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Raceme |
A long cluster of stalked flowers along a central stem with the older flowers at the base. E.g. Cuckoo Flower. |
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Radial Growth |
Growth from the centre of a fungal colony |
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Range |
The geographical area occupied by a species or subspecies. |
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Ray-floret |
Flat strap-like flower occupying the peripheral ring of a composite flower (compare with disc-floret), as in the white part of a Daisy. |
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Receptacle |
Swollen part of a stem to which the flower is attached. |
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Rectrices |
Tail feathers; the stiff main feathers of a bird's tail, used to control the direction of flight. Alternative spelling - retrices. |
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Recurved |
Bent back |
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Recurved |
Curving backwards. |
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Reflexed |
Turning sharply back or upwards |
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Reniform |
Kidney-shaped |
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Repent |
Creeping or prostrate |
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Resilin |
A rubbery protein in the base of the wing, proboscis, or other pliable sites in the exoskeleton. |
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Resting spore |
A spore that is in a state of dormancy, or having a prolonged survival potential |
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Resupinate |
Lying flat against the substrate, upside-down, with pore-bearing laye outwards |
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Reticulate |
A net like pattern of ornamentation |
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Reticulum |
A network of raised ridges found on the surface of the stem or spores of certain mushrooms |
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Rhizoid |
Root like structure |
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Rhizome |
Under ground stem such as in the Iris. |
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Rhizomorph |
Cord-like structure comprising of a mass of hyphea |
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Rhomboid |
Leaf shaped like a parallelogram with adjacent sides of unequal length. |
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Ring |
Remains of partial veil |
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Ring zone |
Faint mark where ring has been |
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Rosette |
Radiating arrangement of leaves at ground level. E.g. Bucks-horn Plantain. |
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rugose |
Coarsely wrinkled. |
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rugulose |
Finely wrinkled. |
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Rump |
See "pyga". |
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Runner |
Above-ground horizontal stem, often rooting at the nodes. E.g. Trailing Tormentil. |
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