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superior 1 |
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insertion |
indusium |
Inserted at or near the apex of the sorus, distal to the sporangia. |
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soft |
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texture |
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Yielding under slight pressure. |
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vexillate |
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aestivation |
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Having a larger member oriented more or less perpendicular to and folded about the others. |
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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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anticlinal |
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orientation |
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Perpendicular to some given plane of reference; applied especially to the plane of cell division when it is oriented at right angles to the generalized plane of the structural surface. |
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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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architecture |
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CHARACTER |
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Composite structural configuration as to type, orientation, symmetry, insertion, position, fusion, presence, number, relative size, shape, texture, differentiation, and/or derivation of components and features. Overlaps conceptually with habit. |
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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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fasciate(d) |
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fusion |
equivalent structures |
Abnormally proliferated in size and/or number and more or less connate, the result often monstrous. |
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asymmetric(al) 1 |
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plane shape |
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Not divisible into essentially equal halves along any line or plane. |
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oblique 1 |
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base |
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Asymmetric about its longitudinal axis. |
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tillering |
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architecture |
plant, stem |
Producing tillers; esp. in Poaceae (Gramineae) and other monocotyledons (Liliidae). |
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decompound |
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architecture |
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Comprising two or more orders of equivalent substructural entities; multiply compound. |
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limb 1 |
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STRUCTURE |
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A relatively broad portion of a syntepalous (gamotepalous) perianth, synsepalous (gamosepalous) calyx, or sympetalous (gamopetalous) corolla distal to a narrower tube, spreading outward or ascending from the tube, comprising the distinct or connate distal portions of the tepals, sepals, or petals; except in bisexual or staminate disc florets of Asteraceae (Compositae). |
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prickle |
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STRUCTURE |
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Any unvascularized spine-like enation originating in the epidermis, cortex, or mesophyll of any shoot part. See also spine, thorn. |
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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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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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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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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. |
