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stomium pl. stomia |
= stomatal pore |
FEATURE |
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The opening in the wall of a sporangium, between the lip cells, through which the spores exit; in Psilotophyta, Lycopodiophyta, Equisetophyta, Polypodiophyta. |
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gynoecium pl. gynoecia var. gynaecium |
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STRUCTURE |
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The pistil(s) of a single flower together with any ontogenetically equivalent or subordinate structures present, taken collectively; the total female (ovule-producing) structural complement of a single flower. It may include one to many pistils, each simple or compound. |
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leaf-opposed |
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insertion |
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Nodal and directly opposite the leaf. |
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muscariform |
= broom-shaped, penicillate |
solid shape |
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Having a proximal axis that bears a distal cluster of elongate slender branches or appendages, these variously ascending to erect; like a broom. |
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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. |
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palea 2 pl. paleae, paleas |
= pale, palet |
STRUCTURE |
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The distal bract of the (usually) two that immediately subtend the flower in a grass (Poaceae) spikelet; the other is the lemma. |
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conic(al) |
= cone-shaped |
apex |
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Transversely round, essentially triangular in median longitudinal section, and broadest proximally. See also obconic(al). |
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pitcher-shaped |
= ascidiform |
solid shape |
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Having a more or less tubular, radially or bilaterally symmetrical body closed at the base and broadening toward a more or less open apex sometimes lidded or overarched by a prolongation of one side; like a pitcher. |
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quincunx |
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aestivation |
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Imbricate in one whorl of five members, two wholly exterior, two wholly interior, and one partially exterior and partially interior. |
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elongate |
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plane shape |
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Longer in one dimension than in any other. |
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saccate 2 |
= bag-shaped, pouch-shaped, sack-shaped |
solid shape |
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Irregularly obovoid with an exterior aspect intermediate between inflated and flaccid; like a closed pouch or bag. |
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sigmoid 2 |
= S-shaped |
solid shape |
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Elongate with more or less constant width or diameter and curved more or less regularly first in one direction and then in the opposite direction, like the letter S. |
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firm |
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texture |
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Yielding under only moderately strong pressure; only slightly deformable without internal structural disruption. |
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stem |
> cane, culm |
STRUCTURE |
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The entire axial system of a shoot, or a component, primary or higher-order (branch) axis of the shoot; differentiated anatomically and morphologically into nodes and internodes, from the former of which it branches exogenously and bears leaves, bracts, and/or inflorescences; usually growing above ground level, but sometimes structurally and functionally specialized and growing underground (e.g., rhizome, tuber) or upon the surface of the ground (e.g., stolon). Although sometimes phenotypically distinctive and often treated separately for descriptive purposes, the axial system of an inflorescence, excluding pedicels or parts of them in some cases, is properly stem in the above general sense. |
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hydathode |
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STRUCTURE |
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A multicellular, anatomically distinctive structure located within a leaf at its periphery, its cells surrounding a central canal that opens to the exterior, through which water is actively discharged under humid conditions that impede the rate of transpiration; this liquid discharge is termed guttation. |
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laevigate 2 |
= glossy, lustrous, polished, shining, shiny |
reflectance |
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Uniformly reflecting a high proportion of incident light at all angles. |
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tubiform |
= trumpet-shaped |
solid shape |
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Obteretely tubular with a relatively short distal flare (the limb if a perianth, calyx, or corolla). |
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lageniform |
= ampulliform, flask-shaped |
solid shape |
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Generally circular in cross-section, broadest at or below the middle, approximately globose below that and constricted above to a relatively narrow neck; like a flask. |
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whip-like |
= flagelliform |
solid shape |
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Very slender, terete, generally straight, and apparently supple. |
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…angled |
= …gonous |
solid shape |
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Elongate with the number of longitudinal angles indicated by the prefix, the intervening sides transversely flat or curved; as in four-angled. See also …angular (…gonal), deltoid, obdeltoid, triquetrous. |
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barbellule |
= barbellula |
STRUCTURE |
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A small barbel (barbella); a very diminutive barb. |
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moniliform |
= beaded |
solid shape |
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Elongate, relatively slender, transversely round, and more or less regularly constricted over its length, the whole straight or variously curved; like a necklace of beads. |
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cap cell |
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STRUCTURE |
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The single cell, or one of the several cells, forming the uppermost (distal) portion of an antheridial wall. |
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one-sided 3 |
= unilateral |
position |
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Upon or arising from one side only of the bearing structure. |
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petiole |
< stalk, stipe (broad sense, not recommended) |
STRUCTURE |
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The stalk, when present, of a leaf. |
