perfoliate


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perfoliate
perfoliate leaf

per·fo·li·ate

 (pər-fō′lē-ĭt)
adj.
Of or relating to a sessile leaf or bract that completely clasps the stem and is apparently pierced by it.

[New Latin perfoliātus : Latin per-, per- + Latin foliātus, bearing leaves (from folium, leaf; see bhel- in Indo-European roots).]

per·fo′li·a′tion n.

perfoliate

(pəˈfəʊlɪɪt; -ˌeɪt)
adj
(Botany) (of a leaf) having a base that completely encloses the stem, so that the stem appears to pass through it
[C17: from New Latin perfoliātus, from Latin per- through + folium leaf]
perˌfoliˈation n
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.perfoliate - (of a leaf) having the base united around (and apparently pierced by) the stem
unsubdivided, simple - (botany) of leaf shapes; of leaves having no divisions or subdivisions
References in periodicals archive ?
Species similar to Psittacanthus lasianthus, from which it differs by the sympodial, densely puberulous, three-angled stems, ternate leaves, terminal dichasia, perfoliate bracts, a neck-bearing, not inflated corolla densely laciniate on its outer surface and a triangular, ligule on the inside of each petal, a ring-like nectary, and a micropapillose stigma versus percurrent, glabrous, circular stems, paired leaves, axillary dichasia, not perfoliate bracts, a neck-lacking, inflated corolla without laciniae on its outer surface and a finger-like ligule on the inside of each petal, a 4-lobed nectary, and a smooth stigma in P.
Perfoliate Horse Gentian, Feverwort; C = 5; BSUH 16481.
Thus his "cycles of expansion and contraction" account both for the modification of the archetypal leaf (as pistil, stem leaf, calyx, and so forth) and for more contingent phenomena, such as peculiar digressions, eccentric formations such as a perfoliate rose whose blossom is penetrated by its own stem.