarely parallel-veined, glabrous to pubescent.
Leaves rosulate; sessile, petiolate to pseudopetiolate; blades linear-oblanceolate to orbicular, pinnately veined, margin entire to deeply pinnatisect, densely pubescent on both surfaces or only beneath.
Leaves rosulate; sessile to petiolate; blades linear to ovate, pinnately veined, margin entire to pinnatisect, glabrous to pubescent.
Basal leaves 10-15 (-25) cm long; laminas narrowly ovate, 70 x 30 to 150 x 45 (to 200 x 60) mm, pinnatisect (lower lobes generally free) with (6-) 9-12 (-14) lobes on each side; lobes narrowly ovate, up to 30 x 20 mm; lobe margins grossly serrate to pinnatifid to lobulate, with 5-8 serrations or lobules on each side; lobules up to 8 mm long, distal lobules usually recurved; adaxial leaf surface sparsely setose with stinging hairs 3-5 mm long and covered with scabrid trichomes up to 1 mm long; abaxial surface setose, very densely set with scabrid (up to 1 mm long) and glochidiate trichomes (up to 0.
Leaves imbricate; sessile, clasping; blades linear to obovate, entire, pinnatisect to reduced to three-parted spines, pinnately veined, margin entire, involute, pubescent.
Basal leaves petiolate, rosulate or not, simple, entire or dentate to pinnately lobed, reticulately veined; cauline leaves petiolate or sessile, sometimes auriculate to sagittate, entire or dentate, rarely pinnately lobed to pinnatisect.