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adj. Botany
Arranged in two vertical rows on opposite sides of an axis: distichous leaves.

[From Latin distichus, having two rows, from Greek distikhos; see distich.]

dis′ti·chous·ly adv.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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venustula Kunth) have distichously arranged glumes (Vrijdaghs et al, 2009), and Scirpoides varius Browning present the glumes with spiral phyllotaxis but occasionally appearing almost distichous (Browning & Gordon-Gray, 2011).
Leaves simple, cross-opposite or distichously, rarely alternate or verticillate, eucamptodromous or acrodromous.
0.9 cm wide, sublax, complanate, with 8 to14 distichously arranged lowers ca.
Although all these species have distichously arranged flowers, however, with the exception of T.
Morphological variation in this species is high, particularly in the lateral blades that distichously cover the flattened branches.
In species of Scleria, the glumes are disposed distichously in the pistillate spikelets, while the subandrogynous spikelet, staminate spikelet, and androgynous spikelet have one proximal portion with glumes disposed distichously and one distal portion with glumes disposed spirally (Camelbeke, 2002; Ahumada & Vegetti, 2009); this arrangement of the glumes is also characteristic of the bisexual spikelets of Abildgaardia ovata.
The flowers are densely distichously arranged on the branches, but clearly move apart after anthesis.
Secondary or other order axes or branches are cylindrical or flattened in section, with a smooth or 'spiny (1)' surface, and are distichously or spirally arranged.