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corniculum pl. cornicula |
= horn |
STRUCTURE |
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A straight or curved, slenderly conic or conoidal protrusion or terminal portion that resembles an animal horn. |
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pollen |
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STRUCTURE |
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Collectively, the spores or grains produced within the thecae of anthers, each containing a very small microgametophyte (or its evolutionary homologue); serving as disseminules from which microgametes are released after transport to a receptive micropylar pollen droplet (in Pinophyta) or stigma (in Magnoliophyta) by a variety of vectors, notably wind, water, insects, bats, and birds. |
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epidermis pl. epidermides, epidermises |
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STRUCTURE |
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The anatomically distinct, outermost, living tissue that encloses and protects the other tissues of a plant organ or part, usually overlaid by an exuded waxy cuticle; resulting from primary growth, disrupted and shed as a consequence of secondary growth if that occurs; consisting mainly of cells not further specialized, otherwise including various types of more specialized cells associated with trichomes and stomates. |
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scallop |
= crena |
FEATURE |
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A rounded, marginal convexity or concavity in a series of such that alternate regularly and are oriented more or less perpendicular to the generalized perimeter of a laminar structure. See also sawtooth, sawtoothlet, scalloplet (crenule), tooth (dens), toothlet. |
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stomate-bearing |
= stomatiferous |
architecture |
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Having stomates present in the epidermis. |
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inconspicuous |
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manifestation |
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Not prominently evident. |
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tepal |
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STRUCTURE |
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Any member of an undifferentiated perianth; may be green and foliaceous or colored and petaloid, distinct or else connate with one or more others, and/or free or else adnate with one or more other floral structures. |
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umbrella-shaped |
= umbraculiform |
solid shape |
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Having a slender, elongate proximal axis and a very broad, meniscoid distal portion, the latter oriented with its convex face distal; like an umbrella. |
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scabrellous |
= scabrellate, scabridulous |
relief |
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Minutely scabrous (rough, scabrate, scabrid, scabridous). See also spiculate, which is not clearly distinct in its application. |
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biconvex 2 |
= lens-shaped, lenticular |
solid shape |
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Relatively thin with two round, convex, opposite broad faces intersecting acutely at the circumferential edge; like a double-convex lens. See also disciform (discoid), meniscoid. |
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muriculate |
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relief |
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Finely muricate. |
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pale 2 |
= palea, palet |
STRUCTURE |
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The upper or distal of the (usually) two distinctive bracts immediately subtending the flower in a grass (Poaceae) spikelet. |
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cone-shaped |
= conic(al) |
solid shape |
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Transversely round, essentially triangular in median longitudinal section, and broadest proximally. See also obconic(al). |
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decompound |
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architecture |
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Comprising two or more orders of equivalent substructural entities; multiply compound. |
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S-shaped 2 |
= sigmoid |
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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fine-fringed |
= fimbrillate |
margin |
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Finely fringed (fimbriate). |
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sickle-shaped 2 |
= falcate |
solid shape |
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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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glochidiate |
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pubescence |
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Bearing glochids (glochidia). |
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stellate 2 |
= star-shaped |
plane shape |
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Having four or more intersecting radiate lobes or portions, each distally slender; like the stylized outline of a star. |
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husk |
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STRUCTURE |
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A more or less dry, hard or fibrous, simple or compound enclosure or outer layer of a seed, fruit or inflorescence. |
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symmetric(al) 1 |
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plane shape |
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Divisible into essentially equal halves along one or more lines or planes. |
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laesura pl. laesurae |
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FEATURE |
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An elongate aperture in the proximal face of a spore at or near its pole, coterminous with a tetrad scar; in Psilotophyta, Lycopodiophyta, Equisetophyta, Polypodiophyta. Depending upon tetrad configuration and resultant scar pattern, a laesura may be either unbranched or branched, the branches when present (usually 3) radiating from the pole and of approximately equal lengths. |
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tuberoid (root-stem) |
= dropper |
STRUCTURE |
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An axial outgrowth that descends from a bulb and eventually forms a new bulb; esp. in Orchidaceae. |
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wedge-shaped 2 |
= cuneate, obtriangular |
plane shape |
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Inversely triangular; like the outline of the broad lateral face of a wedge, broadest at the apex. See also obdeltate. |
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barbellula pl. barbellulae |
= barbellule |
STRUCTURE |
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A small barbel (barbella); a very diminutive barb. |
