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arillus pl. arilli |
= aril (strict sense); < aril (broad sense) |
STRUCTURE |
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An appendicular structure that wholly or partly envelops a seed and is an outgrowth from the funicle or raphe, and thus is ontogenetically derived from the placenta; usually fleshy or pulpy, sometimes spongy or tufted-capillate, often brightly colored. |
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macula pl. maculae |
= blotch, spot |
FEATURE |
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An area that differs in color from the rest of a structure's surface, usually due to differing coloration. See also eyespot. |
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chartaceous |
= papery, papyraceous |
texture |
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Very thin, flexible, and readily torn; like paper. See also membranaceous (membranous), pergamentaceous (parchment-like). |
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coronal |
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insertion |
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Upon or otherwise directly associated with the corona. |
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receptacle 1 |
= torus |
STRUCTURE |
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The relatively short, simple, axial structure surmounting a pedicel and basal to the flower, usually broader than the pedicel. |
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epipetalous |
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position |
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Upon the petals, or partially adnate thereto and apparently arising therefrom. |
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floret |
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STRUCTURE |
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A very small, structurally specialized flower, especially when occurring in capitulum (head; Asteraceae), or in a spikelet (Poaceae), where it includes the immediately subtending bracts (lemma and palea). |
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gynostemium pl. gynostemia |
= column, gynandrium |
STRUCTURE |
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A central floral structure consisting of the partly to wholly fused (connate and adnate) androecium and gynoecium; esp. in Orchidaceae. |
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strap-shaped |
= liguliform, lorate |
solid shape |
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Elongate and relatively thin with the opposite faces more or less plane and moderately narrow, their edges more or less straight and parallel over most of their length; resembling a strap. |
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indument |
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STRUCTURE / SUBSTANCE |
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See indumentum. |
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terminal |
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position |
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Apical and with the same developmental axis as the whole, of which it is the distalmost portion or appendage. |
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unctuous 2 |
= greasy, oily, oleaginous |
texture |
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Liquid or deformably solid, cohesive, and slippery to the touch. |
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abrupt |
= truncate |
apex |
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Having a distal boundary that is generally straight or plane and approximately perpendicular to the central axis. |
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apiculum 1 pl. apicula |
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STRUCTURE |
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A short, slender, angular tip that is not notably harder or stiffer than the main body of the bearing structure. See also mucro. |
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…lobate |
? …cleft, …fid, …lobed, …parted, …partite, …segmented |
plane shape |
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Having the number of lobes indicated by the prefix; as in bilobate. |
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bifurcate |
< forked, furcate |
solid shape |
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Having two terminal, antrorse branches or divisions arising from a common point or level, like the prongs of a fork. |
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palet 2 |
= pale, palea |
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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placenta pl. placentae, placentas |
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STRUCTURE |
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An ovule-bearing zone of the tissue surface bordering an ovary locule; of merely topographic, not histological, significance; may be a part of the ovary wall proper or an extension from it, or a part of the central axis of the ovary or an extension from it. |
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dehiscence |
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CHARACTER |
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Mode of opening (splitting or forming apertures). |
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embryo |
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STRUCTURE |
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The rudimentary spermatophyte contained within a viable seed. |
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sagittate 2 |
= arrowhead-shaped |
plane shape |
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Generally triangular, tapering gradually from the base to an acute apex, the base with a relatively large, acute, retrorse lobe to either side; like the outline of the broad lateral face of an arrowhead. |
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fistulose |
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solid shape |
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Basically tubular with closed ends. |
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silky |
= sericeous |
pubescence |
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Of or bearing long, fine, appressed, capillate trichomes and like silk to the touch. |
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glossy |
= laevigate, lustrous, polished, shining, shiny |
reflectance |
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Uniformly reflecting a high proportion of incident light at all angles. |
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hypanthium 2 (strict sense) pl. hypanthia |
= floral cup (strict sense) |
STRUCTURE |
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A marginal protrusion from or enlargement of the receptacle (torus) of a flower, encircling and wholly, partly or not at all adnate to the gynoecium, bearing the perianth and androecium. |
