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dichasium pl. dichasia |
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nominative |
inflorescence |
Determinate and falsely dichotomous with each axial segment bearing a sessile terminal flower and either a pair of opposite pedicellate lateral flowers or a pair of opposite lateral branches. See also cincinnus, cyme, cymule, helicoid cyme, monochasium, scorpioid cyme. |
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palaceous |
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architecture |
foliaceous structure |
Having the petiole attached to the abaxial face of the blade at some point within the margin and adnate to it from there to the margin, thus peltate but with the distal portion of the petiole adnate to the blade, the whole shovel- or spade-like. |
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berry |
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nominative |
fruit |
Indehiscent, few- to many-seeded, and derived from a single, simple or compound ovary; fleshy throughout except for the seeds. See also hesperidium, pepo. |
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pseudoterminal |
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position |
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Only apparently terminal; originally subapical but displaced toward the apex by differential growth during development. |
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acrodromous |
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venation |
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Having two or more primary and/or strongly developed secondary veins that diverge at or above the laminar base and are thence convergently arcuate toward the apex, reaching it or not. |
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coloration |
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CHARACTER |
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Hue(s), intensity(ies), and/or pattern (if any) of coloring. When more than one hue and/or intensity is involved, a term describing the pattern of contrast will be applicable, and the description as a whole should be phrased to indicate the particular role of each in the pattern; e.g., "ovaries striate, yellow on green"; "petals pink, spotted yellow basally"; "sepals green, suffused with red". |
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pappus pl. pappi |
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STRUCTURE |
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A set of one or more awns (aristae, bristles, setae) or scales at the summit of an inferior ovary just beneath or outside the free portion of the corolla; persisting in the fruit (cypsela) and often aiding wind or animal dispersal; in Asteraceae (Compositae). Considered by some to be an evolutionarily modified upper calyx portion, the lower portion having been incorporated into the floral tube casing adnate to the ovary wall; considered by others to be an outgrowth from the ovary wall. |
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indeterminate |
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development |
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Having the lateral (peripheral, basal, or proximal) portions differentiating first and the terminal (central, apical, or distal) portion later, development thus proceeding sequentially upward or inward. |
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quincunx |
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aestivation |
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Imbricate in one whorl of five members, two wholly exterior, two wholly interior, and one partially exterior and partially interior. |
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valve |
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STRUCTURE |
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Any longitudinal segment of a fruit wall delimited by lines of dehiscence. |
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internodal |
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position |
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Upon or otherwise directly associated with the internodes. |
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elliptic(al) 1 |
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arrangement |
bundle scars |
Forming an ellipse |
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siliceous |
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texture |
epidermis, trichome |
Containing deposits of silica, thus hardened and abrasive. |
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vascular |
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insertion |
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Upon or otherwise directly associated with the vasculature. |
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internode |
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STRUCTURE |
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Any portion of a stem between two successive nodes. |
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superposed 1 |
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arrangement |
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Approximate to congested, inserted directly above and below one another. |
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andromonoecious |
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reproduction |
taxon |
Having all plants with both bisexual flowers and staminate ones. |
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solid shape |
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CHARACTER |
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Overall three-dimensional form or aspect(s) thereof. Overlaps conceptually with architecture, arrangement, habit, insertion, orientation, position, relief, and texture (as to thickness). |
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campylotropous |
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orientation |
ovule |
Having the (reniform) ovule curved toward the ovary wall, the micropyle facing the wall, and the funiculus attached near the center of the concave side, the curvature and displacement of funicular insertion due to asymmetrical growth during ontogenesis. |
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reticulodromous |
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venation |
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Having a single median primary vein that branches to either side along the length of the lamina, the secondary veins running thence toward the margin, branching repeatedly, becoming less distinct, and yielding a dense higher-order reticulum near the margin. |
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antipetalous |
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position |
equivalent floral structures |
Each inserted directly above or below a petal. In place of this term, the phrase "opposite the petals" is often used, but that contradicts the sense of opposite as otherwise employed (arrangement of lateral structures along an axis) and should be avoided. |
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spinulose |
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apex |
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Finely spinose. |
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…ternate |
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architecture |
foliaceous structure |
Compound with the number of orders of leaflets indicated by the prefix, each order ternate; as in biternate, thrice-ternate. |
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arcuate 2 |
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plane shape |
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Elongate and more or less regularly curved from one end to the other, one side convex, the opposite concave. |
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pneumatophore |
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STRUCTURE |
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A structurally and functionally specialized root serving as an aboveground aerating organ; found in some woody taxa of wet habitats, notably some mangroves. |
