beard |
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STRUCTURE |
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A growth of relatively long, erect, flexible, capillary trichomes from one or more limited sectors of a structure's surface. |
elongate |
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solid shape |
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Longer in one dimension than in any other. |
pepo |
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nominative |
fruit |
Like a berry but derived from a single, inferior, compound ovary, with accessory floral-tube tissue adnate to the pericarp, having a relatively thin, hard or leathery rind and a thicker, fleshy inner wall that surrounds a mass of seeds; esp. in Cucurbitaceae. |
plicate 1 |
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aestivation |
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Valvate with each member strongly infolded longitudinally. |
brochidodromous |
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venation |
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Having a single median primary vein that branches to either side along its length, the secondary veins incurving strongly near but short of the margin, interconnecting serially, and forming a succession of marginal loops. |
foliar |
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insertion |
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Upon or otherwise directly associated with the leaves. |
U-form |
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arrangement |
bundle scars |
Disposed in a truncated elliptical pattern, like the letter U. |
umbel |
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nominative |
inflorescence |
Pedunculate, determinate or indeterminate, simple or compound and apparently polychotomous, with one or more pedicellate flowers terminating each ultimate axis, the pedicels of each such floral set and the branches (rays) arising from each axial subdivision diverging from each other like the ribs of an umbrella, the whole plane, convex or concave distally. |
geminicolpate |
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architecture |
pollen grain |
Having four or more surficial grooves (colpi) disposed in pairs. |
radiate 1 |
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architecture |
capitulum (head) |
Bearing one or more peripheral series of florets that are pistillate (either fertile or sterile) or neuter and that have zygomorphic corollas, and one or more central series of bisexual or functionally staminate florets that have actinomorphic corollas; in Asteraceae (Compositae). |
rhachis |
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STRUCTURE |
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See rachis. |
heterotrophic |
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nutrition |
plant |
Dependent upon other organisms for some or all of its essential nourishment, assimilating such materials either directly from the other organisms, living or dead, or from their products. |
abortive |
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maturation |
spore, pollen, seed |
Never attaining functional maturity due to defective or arrested development. |
secund 2 |
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architecture |
stem |
Having the petioles oriented such that the main bodies of all the leaves lie to one side of the bearing stem. |
involute 1 |
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margin |
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Rolled adaxially. |
shoot 2 |
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STRUCTURE |
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A vascularized axis that is differentiated into nodes and internodes and that branches exogenously from the former, together with any non-axial structures borne from it. |
antipetalous |
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insertion |
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. |
collar 2 |
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FEATURE |
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The junction between the sheath and blade of a leaf; esp. in Poaceae (Gramineae). |
lineolate 2 |
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relief |
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Finely lineate, the depressions or protrusions short and often irregularly oriented. |
micropyle |
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FEATURE |
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The small pore in the integuments of an ovule at its apex, through which the pollen tube grows; or the corresponding aperture or scar in the coat of the seed that develops subsequently. |
arcuate 1 |
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course |
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Curving more or less regularly in one direction. |
subpetiolar |
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position |
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Just below the point of petiole insertion. |
strict |
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course |
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Lacking any curve or bend. |
symmetric(al) 1 |
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solid shape |
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Divisible into essentially equal halves along one or more lines or planes. |
superior 1 |
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insertion |
indusium |
Inserted at or near the apex of the sorus, distal to the sporangia. |