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bracteole 2 |
= bractlet, prophyll(um); < bract |
STRUCTURE |
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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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nodiform |
= gongylodate, gongyloid, knob-shaped, knot-shaped |
solid shape |
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Approximately globose, the surface convoluted or not, like a knob or knot; usually applied only to structures or components that are relatively small. |
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chalaza pl. chalazae, chalazas |
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STRUCTURE |
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The basal (proximal) portion of an ovule, adjacent to its junction with the funiculus. |
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parallelodromous |
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venation |
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Having two or more primary veins that run more or less parallel to one another over most of the laminar length and converge near the apex. |
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corniform |
= horn-shaped |
solid shape |
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Straight or curved and slenderly conic or conoidal, like an animal horn. |
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pollen sac |
= theca |
STRUCTURE |
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Any of the one, two or four ontogenetically distinct, pollen-producing sectors (microsporangia) of an anther. In some taxa the walls between pairs of adjacent thecae break down as an anther approaches maturity, the mature anther thus ultimately containing half as many locules as thecae. |
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raphe |
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STRUCTURE |
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That portion of the funicle adnate to the integument of an anatropous ovule; represented by a longitudinal ridge or other discontinuity in the surface and/or color of the testa on one side of the mature seed. |
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epigeal |
= epigeous |
location |
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Upon or very near the surface of the ground; esp. of cotyledons following seed germination. |
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scalloped |
= crenate |
margin |
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Having regularly alternating, rounded convexities and concavities oriented more or less perpendicular to the generalized perimeter. See also sawtoothed (serrate), small-sawtoothed (serrulate), small-scalloped (crenulate), small-toothed (denticulate), toothed (dentate). |
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floral |
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insertion |
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Upon, within, or associated with the flowers. |
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soft |
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texture |
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Yielding under slight pressure. |
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stomatiferous |
= stomate-bearing |
architecture |
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Having stomates present in the epidermis. |
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apex pl. apices |
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CHARACTER |
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Configuration of the uppermost, distal, or terminal portion of a structure, its extent determined somewhat subjectively in relation to the shape of the structure as a whole. The concept of apex varies from one descriptive context to another, since the apex is not a clearly delimited, morphologically distinct entity. The terms for describing apical condition are not strictly coordinate logically — some are more inclusive than others, some describe conditions involving what can be regarded as appendages, and some refer to the apex in a developmental as well as a strictly topological sense — and precise characterization may require using more than one descriptor. The semantic antecedent of some descriptors is "apex," whereas the antecedent of others is the structure as a whole (e.g., leaf ). |
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palea 1 pl. paleae, paleas |
= pale, palet, receptacular bract |
STRUCTURE |
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A small papery (chartaceous) to membranous bract borne on the compound receptacle (torus) of a capitulum (head) in Asteraceae (Compositae). |
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congested |
= compact, crowded |
architecture |
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Having equivalent constituent parts disposed very near to one another. |
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quadr(i)… |
= four-…, tetra… |
prefix |
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Indicating presence of or constitution by four entities of the type denoted by the term's stem; as in quadrangular, quadrilocular. |
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elliptic(al) 2 |
= oval |
plane shape |
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Elongate, widest at the middle, and symmetrically convex-attenuate to rounded ends. See also oblong. |
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fine-pitted |
= foveolate, scrobiculate |
relief |
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Finely pitted (foveate). |
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sigmoid 1 |
= S-shaped |
course |
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Curved more or less regularly first in one direction and then in the opposite direction, like the letter S. |
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glochidium pl. glochidia |
= glochid; < bristle, capillus, hair, seta, trichome |
STRUCTURE |
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A capillus (hair) or bristle (seta) that bears one or more barbs; esp. in Cactaceae. |
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stellate 3 |
= star-shaped |
solid shape |
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Having a distal aspect like the stylized shape of a star; stipitate or sessile with elongate branches or appendages radiating widely in three dimensions from a common point at the apex of the proximal axis or, when sessile, upon the bearing surface. |
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hyaline |
= pellucid; > translucent, transparent |
coloration |
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Transmitting light uniformly. |
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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. |
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laevigate 1 |
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relief |
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Very smooth. |
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barbellula pl. barbellulae |
= barbellule |
STRUCTURE |
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A small barbel (barbella); a very diminutive barb. |
