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pappus scale |
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STRUCTURE |
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A pappus element that is more or less planate and relatively thin and broad; may terminate in one or more awn- or bristle-like appendages. |
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pappus pl. pappi |
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STRUCTURE |
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A set of one or more awns (aristae, bristles, setae) or scales at the summit of an inferior ovary just beneath or outside the free portion of the corolla; persisting in the fruit (cypsela) and often aiding wind or animal dispersal; in Asteraceae (Compositae). Considered by some to be an evolutionarily modified upper calyx portion, the lower portion having been incorporated into the floral tube casing adnate to the ovary wall; considered by others to be an outgrowth from the ovary wall. |
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pappose |
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architecture |
flower, fruit |
Bearing a pappus; esp. in Asteraceae (Compositae). |
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papillose |
= papillate |
relief |
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Having small, conoidal protrusions overall; appearing pimply. |
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papilliform |
= papillar(y) |
solid shape |
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Small, conoidal, and protruding from a larger structure; resembling a pimple; esp. trichomes. |
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papillate |
= papillose |
relief |
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Having small, conoidal protrusions overall; appearing pimply. |
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papillar(y) |
= papilliform |
solid shape |
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Small, conoidal, and protruding from a larger structure; resembling a pimple; esp. trichomes. |
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papilla pl. papillae |
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FEATURE |
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A small, conoidal protrusion resembling a pimple. See also pustule (blister, bulla). |
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papilionaceous |
= butterfly-like |
architecture |
corolla |
Having a relatively large, erect adaxial (upper) petal (the standard, banner or vexillum), two smaller lateral petals (the wings or alae), and two individually smaller but connate or coherent abaxial (lower) petals that together form a carinate structure (the keel or carina), the whole loosely resembling a butterfly with wings spread. |
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papery |
= chartaceous, papyraceous |
texture |
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Very thin, flexible, and readily torn; like paper. See also membranaceous (membranous), pergamentaceous (parchment-like). |
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pannose |
< felted |
pubescence |
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Bearing closely intertwined, capillate trichomes that form a dense, felt-like mat. See also panniform. |
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panniform |
< felted |
pubescence |
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Of closely intertwined, capillate trichomes that form a dense, felt-like mat. See also pannose. |
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paniculiform |
= panicle-like |
architecture |
capitulescence, inflorescence |
Resembling a panicle, but not strictly such. |
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paniculate |
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architecture |
inflorescence |
Comprising one or more panicles. |
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panicle-like |
= paniculiform |
architecture |
capitulescence, inflorescence |
Resembling a panicle, but not strictly such. |
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panicle |
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nominative |
inflorescence |
A compound (branched) raceme, the elongate main axis either determinate or indeterminate, its lateral branches racemose. |
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pandurate |
= fiddle-shaped |
plane shape |
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Basically obovate but with deep, rounded sinuses opposite one another in the proximal half; like the frontal outline of an inverted fiddle body. |
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palmatipinnate |
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architecture |
foliaceous structure |
Compound with two orders of leaflets, the first order palmate, the second pinnate. |
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palmatifid |
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plane shape |
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Palmately lobate; having three or more lobes whose longitudinal axes radiate from a common point. |
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palmatifid |
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solid shape |
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Palmately lobate; having three or more lobes whose longitudinal axes radiate from a common point. |
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palmate |
= digitate |
architecture |
foliaceous structure |
Compound with one order of leaflets all inserted at a common point and diverging from one another; or lobed (cleft, divided, parted, segmented), incised or ribbed in a similar hand-like pattern. Unless qualified to indicate otherwise, this term usually is understood to mean "palmately once-compound." See also …palmate, palmatifid, palmatipinnate, ternate. |
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pallid |
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coloration |
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Relatively pale; not strongly colored. |
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palinactinodromous |
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venation |
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Compound actinodromous, with higher-order branch radiations above the level of and similar to the primary one. |
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palet 2 |
= pale, palea |
STRUCTURE |
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The upper or distal of the (usually) two distinctive bracts immediately subtending the flower in a grass (Poaceae) spikelet. |
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palet 1 |
= pale, palea, receptacular bract |
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). |
