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raphal |
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derivation |
aril |
Produced or resulting from a modification of the raphe. |
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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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raphides sing. raphis |
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STRUCTURE |
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Needle-like crystals of calcium oxalate contained within the cells of some plants; esp. in Araceae. |
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ray 1 |
< primary axis |
STRUCTURE |
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A first-order axis within a compound umbel. |
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ray 2 |
= lamina |
STRUCTURE |
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The distal, relatively flat portion of the corolla of a ray floret, terminating in 0--4 teeth or lobes; in Asteraceae (Compositae). |
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ray floret |
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STRUCTURE |
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A floret that has a zygomorphic corolla, is pistillate (either fertile or sterile) or neuter, and is borne in a radiate capitulum (head) peripheral (proximal) to the disc florets; in Asteraceae (Compositae). |
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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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receptacle 2 |
= torus |
STRUCTURE |
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The short, expanded, compound axial structure surmounting a peduncle and basal to two or more flowers, or to the florets of a capitulum (head) in Asteraceae (Compositae), where it may bear paleae (receptacular bracts), scales, bristles, trichomes, or subulate enations, and may be smooth or variously pitted (alveolate, foveolate). |
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receptacular |
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insertion |
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Upon, arising from, or otherwise directly associated with the receptacle. |
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receptacular |
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position |
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Upon, arising from, or otherwise directly associated with the receptacle. |
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receptacular bract |
= pale, palea, palet |
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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reclinate |
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vernation |
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Each with its blade oriented downward and parallel to the proximal portion of its distally recurved petiole. |
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reclining |
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habit |
axis |
Inserted above substrate level and recurved, the distal portion procumbent. |
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rectangular |
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plane shape |
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Basically four-sided, the sides more or less straight, those of each opposing pair more or less parallel, the generalized angles between adjacent sides approximately 90°. |
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recurved |
= arching |
orientation |
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Curving outward (abaxially), downward, or backward. |
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reduced |
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size |
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Unusually or unexpectedly small. |
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reflectance |
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CHARACTER |
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Aspect as to proportion and pattern of incident light reflected from the surface. |
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reflexed |
= deflexed |
orientation |
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Abruptly bent outward (abaxially), downward, or backward at some point along its length. |
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regular |
= actinomorphic |
architecture |
perianth, calyx, corolla |
Radially symmetric; divisible into two essentially equal portions along any median longitudinal plane. See also peloric. |
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relief |
= sculpture |
CHARACTER |
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General topographic aspect of a surface. Overlaps conceptually with solid shape. |
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remote |
= distant |
arrangement |
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Disposed relatively far from one another along the axis. |
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reniform 1 |
= kidney-shaped |
plane shape |
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Broadly elongate and arcuate, each end bluntly rounded; like the generalized outline of the broad face of a human kidney. |
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reniform 2 |
= kidney-shaped |
solid shape |
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Thickly elongate and arcuate, circular or compressed-circular in transverse section, each end bluntly rounded; like the generalized shape of a human kidney. |
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repand |
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margin |
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Gently or shallowly sinuate. |
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repent |
= creeping |
habit |
axis |
Procumbent and rooting adventitiously at intervals along its length. |