sagittate


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Related to sagittate: Sagittarius

sagittate

(săj′ĭ-tāt′)
adj. Biology
Having the shape of an arrowhead: sagittate leaves; sagittate shells.
References in periodicals archive ?
When you look at a plant that is described as having sagittate leaves, you can see the arrowhead shape.
Basal leaves absent; cauline leaves long-petiolate (petiole 1-7 cm long) or rarely uppermost auriculate or sagittate at base, coarsely dentate to pinnately lobed.
4 mm, stamens exceeding the petals by a fraction of the anthers, filaments subcomplanate, not at all delated toward the apex, pale yellow, adnate to the petals for 3-4 mm, anthers linear, 7-10 mm long, base sagittate and apex obtuse, fixed near the base, pollen oblong-elliptic, sulcate, exine reticulate, lumina subrounded, muri narrowed, style exceeding the petals for ca.
29 mm; anthers linear, 8-9 mm long, dorsifixed for % of its length above the base, base sagittate, apex apiculate, slightly recurved; pollen globose, biporate, exine appearing insulate??
8 mm long, equaling to slightly exceeded by the pistil, anthers sagittate; stigma simple-erect; mature fruits and seeds unknown.
2 mm long, base distinctly sagittate, apex acute, strongly recurved toward the apex, fixed at base, adnate to each other at base and free toward the apex, forming a stellate structure well visible at the apex of corolla, ca.
24 mm; stamens completely exposed by the recurved petals at anthesis, radially disposed; filaments terete, white, the antesepalous ones free, the antepetalous ones shortly adnate to the petals; Anthers linear, 13-15 mm long, base sagittate, apex obtuse, fixed near the base, slightly shorter than the petals; Pollen narrowly ellipsoid, sulcate, exine reticulate, lumina rounded, muri slightly thickened; style exceeding the petals, white; stigma conduplicate, blades spreading-contorted, densely papillose, white, ca.
22 x 2 mm appendages adnate to the petals for 18-19 mm, (the distal margins free, the proximal margins adnate to petals for 18-19 mm), the free lobes ovate, 3-4 mm long, apex slightly recurved; stamens completely exposed by the recurved petals at anthesis, suberect; filaments terete, white, the antesepalous ones free, the antepetalous ones shortly adnate to the petals; anthers linear, 7-8 mm long, base sagittate, apex obtuse, fixed near the base, shorter than the petals; pollen narrowly ellipsoid, sulcate, exine broadly reticulate, lumina rounded, muri narrowed; style exceeding the petals, white; stigma conduplicate, blades subspreading, densely papillose, white, ca.
0,7 mm wide, flattened, not thickened towards the apex, yellowish; anthers linear, subdorsifixed, slightly sagittate, with a thick green connective and dark brown to blackish thecae, pollen yellow; ovary conical, the lower 1/3 (= nectary tissue) sunk into the receptacle, yellowish, nectary tissue orange, the superior part 7 mm long; ovules white, the flat chalazal appendage about half as long as the ovule proper; style ca.
12 mm, the antesepalous ones free; anthers sublinear, 5-6 mm long, base sagittate, apex obtuse and bearing an conspicuous bifid- caudate, hooklike apiculous, dorsifixed at 1/3 of its length above the base; pollen globose, inconspicuously porate, exine psilate; style ca.
12 mm; stamens immature; filaments terete, white, free; anthers linear, 9-10 mm long, base sagittate, apex obtuse, fixed near the base; pollen ellipsoid, sulcate, exine reticulate, lumina polygonal, muri distinctly narrowed; style about equaling the petals in immature state, white; stigma conduplicate, erect, densely papillose, white, blades ca.
Flowers subsessile, the lower ones pendulous-secund, corolla yellow; sepals free, 6 mm long, extended 3 mm wide, obovate, asymmetrical, the adaxial ones carinate, obtuse, adaxially glabrous, abaxially densely covered with ferrugineous trichomes, brown to yellow; petals 7 mm long, yellow, spathulate, acute, the blade spreading with recurving apex; stamens basally adnate to the petals; filaments 2-3 mm long, flat, white; anthers sagittate and closely arranged arround the stigma, 1 mm long, yellow; ovary 1.5 mm long, ovoid; style 1 mm long, with a 0.5 mm long stigma.