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pinna pl. pinnae |
< leaflet |
STRUCTURE |
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One of the first-order divisions or leaflets of a pinnate frond; in Polypodiophyta. See also pinnule. |
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pilosulous |
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pubescence |
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Finely pilose. |
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pilose |
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pubescence |
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Bearing relatively sparse, soft, slender, more or less erect capillate trichomes. See also pilosulous. |
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piliferous |
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apex |
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Having a distinct, fine, weak, hair-like portion or protrusion. |
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phyllopodium pl. phyllopodia |
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STRUCTURE |
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A stem-like axis composed of fused leaf bases; esp. in Arecaceae (Palmae), Musaceae. |
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phyllodium pl. phyllodia |
= phyllode |
STRUCTURE |
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A leaf deemed to consist entirely or almost entirely of tissues evolutionarily derived from the petiole, all or a distal portion of which has become laminar, the original blade reduced to the point of absence or vestigiality. |
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phyllode |
= phyllodium |
STRUCTURE |
|
A leaf deemed to consist entirely or almost entirely of tissues evolutionarily derived from the petiole, all or a distal portion of which has become expanded and blade-like, the original blade reduced to the point of absence or vestigiality. |
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phylloclade |
= cladode, cladophyll |
STRUCTURE |
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A stem segment that functions as a leaf; often more or less compressed. |
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phyllary |
= involucral bract; < bract (broad sense) |
STRUCTURE |
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One of the bracts composing the involucre of a capitulum (head); in Asteraceae (Compositae). |
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phanerocotyloid |
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germination |
seed |
Having the cotyledon(s) emerging from the seed coat. |
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petiolule |
< stalk |
STRUCTURE |
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The stalk, when present, of a leaflet, analogous to the petiole of a leaf. |
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petiolulate |
< stalked |
architecture |
leaflet |
Having a petiolule. |
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petiole |
< stalk, stipe (broad sense, not recommended) |
STRUCTURE |
|
The stalk, when present, of a leaf. |
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petiolate |
< stalked |
architecture |
leaf |
Having a petiole. |
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petiolar |
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insertion |
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Upon or otherwise directly associated with the petioles. |
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petiolar |
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position |
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Upon or otherwise directly associated with the petioles. |
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petaloid |
= petal-like |
architecture |
structure |
Resembling a petal in shape, texture and color. |
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petal-like |
= petaloid |
architecture |
structure |
Resembling a petal in shape, texture and color. |
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petal |
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STRUCTURE |
|
One of the one or more constituent members of a corolla; colored and showy in many taxa, inconspicuous in size and/or color in others; may be distinct or else connate with one or more others, and/or may be free or else adnate to one or more other floral structures. |
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perulate |
|
architecture |
bud |
Having outer scales that enclose and protect the embryonic components, from which they differ significantly in texture, shape, size, relief and/or vestiture. See also naked. |
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personate |
= gaping, ringent |
architecture |
corolla |
Bilabiate with the upper lip inwardly arcuate, the lower lip prominent and appressed to the upper at the level of the throat or junction of tube and limb, which is thus normally occluded but which gapes, resembling an open mouth, when the whole is compressed laterally. |
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persistent |
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duration |
structure |
Remaining attached and conspicuous until the bearing structure reaches maturity. |
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perisperm |
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STRUCTURE / SUBSTANCE |
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A genetically diploid (2n chromosomes) nutritive tissue in a seed; containing stored carbohydrate and/or oil utilized by the embryo prior to and especially upon germination; derived from the nucellus. See also endosperm (albumen). |
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peripterous |
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solid shape |
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Alate with a single transversely encircling wing. |
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peripheral |
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insertion |
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Upon or otherwise directly associated with the outer surfaces or regions of a three-dimensional structure. Although use of this term in two-dimensional contexts is technically correct, traditionally the term marginal is preferred in such cases. |
