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sinus pl. sinus, sinuses |
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FEATURE |
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The space, indentation, or invagination (or, for some descriptive purposes, the outline thereof) between and delimiting any two consecutive or adjacent lobes or teeth of a structure. |
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granuliferous |
= powdery, pulverulent |
coating |
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Covered with a more or less even deposit of fine, dry particles. See also lentiginous (dusty, lentiginose), which is not clearly distinct in its application. |
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taeniate |
= tapeworm-shaped |
solid shape |
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Slender, elongate, basically cylindric or compressed-cylindric with shallow, narrow, more or less regular constrictions along its length, the whole apparently segmented and straight or variously curved. |
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lanuginose |
< cottony |
pubescence |
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Bearing relatively long and fine, intertwined, somewhat matted, capillate trichomes. |
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woody |
= ligneous |
texture |
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Of or resembling wood (xylem). |
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beak 2 |
= rostrum |
STRUCTURE |
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The inner, horn-like segment of a coronal lobe; esp. in Asclepiadaceae. |
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mound-shaped |
= cushion-shaped, pulvinate, pulviniform |
solid shape |
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Essentially round in transverse section, much broader than long or high, with a convex distal face that intersects either a more or less plane proximal face or, when the structure is sessile, its bearing surface. |
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carinate |
= keeled |
solid shape |
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Having an elongate median longitudinal ridge that is basically triangular in transverse section, resembling the keel of a boat; esp. a leaf blade or sheath, glume, lemma, palea, sepal or petal. |
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ovary |
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STRUCTURE |
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The proximal portion of a pistil (either simple or compound) within which the ovules are borne; usually of somewhat greater diameter and/or volume than the remainder of the pistil. |
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complex |
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architecture |
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Comprising two or more basic structural entities, at least two of which are dissimilar. |
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pinnatifid |
> pinnatisect; < pinnate |
plane shape |
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Pinnately divided. |
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cymbiform |
= boat-shaped, navicular |
solid shape |
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Like the generalized form of a boat hull, the walls relatively thin to moderately thick, the interior essentially empty and open along one side. |
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punctate 2 |
= dotted |
relief |
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Having small, round, shallow depressions or low protrusions. See also puncticulate (small-dotted). |
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eccentric |
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position |
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Having a center or axis of symmetry not coincident with that of the context of reference. |
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rough 1 |
= scabrous |
pubescence |
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Of or bearing coarse, stiff, ascending, trichomes and markedly rough to the touch. |
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fibrous |
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texture |
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Having tough, woody or sclerotic strands distributed through a softer matrix. |
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sharp |
= acute |
apex |
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Acutely angular; regularly and more or less straightly attenuate to an angular tip, the sides intersecting at an angle of less than 90°. |
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glabrate |
= near-bald |
pubescence |
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Nearly glabrous, with only a very sparse covering of trichomes. |
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stalkless |
= exstipitate, sessile, unstalked |
architecture |
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Lacking a stalk, thus inserted ("sitting") directly upon the bearing structure. |
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suprafoliar |
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insertion |
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Upon the stems, each directly above (distal to) and very near a point of leaf insertion. |
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knobby |
= knotty, nodose |
solid shape |
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Having knob-shaped (gongylodate, gongyloid, knot-shaped, nodiform) protrusions. See also nodulose. |
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viviparous |
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reproduction |
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Producing sexually or asexually generated offspring that begin growth and development while borne upon the parent plant. |
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anadromous |
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venation |
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Having the first lateral vein in each pinna or primary segment of the frond arise from its midvein on the side toward the apex of the frond, the pinnule or secondary segment that it leads to often disproportionately larger than the next distal ones. |
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axis pl. axes |
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STRUCTURE |
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Any unitary and longitudinally continuous structure that bears laterally the subordinate portion(s), if any, of a plant root or shoot or any subdivision thereof and that represents the main line of structural development and/or symmetry distal to its origin, irrespective of the particular ontogenetic growth pattern involved. See also primary axis. |
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mesochilium |
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STRUCTURE |
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The central portion of a labellum (lip) that has distinct proximal, distal, and central parts; in Orchidaceae. See also epichilium, hypochilium. |
