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coronal |
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insertion |
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Upon or otherwise directly associated with the corona. |
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knee 1 |
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STRUCTURE |
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An abrupt bend in an axial or other elongate structure. |
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spathaceous 1 |
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architecture |
plant, inflorescence |
Bearing a spathe or spathes. |
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epipetalous |
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position |
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Upon the petals, or partially adnate thereto and apparently arising therefrom. |
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apex pl. apices |
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CHARACTER |
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Configuration of the uppermost, distal, or terminal portion of a structure, its extent determined somewhat subjectively in relation to the shape of the structure as a whole. The concept of apex varies from one descriptive context to another, since the apex is not a clearly delimited, morphologically distinct entity. The terms for describing apical condition are not strictly coordinate logically — some are more inclusive than others, some describe conditions involving what can be regarded as appendages, and some refer to the apex in a developmental as well as a strictly topological sense — and precise characterization may require using more than one descriptor. The semantic antecedent of some descriptors is "apex," whereas the antecedent of others is the structure as a whole (e.g., leaf ). |
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rhachilla |
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STRUCTURE |
|
See rachilla. |
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syngenesious |
|
fusion |
flower, androecium |
Having the anthers connate or coherent and forming a ring. |
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laminate |
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architecture |
foliaceous structure |
Having an expanded, more or less planate, distal portion (lamina or blade). |
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pith |
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STRUCTURE |
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The central ground tissue of a stem or, when present, of a root, consisting of thin-walled parenchyma cells; distinct and more or less soft and spongy relative to the other tissues of the axis; sometimes partly or wholly degenerating after secondary growth has begun. |
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exindusiate |
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architecture |
sorus |
Lacking an indusium. |
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nodule |
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STRUCTURE |
|
A small nodiform (gongylodate, gongyloid, knob-shaped, knot-shaped) segment or protrusion; esp. in roots of Fabaceae (Leguminosae) and harboring nitrogen-fixing bacteria. |
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cupule |
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STRUCTURE |
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A cup-like structure inserted at the base of a fruit, partially enclosing it or not; composed of a persistent, usually dried, sometimes hardened involucre, perianth, or portion thereof, the constituent parts often coalescent, yielding a unitary structure. |
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chalaza pl. chalazae, chalazas |
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STRUCTURE |
|
The basal (proximal) portion of an ovule, adjacent to its junction with the funiculus. |
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lemma pl. lemmata, lemmas |
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STRUCTURE |
|
The proximal bract of the (usually) two that immediately subtend the flower in a grass (Poaceae) floret; the other is the palea. |
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pollinial |
|
arrangement |
pollen |
Polyadal with the grains of individual thecae (pollen sacs), or of fused thecae, compacted and forming tightly coherent masses (pollinia) that constitute the basic dispersal units, these sometimes distally attenuate to a sterile caudicle (translator arm), sometimes united by caudicles in groups of two or more, the caudicle(s) sometimes attached to a viscidium, either directly or through an intervening stipe; esp. in Asclepiadaceae, Orchidaceae. |
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fastigiate |
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arrangement |
branches |
Closely parallel to one another and to the axis of origin over most of their lengths. |
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obscure |
|
manifestation |
|
Hardly evident. |
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salt-excreting |
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exudation |
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Accumulating salt and discharging it directly to the exterior in a concentrated aqueous solution, the salt then crystallizing on the exterior following evaporation of the fluid medium; when salt-excreting glands are indicated in the nominative, usually they are called simply salt glands. |
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dehiscence |
|
CHARACTER |
|
Mode of opening (splitting or forming apertures). |
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primocane |
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STRUCTURE |
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A biennial or perennial stem before it has begun flowering, when the latter does not occur until at least its second season of growth; esp. in Rubus (Rosaceae). |
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sterigma pl. sterigmata |
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STRUCTURE |
|
A portion of a lamina that is prolonged and adherent to the supporting axis beneath the point of vascular insertion. |
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fistulose |
|
solid shape |
|
Basically tubular with closed ends. |
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biennial 1 |
|
duration |
plant, stem |
Normally living two years; germinating or forming and growing vegetatively during one cycle of seasons, then reproducing sexually and dying during the following one. |
