coleorhiza |
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STRUCTURE |
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A sheath-like structure enclosing the radicle (embryonic root) in an embryo; esp. in Poaceae (Gramineae). |
andropetalous 2 |
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derivation |
flower, perianth, corolla |
Having some or all petals derived from stamens. |
costal |
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insertion |
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Upon or otherwise directly associated with the costa(e) of a laminar structure. |
sterile |
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reproduction |
plant, reproductive structure |
Not producing functional spores, gametes, pollen, ovules, seeds, or other propagules. |
convolute 3 |
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vernation |
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Each rolled laterally and wholly surrounded by and/or surrounding the one(s) next adjacent. |
microphyll |
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STRUCTURE |
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A small, lateral, leaf-like enation that, evolutionarily, is not a true leaf, i.e., whose vasculature, if any, consists of only a single median strand not ontogenetically integral with the vasculature of the bearing stem and not associated with leaf gaps in the stele of the stem; in Bryophyta, Psilotophyta, Lycopodiophyta, Equisetophyta. |
cyathiform |
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solid shape |
perianth, calyx, corolla, pappus |
Having a cupulate tube and an indistinct, erect limb. See also cotyliform, urceolate (urn-shaped). |
matted |
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habit |
plants |
Growing in extensive, low, dense aggregations, sometimes with the stems of different plants intertwined. |
nectariferous |
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exudation |
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Producing and secreting nectar; when glands are nectariferous, they are usually indicated nominatively as nectaries. |
didynamous |
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architecture |
flower, androecium |
Diadelphous with two stamens in each set. See also tetradynamous. |
symmetric(al) 1 |
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architecture |
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Divisible into essentially equal halves along one or more lines or planes. |
obtrulloid |
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solid shape |
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Inversely trulloid. |
nutrition |
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CHARACTER |
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Mode of acquiring nutrients. |
asymmetric(al) 1 |
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architecture |
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Not divisible into essentially equal halves along any line or plane. |
tendril |
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STRUCTURE |
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A slender stem branch, modified leaf, or portion of a leaf that twines about a supporting structure. |
epichilium |
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STRUCTURE |
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The distal portion of a labellum (lip) that has distinct proximal, distal, and sometimes also central parts; in Orchidaceae. See also hypochilium, mesochilium. |
opposite 2 |
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arrangement |
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Having the members of each whorl inserted directly above and/or below those of the next adjacent whorl(s). See also antipetalous, antisepalous. |
trulloid |
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solid shape |
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Elongate, basically square in transverse section, broadest below the middle, regularly attenuate to angular ends, all faces essentially plane. See also obtrulloid. |
elongate |
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plane shape |
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Longer in one dimension than in any other. |
barb 2 |
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STRUCTURE |
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A trichome terminated by one or two small, relatively short, stiff, sharp, acutely reflexed appendages. |
parietal |
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placentation |
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Upon the inner wall surface of a unilocular ovary, thus peripheral within the locule. |
full |
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extent |
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Reaching from the ovary wall or pericarp to the center of the ovary or fruit and from the apex to the base of its interior, thus separating adjacent locules completely. |
rhachilla |
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STRUCTURE |
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See rachilla. |
heterosporous |
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reproduction |
taxon |
Producing two types of spore, microspore and megaspore, which are sexually distinct and usually different in size, each megaspore giving rise to a megagametophyte, each microspore to a microgametophyte. |
rectangular |
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plane shape |
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Basically four-sided, the sides more or less straight, those of each opposing pair more or less parallel, the generalized angles between adjacent sides approximately 90°. |