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epidermal cell |
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STRUCTURE |
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Any of the unspecialized cells of an epidermis; i.e., any other than stomatal guard cells or cells directly associated with trichomes. While the latter specialized cells are also properly epidermal cells, they are treated separately for descriptive purposes and, for the sake of convenience, use of the general term is restricted to the unspecialized cells that constitute the bulk of an epidermis. |
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anisopetalous |
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architecture |
flower, perianth, corolla |
Having petals unequal in size and/or shape. |
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glomerulate |
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architecture |
inflorescence |
Comprising one or more glomerules; esp. in Asteraceae (Compositae). |
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multiciliate |
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architecture |
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Having several to many cilia. |
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synangium pl. synangia |
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STRUCTURE |
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A compound sporangium; an aggregation of coherent sporangia, the whole multilocular. |
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lamella pl. lamellae |
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STRUCTURE |
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A thin layer of tissue that forms a plate within tissue of lesser density or between areas of empty space. |
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apocarpous |
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architecture |
flower, gynoecium |
Having two or more simple pistils (carpels). |
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caudex pl. caudices |
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STRUCTURE |
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The short, persistent, thickened, more or less erect, main stem of a perennial plant that otherwise has annual stems. |
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root 1 |
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STRUCTURE |
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Collectively, all those portions of a plant body that are anatomically distinct from the shoot, the component axes not differentiated into nodes and internodes, and branching endogenously. |
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terminal |
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position |
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Apical and with the same developmental axis as the whole, of which it is the distalmost portion or appendage. |
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oblique 1 |
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apex |
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Asymmetric about its longitudinal axis. |
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tiller |
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STRUCTURE |
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An erect or ascending stem that branches from the base of another at or below the surface of the ground; esp. in Poaceae (Gramineae) and other monocotyledons (Liliidae). |
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present |
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presence |
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Occurring within the context in point. |
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hilum 2 pl. hila |
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FEATURE |
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The more or less central point within a starch grain of intracellular origin, about which the successive layers of starch were accreted more or less symmetrically. |
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trichotomocolpate |
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architecture |
pollen grain |
Having a triradiate surficial groove (colpus). |
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hip |
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nominative |
fruit |
Aggregate and consisting of several to many achenes enveloped by a free, urceolate, more or less fleshy, accessory structure derived from floral tube tissue; esp. in Rosa (Rosaceae). |
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trichotomous |
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architecture |
axis |
Branching by division of the apical meristem producing three coordinate but not necessarily equal derivatives from each division. |
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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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basicauliramous |
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architecture |
plant |
Having the stem(s) branching at or near the base. See also basiramous. |
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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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accessory 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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birettaform |
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solid shape |
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Approximately square in cross section and shallowly convex at the top; like a biretta (Roman Catholic cleric's hat). |
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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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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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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. |
