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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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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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thallus 1 pl. thalli |
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STRUCTURE |
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The vegetative portion of a shoot when not differentiated into stem and leaves; esp. in Lemnaceae. |
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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 |
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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 |
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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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adenopetalous 2 |
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derivation |
flower, perianth, corolla |
Having petals derived from glandular structures. |
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foliose 1 |
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architecture |
stem |
Bearing many leaves. |
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mamillate |
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relief |
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Bearing mamillae. |
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stylopodium pl. stylopodia |
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STRUCTURE |
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A discoid enlargement at the base of the styles; esp. in Apiaceae (Umbelliferae). |
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infrafoliar |
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insertion |
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Upon the stem directly below a leaf insertion. |
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amphimictic |
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reproduction |
taxon, plant |
Reproducing sexually. |
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radical |
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position |
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Upon, arising from, or otherwise directly associated with the root. |
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subvalvate |
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dehiscence |
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Incompletely or partly valvate. |
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caespitose |
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habit |
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See cespitose. |
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involucrate 2 |
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architecture |
capitulum (head) |
Having an involucre. |
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perianth tube |
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STRUCTURE |
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A relatively narrow, fully connate portion of a syntepalous (gamotepalous) perianth proximal to a broader portion (limb) that comprises the distinct or connate distal portions of the tepals. |
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sinus pl. sinus, sinuses |
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FEATURE |
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The space, indentation, or invagination (or, for some descriptive purposes, the outline thereof) between and delimiting any two consecutive or adjacent lobes or teeth of a structure. |
