face |
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FEATURE |
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A relatively large, flat or shallowly curved portion of the external surface of a three-dimensional structure, bounded by more or less distinct topological discontinuities. |
actinodromous |
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venation |
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Having three or more primary veins that diverge radially from a point at or above the base of the blade and run toward the margin, reaching it or not. |
collateral |
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insertion |
buds |
In pairs within or immediately straddling the leaf axils, the members of a pair lateral to one another. |
diffuse-porous |
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porosity |
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Homogeneously porous, the vessels not differentially disposed by size or number. |
casing |
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STRUCTURE |
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The portion (if any) of a floral tube that is adnate to the gynoecium. See also collar, neck. |
cylindric(al) |
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solid shape |
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Solid and transversely round with a more or less uniform diameter, the ends blunt. |
suprabasal |
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position |
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Just above the base of the structure in point. |
drooping |
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orientation |
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Erect to salient (patent, porrect, spreading) proximally and curving downward distally. |
gummy |
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texture |
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Highly viscous and sticky, liquid or more or less deformably solid, sometimes more or less elastic. |
introrse |
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dehiscence |
anther |
Opening inwardly, on the adaxial side. See also extrorse, latrorse. |
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. |
aristate 2 |
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apex |
pappus scale |
Terminating in one or more awn- or bristle-like appendages. |
tetrad |
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STRUCTURE |
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A group of four pollen grains originating from a single pollen mother cell. |
knee-rooted |
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architecture |
plant |
Having knee roots. |
limb 2 |
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STRUCTURE |
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The portion of the corolla of a bisexual or staminate disc floret distal to the level of filament insertion; in Asteraceae (Compositae). |
xerocleistogamous |
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reproduction |
flower |
Normally chasmogamous but facultatively cleistogamous during drier than normal periods. |
rhizoid |
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STRUCTURE |
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Any structure that is similar to a root in appearance and function but that is not a true root ontogenetically and anatomically, especially one produced from a gametophyte thallus. |
weak |
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texture |
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Very pliable and unresilient. |
umbo pl. umbines, umbos |
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FEATURE |
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A relatively small, rounded or conical, central protrusion upon an essentially round, broad face. |
tuberous 2 |
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architecture |
structure |
Resembling a tuber in shape and texture, but not ontogenetically such; esp. roots. |
cirrhous |
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apex |
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Having a narrow spiral tip that is a continuation of the central primary vein. |
horizontal |
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orientation |
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Parallel to the horizon, perpendicular to the force of gravity. |
hysterophyllous |
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maturation |
non-foliar structure, esp. flower |
Maturing later than the leaves. |