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reticulate 1 |
= anastomosing, net-like, netted |
architecture |
tertiary and higher-order laminar veins, excl veinlets |
Interconnecting more or less regularly. |
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reticulate 2 |
= netted |
coloration |
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Having a pattern of interconnected fine lines of contrasting hue and/or intensity. |
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reticulate 3 |
= netted |
relief |
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Having prominulous, more or less regularly interconnected lines. |
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reticulodromous |
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venation |
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Having a single median primary vein that branches to either side along the length of the lamina, the secondary veins running thence toward the margin, branching repeatedly, becoming less distinct, and yielding a dense higher-order reticulum near the margin. |
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retrorse |
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orientation |
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Directed generally backward, toward the proximal end of the context of reference, parallel or at an acute angle to the bearing structure. |
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retuse |
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apex |
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Round overall with an obtuse terminal sinus. |
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revolute 1 |
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margin |
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Rolled inward abaxially. |
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revolute 2 |
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vernation |
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Each rolled abaxially inward from the lateral margins. |
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rhachilla |
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STRUCTURE |
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See rachilla. |
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rhachis |
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STRUCTURE |
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See rachis. |
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rhipidiate |
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architecture |
inflorescence |
Comprising one or more rhipidia. |
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rhipidium pl. rhipidia |
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nominative |
inflorescence |
A cyme with the branches alternate and disposed in two opposite ranks along the main axis, the whole fan-like. |
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rhizoid |
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STRUCTURE |
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Any structure that is similar to a root in appearance and function but that is not a true root ontogenetically and anatomically, especially one produced from a gametophyte thallus. |
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rhizomatous |
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architecture |
plant |
Having rhizomes. |
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rhizome |
= rootstock |
STRUCTURE |
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An underground, usually horizontal stem, often superficially resembling a root but easily distinguished by the presence of nodes, from which it branches exogenously to produce the aboveground portion(s) of the shoot. |
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rhizophore |
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STRUCTURE |
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A stem branch that bears no leaves and from which roots eventually arise; esp. in Selaginellaceae. |
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rhombate |
= rhombic |
plane shape |
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Broadest at the middle and more or less regularly attenuate to either end, the sides angled at the middle and more or less straight from there to either end. |
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rhombic |
= rhombate |
plane shape |
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Broadest at the middle and more or less regularly attenuate to either end, the sides angled at the middle and more or less straight from there to either end. |
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rhomboid |
= diamond-shaped |
solid shape |
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Transversely square, broadest and longitudinally angular at the middle, regularly attenuate to angular ends, all faces essentially plane; like the stylized shape of a diamond. |
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rhytidomal |
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insertion |
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Within, upon, or otherwise directly associated with the bark. |
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rhytidomal |
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position |
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Within, upon, or otherwise directly associated with the bark. |
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rib |
= costa; > midnerve (not recommended), midrib, midvein; >< lateral vein |
STRUCTURE |
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A primary vein of a laminar structure, having a longitudinal course, either medial or lateral, often prominent. See also secondary vein, tertiary vein, veinlet. |
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ribbed 1 |
= costate |
architecture |
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Having one or more ribs (costae). |
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ribbed 2 |
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solid shape |
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Having two or more prominent, elongate, relatively narrow, essentially parallel protrusions that extend over all or most of its length or circumference. |
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ridge |
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FEATURE |
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A very narrow, elongate, relatively low protrusion; esp. on fruits in Apiaceae (Umbelliferae). |
