polystichous


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Related to polystichous: Polystichum

po·lys·ti·chous

(pə-lĭs′tĭ-kəs)
adj.
Arranged in two or more rows.
References in periodicals archive ?
Both distichous and polystichous radulae lack a central, median tooth like the rachidians in gastropod radulae, the only exception being in some species of Proneomeniidae (e.
Body elongate, slender, smooth, to 10 cm long, with or without posterior fingerlike projection; skeletal spicules hollow, in several layers; upright spicules, if present, solid, paddle-shaped, small; cuticle thick; epidermis thin, with long, stalked epidermal papillae extending through the cuticle; radula polystichous, largest teeth in each row lateral, tooth rows on each side of median line mirror images, some species with a median tooth; anteroventral radular pocket single (Fig.
Superficially, it resembles Aechmea penduliflora Andre, widespread in Central and South America, but the more laxly arranged polystichous, pedicellate flowers argue against any relationship.
2 cm in diameter; floral bracts white, linear, acuminate, membranaceous, 4-8 mm x 1 mm, entire; flowers polystichous, ascendent to divaricate, numerous, densely disposed, actinomorphic, pedicellate, the pedicels 2.
5 mm, entire; flowers polystichous, ascendent to adpressed, numerous, densely disposed, actinomorphic, pedicellate, the pedicels 4.
polystichous arranged flowers) and concealed by comparatively large thin-textured primary bracts (vs.
albo-lutea always maintains a completely polystichous inflorescence (where in P.