pentamerous


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pentamerous

[pen′tam·ə·rəs]
(botany)
Having each whorl of the flower consisting of five members, or a multiple of five.
References in periodicals archive ?
The corolla is also pentamerous with small, coriaceous, concave, acuminate petals whose free portions measure between 1.
The flowers are pentamerous, with a shallow, thick, well developed hypanthium, semicircular (U-shape) to cupulate in shape (Fig.
Corolla merosity: trimerous = 0; tetramerous = 1; pentamerous = 2; hexamerous = 3; octamerous = 4.
brongniartii does show some solanaceous characters such as the pentamerous rotate corolla with reflexed corolla lobes (petals) and the stamens with long anthers and short filaments.
Similarities between flowers of Adenanthemum Conwentz and Itea include that the flowers are hermaphroditic, pedicellate, have a pentamerous and actinomorphic perianth with distinct whorls of sepals and petals, a valvate corolla, a haplostemonous androecium with antesepalous stamens, dorsifixed anthers with introrse dehiscence, a superior ovary (ovary position is variable in Itea), two fused styles, and a single, capitate stigma (Conwentz, 1886; Kubitzki, 2007a).
Flower erect to pendulous, arising on a ebracteate stalk directly from the leaf rosette (monochasium with condensed internodes), rarely subsessile or pedicel (2-) 3-10 (-20) cm long during anthesis, pentamerous.
The dimerous gynoecium in Apiaceae can have a superimposed pentamerous symmetry from the other floral whorls and thus be monosymmetric (instead of disymmetric).
The most common pattern is pentamerous flowers with an upper lip of two and a lower lip with three petals, and the odd stamen posterior (adaxial) (Donoghue et al.
Monosymmetric flowers occur in Columellia, which have two stamens but otherwise pentamerous whorls (Stern et al.
In this case features of the pentamerous symmetry of the other floral whorls are super-imposed on the gynoecium (see also chapter "Transient monosymmetry").