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stomatal apparatus |
= stomate, stoma (broad sense) |
STRUCTURE |
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A localized functional epidermal unit consisting of a microscopic pore and two encircling specialized cells, the guard cells, which, through changes of turgor pressure in response to environmental conditions, regulate the size of the pore and thus the rates of transpiration and gas exchange through it; the whole surrounded or not by associated, cytologically distinctive epidermal cells, the subsidiary or accessory cells, which, when present, are regularly oriented in relation to it. |
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gynaecium |
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STRUCTURE |
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See gynoecium. |
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teardrop-shaped 1 |
= lacrimate |
plane shape |
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Broadest just below the middle, broadly rounded to the base, and acutely attenuate to the apex; like the stylized lateral outline of a teardrop. |
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incised |
= cut, lacerate, torn; > laciniate, slashed |
plane shape |
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Having straight to irregular lines of separation extending inward from the margin. See also cleft (dissected, divided, lobate, lobed, parted, partite, segmented). |
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umbilicate |
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solid shape |
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Having a relatively small, transversely round, central depression in an essentially round broad face. |
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lax |
= loose |
architecture |
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Having equivalent constituent parts disposed distant from one another. |
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zig-zag |
= flexuous |
course |
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Having alternating angular bends to either side, more or less straight between the bends. |
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multiciliate |
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architecture |
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Having several to many cilia. |
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carpophore 3 |
= columella; < stalk |
STRUCTURE |
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The stalk supporting a mericarp after dehiscence of a schizocarpic fruit, the central axis of the fruit having split longitudinally to yield two or four such stalks; composed of receptacular and (primarily) gynoecial tissues; esp. in Apiaceae (Umbelliferae). |
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paired |
= conjugate, geminate |
arrangement |
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Inserted by pairs, the members of each fused or not. |
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conduplicate 2 |
= duplicate |
vernation |
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Each leaf folded sharply inward along its longitudinal axis, the adaxial surfaces of each side facing one another. |
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pistillodium pl. pistillodia |
= pistillode |
STRUCTURE |
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Any sterile structure deemed to represent a modified pistil, homology being inferred on the basis of structural similarity, ontogeny, and/or position; sometimes nectariferous, sometimes connate with others or adnate to other floral structures. |
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pyramidal |
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solid shape |
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Transversely triangular or polygonal, broadest at the base and regularly attenuate to an angular apex, all faces essentially plane. |
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elater 1 |
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STRUCTURE |
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An elongate cell with a helical, hygroscopic thickening in its wall, contained within a sporangium, expanding and contracting with changes in humidity and aiding dispersal of the spores; esp. in Hepaticae. |
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runcinate |
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plane shape |
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Basically obovate with a series of retrorse, acute lobes on either side, these diminishing in size toward the base. |
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showy |
< conspicuous |
manifestation |
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Prominently evident and attractive due to size, shape and/or coloration. |
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filiform |
= thread-like |
solid shape |
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Elongate and very slender, basically round in transverse section and of more or less uniform diameter, variously curved over its length or not. See also capillary (capillate, hair-like). |
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standard |
= banner, vexillum |
STRUCTURE |
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The relatively large, erect adaxial (upper) petal in a papilionaceous corolla. |
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glittering |
= splendent |
reflectance |
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Interruptedly glossy (laevigate, lustrous, polished, shining, shiny, and thus sparkling when viewed from changing angles. |
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sword-shaped 2 |
= ensiform |
solid shape |
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Elongate and moderately slender, strongly compressed, the opposite faces plane, parallel, broadest at the base and gradually attenuate to a short, more strongly attenuate, acute apex; like a broadsword blade. |
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horn-shaped |
= corniform |
solid shape |
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Straight or curved and slenderly conic or conoidal, like an animal horn. |
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tubercular |
= tuberculose |
solid shape |
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Comprising small knot-like segments. |
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lacrimiform |
= teardrop-shaped |
solid shape |
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Transversely round and broadest just below the middle, broadly rounded to the base and acutely attenuate to the apex. |
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waxy 1 |
= ceraceous, cereous, waxen; > caesious, glaucescent, glaucous, pruinose |
coating |
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Covered with wax or a wax-like substance. |
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barbed 1 |
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apex |
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Terminated by a small, relatively stiff, acutely reflexed, hook-like structure. |
