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involucrate 2 |
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architecture |
capitulum (head) |
Having an involucre. |
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surface |
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FEATURE |
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The exterior or bounding area or layer of any structure, regarded as being infinitely thin; usually described as to relief, reflectance, and/or vesture. |
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anisosepalous |
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architecture |
flower, perianth, calyx |
Having sepals unequal in size and/or shape. |
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corymbose |
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architecture |
inflorescence |
Comprising one or more corymbs. |
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piliferous |
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apex |
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Having a distinct, fine, weak, hair-like portion or protrusion. |
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apolar |
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architecture |
pollen grain, spore |
Lacking morphologically evident polarity. |
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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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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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spore |
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STRUCTURE |
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A simple, usually unicellular, sometimes oligocellular propagule derived by meiotic division of a diploid (2n chromosomes) sporocyte within a sporangium, thus of haploid (n chromosomes) genetic constitution. A spore constitutes the first ontogenetic stage of a gametophytic generation and gives rise to a usually multicellular gametophyte upon germination. Though technically present in seed-bearing plants, by itself it is descriptively significant only in those taxa that do not produce seeds. |
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extrafloral |
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position |
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Outside and proximal to the flower; esp. nectaries. |
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thallus 1 pl. thalli |
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STRUCTURE |
|
The vegetative portion of a shoot when not differentiated into stem and leaves; esp. in Lemnaceae. |
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aromatic |
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odor |
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Having a distinct odor; usually restricted to pleasant odors. |
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nut |
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nominative |
fruit |
Relatively large, indehiscent, one-loculed, one-seeded and with a thick, hard, sometimes osseous pericarp; derived from a single, simple or compound ovary. See also acorn (glans). |
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polyplicate |
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architecture |
pollen grain |
Inaperturate with meridional folds, thus appearing longitudinally wrinkled. |
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herbaceous 1 |
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habit |
plant |
Having no significant degree of secondary growth in any part of the shoot, which thus does not develop woody (lignified) tissue. |
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basicaulous |
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insertion |
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At or very near the stem base. |
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dilate(d) |
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solid shape |
elongate structure |
Narrow at one end and broadening toward the other; esp. when essentially terete at the narrow proximal end and seemingly flattened distally, as some anther filaments. |
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stipule |
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STRUCTURE |
|
Any distinct, relatively diminutive, more or less foliaceous structure inserted on a stem alongside a petiole, or on a petiole near its base, and ontogenetically closely associated with the leaf; usually occurring as one of a pair disposed one to either side of the petiole. |
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palmatifid |
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solid shape |
|
Palmately lobate; having three or more lobes whose longitudinal axes radiate from a common point. |
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U-form |
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arrangement |
bundle scars |
Disposed in a truncated elliptical pattern, like the letter U. |
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adherent |
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fusion |
dissimilar structure(s) |
Superficially joined with or to one or more other dissimilar structures, the connection(s) with no significant histological continuity. See also coherent. |
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foliose 2 |
|
architecture |
thallus |
Having leaf-like lobes; in Hepaticae. |
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mamma pl. mammae |
|
STRUCTURE |
|
A rounded-conoidal protrusion, resembling the breast of a mammal. |
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infrafoliar |
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position |
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Upon the stem directly below a leaf insertion. |
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succulent |
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texture |
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Herbaceous and juicy, often thickened (incrassate). |
