distichous

(redirected from distichously)
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distichous

[′dis·tə·kəs]
(biology)
Occurring in two vertical rows.
References in periodicals archive ?
or not the flowers; f) rachilla persistent or deciduous at maturity; g) type of rachilla disarticulation at maturity (not disarticulating, disarticulating above the prophyll, disarticulating below the prophyll, shattering with points of abscission at the base of each fruit or not shattering); h) rachilla with wings or wingless, i) wings deciduous or persistent; j) glumes spirally or distichously disposed; and k) glumes persistent or deciduous (completely, incompletely, individually or collectively deciduous).
Agardh) Tseng et Lu to sectional rank and emended their descriptions according to new sets of morphological characters to accommodate species with respectively cylindrical to slightly compressed axes possibly twisted, alternately and spirally arranged, and strongly flattened axes distichously arranged in one plan.
axes distichously arranged in one plan; elongated spatulate leaves with attenuated Taxonomic Epithet Key morphological rank characters base, cryptostomata thin to large, mostly aligned on each side of the midrib, and dentate margins; vesicles supported by a long pedicel, spherical to obovoid, smooth or with a short mutro, a foliar appendage or crown, or differentiated into phyllocysts; receptacles mostly bisexual, with serrate margins and arranged in dense cymose glomerules.
This is very common in species with distichously organised spikelets (e.
Spikelets consist of an indeterminate rachilla, on which new glumes originate spirally to distichously.
5 cm wide, with a sterile base 1-5 cm long bearing a single sterile bract at the base, with sterile bracts at the apex, slightly recurved; rachis green, strongly geniculate, lepidote, laxly and distichously 8 to 12-flowered; floral bracts ca.
Leaves 10-15, distichously arranged or nearly so, coriaceous; sheaths distinctly broader than the blades, the older ones forming a subglobose base, 3.
Spikes arching-pendulous, laxly distichously 3-8-flowered, 1-3.
60 mm long (with extended petals), odorless, erect at anthesis, sessile, those of the simple part of the inflorescence densely and polystichously arranged, those of the fascicles distichously and densely to subdensely arranged; sepals obovate, strongly asymmetrical with the lateral membranaceous, rounded wing distinctly surpassing the midnerve, green, densely white-lepidote-farinose to glabrescent, ecarinate, thickly coriaceous mainly toward the base except for the membranaceous wing, 22-23 x 10-11 mm, connate at base for ca.
strobilate), with distichously arranged flowers (vs.