Month: October 2020
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Ray-florets or ligulate-florets
The (usually) strap-shaped spreading florets found in some of the Daisy family, occurring either around the edge of the flower-head (as in a Daisy) or forming the whole of the flower-head (as in a Dandelion).
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Pinnatisect leaf
A leaf± deeply cut into pinnately-arranged lobes, cut almost to its midrib.
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Pinnatifid leaf
A leaf± deeply cut into pinnately-arranged lobes, but not cut right to its midrib, the lobes remaining connected by at least a narrow flange of leaf-blade bordering the midrib.
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Pinnate veins
With secondary veins along each side of the midrib, running parallel towards the leaf margin, like teeth of a comb, or sometimes re-joining to form a network.
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Pinnate leaf
A compound leaf with the separate leaflets arranged along central axis in a feather-like arrangement. The leaf-stalk, usually in opposite pairs, and often with a terminal leaflet as well.
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Perianth segments
The sepals and /or petals t hat make up the perianth of a flower (used mostly either w hen they are indistinguishable, or there is only one whorl).
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Parallel veins
Veins that remain± the same distance apart along much of the leaf, running from the leaf-base to its tip.
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Palmately-lobed leaf
A lobed leaf with the main veins all radiating from the t op of the stalk.
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Oval leaf
A leaf broadest in the middle and about twice as long as broad.
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Ovate leaf
A leaf with its broadest part above the middle, tapering suddenly to its± blunt tip, and more gradually to its base. A leaf± egg-shaped in outline, broadest at the base and about twice as long as broad. Oval in shape.