distichous


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distichous

[′dis·tə·kəs]
(biology)
Occurring in two vertical rows.
References in periodicals archive ?
Spikelets with few-many glumes have spiral or distichous phyllotaxis (Fig.
0) distichous, (1) spiral (helicoid; see Gonzalez, 1999b).
4 cm wide, imbricate but the rachis visible after anthesis, nervate, ecarinate, glabrous outside, brown punctulate-lepidote inside, margin erose, apex rounded to acute; flowers distichous, erect, (5)15-20 per spike, actinomorphic, corolla helicoiform, subsessile; sepals free, green, oblong, 3-3.
5 cm apart, yellow-green, complanate, lepidote, slightly curved, distichous, spikes slightly nodding; peduncle 15-20 cm long, ca.
Distichous radulae are of two types: they are formed of (1) bars entirely attached to the radular membrane and bearing denticles or serrations (Figs.
Leaves up to 3, basal, deciduous, erect, distichous, membranous (slender and translucent when dry), linear-lanceolate, acuminate, minutely dentate along the margins, carinate on the external surface, 6-10 cm x 1-2 mm.
A remarkable maize mutant, aberrant phyllotaxy1 (abph1) displays a decussate phyllotactic pattern (leaves are paired at 180[degrees] and the following leaf pair develops at a 90[degrees] angle) while wild type maize develops as distichous (alternating leaf initiation) plants.
1987 Werner Rauh introduced us to a startling distichous leaved Dyckia but in the same year he gave a more reasoned account regarding its origins in German in Trop.
series Binderiana Distichous axis, (Grunow) Tseng compressed to et Lu flattened.
Flowers distichous, anthesis nocturnal, with an odor, strongly downwardly secund at anthesis, densely to subdensely arranged, 65-70 mm long (not including the stamens), pedicels stout, 6-11 mm long, ca.
5 cm wide, complanate, up to 28 flowered, larger than the leaves, floral bracts distichous, imbricate, longer than the sepals, glabrous, the basal ones rose-coloured, the upper ones bright green, marginally wine-coloured, widely ovate, conduplicate, carinate, acuminate, with a pungent apex, conspicuously nerved when dried, 5-5.
concinna is cespitose, with distichous leaves that have 32-45 linear to lanceolate pinnae per side, the pinna margins densely spiny.