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elater 2 |
|
STRUCTURE |
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An elongate, flattened, hygroscopic enation from a spore, straightening upon desiccation and aiding transport by air; esp. in Equisetaceae. |
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mamma pl. mammae |
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STRUCTURE |
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A rounded-conoidal protrusion, resembling the breast of a mammal. |
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cladode |
= cladophyll, phylloclade |
STRUCTURE |
|
A stem segment that functions as a leaf; often more or less compressed. |
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sickle-shaped 2 |
= falcate |
solid shape |
|
Elongate, strongly compressed, and arcuate in the plane of compression, the two faces more or less plane and parallel, the degree of curvature decreasing distally or not; like a sickle blade. |
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basal |
< proximal |
position |
|
At or very near the developmental origin (base) of a structure. |
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denticulate |
= small-toothed |
margin |
|
Finely dentate (toothed). See also crenate (scalloped), crenulate (small-scalloped), serrate (sawtoothed), serrulate (small-sawtoothed). |
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ladder-like |
= scalariform |
arrangement |
|
Disposed in vertical sequence with long axes horizontal and parallel. |
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tessellate 2 |
= checkered |
relief |
|
Having a pattern of regularly disposed squares marked by raised or depressed vasculature. |
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falcate 1 |
= sickle-shaped |
plane shape |
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Elongate and laterally arcuate with the lateral edges more or less concentric, the degree of curvature decreasing distally or not; like the outline of the face of a sickle blade. |
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convolute 3 |
|
vernation |
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Each rolled laterally and wholly surrounded by and/or surrounding the one(s) next adjacent. |
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spur 1 |
|
STRUCTURE |
|
A hollow protrusion from a calyx or corolla, often nectariferous. |
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bundle scar |
|
FEATURE |
|
A smaller scar within the bounds of a leaf scar at the point where a vascular bundle traversed the abscission layer between stem and leaf. |
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porous |
|
porosity |
|
Having vessels present. |
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…lobed |
? …cleft, …fid, …lobate, …parted, …partite, …segmented |
solid shape |
|
Having the number of lobes indicated by the prefix; as in five-lobed. |
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tufted 2 |
> floccose |
pubescence |
|
Of or bearing tufts of soft, fine, capillate trichomes that rub off easily. |
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seriate |
= cyclic, verticillate, whorled |
arrangement |
|
Disposed along the axis in groups of three or more, the members of each group (cycle, series, verticil, whorl) inserted around the axis at the same level. |
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hypocotyl |
|
STRUCTURE |
|
That portion of an embryo axis between the level of cotyledon insertion above and the root meristem (or radicle, if present) below. |
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cylindric(al) |
|
solid shape |
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Solid and transversely round with a more or less uniform diameter, the ends blunt. |
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stylopodium pl. stylopodia |
|
STRUCTURE |
|
A discoid enlargement at the base of the styles; esp. in Apiaceae (Umbelliferae). |
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dropper |
= tuberoid |
STRUCTURE |
|
An axial outgrowth that descends from a bulb and eventually forms a new bulb; esp. in Orchidaceae. |
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radiate 2 |
= radial, radiant, stellate |
arrangement |
|
Disposed about and mutually divergent from a common geometric center in two or three dimensions, thus collectively actinomorphic. |
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compressed |
= complanate; < flattened |
solid shape |
|
Flattened bilaterally, parallel to the longitudinal axis, as though pressed or squeezed from opposing sides, the external surface otherwise basically convex. Used alone, this term usually implies a strong degree of flattening; otherwise, it is often used in combination with some other term that describes the overall shape exclusive of ("before") flattening, e.g., compressed-ovoid. See also depressed, obcompressed. |
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bracteole 2 |
= bractlet, prophyll(um); < bract |
STRUCTURE |
|
A second- or higher-order bract within, and subtending some portion of, an aggregate branching structure, especially when subtending a flower. |
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lidded |
= operculate |
architecture |
|
Having a lid (operculum). |
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eusporangiate |
|
reproduction |
|
Having relatively large sporangia each of which develops from a group of initial cells that, by periclinal divisions, give rise to an outer layer of primary cells and an inner layer of sporogenous cells; in Psilotophyta, Lycopodiophyta, Equisetophyta, and some Polypodiophyta. |
