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divaricate |
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arrangement |
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Strongly divergent. |
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rhizoid |
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STRUCTURE |
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Any structure that is similar to a root in appearance and function but that is not a true root ontogenetically and anatomically, especially one produced from a gametophyte thallus. |
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sellaeform |
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solid shape |
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See selliform. |
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subsidiary cell |
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STRUCTURE |
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One of the cytologically distinctive epidermal cells that are sometimes present in a stomate and that surround and are regularly oriented in relation to the guard cells. |
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intravaginal |
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position |
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Within the leaf sheath. |
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toothed |
= dentate |
margin |
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Having regularly spaced, angular convexities oriented more or less perpendicular to the generalized perimeter. See also small-toothed (denticulate); See also sawtoothed (serrate), scalloped (crenate), small-sawtoothed (serrulate), small-scalloped (crenulate). |
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lineolate 1 |
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coloration |
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Finely lineate, the lines short and often irregularly oriented. |
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mamillate |
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relief |
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Bearing mamillae. |
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bristle 2 |
= seta; > glochid, glochidium; < trichome |
STRUCTURE |
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A trichome that is elongate, more or less straight, terete, fine-pointed, and stiff. |
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partite |
? cleft, dissected, divided, lobate, lobed, parted, segmented |
plane shape |
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Having two or more component sectors or peripheral protrusions that are delimited by concavities in the surface or margin and that are not proximally distinct from the remainder of the whole. The meanings of this term and its approximate synonyms sometimes have been supposed to differ according to the depth of the delimiting concavities relative to the midline or midpoint of the overall structure, and/or to the shape or proportions of the protrusions or sectors; however, there has been little consistency in the applications of the various terms according to such distinctions, which are ones only of degree and are necessarily arbitrary in any case. In general usage, these terms differ only indistinctly and connotatively: cleft, lobed (or lobate), parted (or partite) and segmented tend to connote fewer protrusions or sectors; lobate usually connotes as well a generally rounded shape; dissected tends to connote more numerous sectors that are elongate and angular. See also cut (incised, lacerate, torn), laciniate (slashed). |
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epirhizal |
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position |
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Upon or arising from the roots. |
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flush |
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prominence |
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Even with the surrounding surface, neither higher nor lower than its general level. |
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spathulate |
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plane shape |
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See spatula-shaped, spatulate. |
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strigillose |
= strigulose |
pubescence |
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Finely strigose. |
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tessellate 2 |
= checkered |
relief |
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Having a pattern of regularly disposed squares marked by raised or depressed vasculature. |
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lens-shaped 1 |
= biconvex, lenticular |
plane shape |
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Elongate, narrow, broadest at the middle, attenuate to acute ends, the sides convex; like the outline of a couble-convex lens viewed from its edge. |
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uni… |
= mono…, one-…, single-… |
prefix |
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Indicating presence of or constitution by one entity of the type denoted by the term's stem; as in unicellular, unifloral, unifoliate. See also entries for particular terms with this prefix whose meanings, at least in some applications, are more specific than usually indicated by such combination. |
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acephalous 1 |
= headless |
architecture |
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Not terminated or surmounted by a head-like structure, esp. when one might be expected. |
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lobed |
? cleft, dissected, divided, lobate, parted, partite, segmented |
solid shape |
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Having one or more component sectors or peripheral protrusions that is/are delimited by concavities in the surface or margin and that is/are not proximally distinct from the remainder of the whole. The meanings of this term and its approximate synonyms sometimes have been supposed to differ according to the depth of the delimiting concavities relative to the midline or midpoint of the overall structure, and/or to the shape or proportions of the protusions or sectors; however, there has been little consistency in the applications of the various terms according to such distinctions, which are ones only of degree and are necessarily arbitrary in any case. In general usage, these terms differ only indistinctly and connotatively: cleft, lobed (or lobate), parted (or partite) and segmented tend to connote fewer protrusions or sectors; lobate usually connotes as well a generally rounded shape; dissected tends to connote more numerous sectors that are elongate and angular. See also cut (incised, lacerate, torn), laciniate (slashed). |
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blade |
= lamina |
STRUCTURE |
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The expanded, more or less planate, distal portion, when present, of a leaf, leaflet or bract. |
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neck (archegonial) |
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STRUCTURE |
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The distal narrowed portion of an archegonium above its bulbous base. |
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cauline |
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position |
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Upon, arising from, or otherwise directly associated with the stem. |
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palmatifid |
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solid shape |
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Palmately lobate; having three or more lobes whose longitudinal axes radiate from a common point. |
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plane shape |
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CHARACTER |
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Overall two-dimensional form or aspect(s) thereof. Overlaps conceptually with architecture, arrangement, habit, insertion, orientation, and position. |
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cell 1 |
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STRUCTURE |
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Any of the basic structural/functional units that collectively or individually make up the various tissues of a plant; comprising, at least while physiologically active, a nucleus with included genetic material (chromosomes), a surrounding cytoplasm with included organelles (e.g., ribosomes, mitochondria, plastids), an enclosing membrane, and an exterior cellulosic wall. |
