erose


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erose

[ē′rōs]
(biology)
Having an irregular margin.
References in periodicals archive ?
Adiantum camptorachis further differs from these species by having flexuous rachises, and erose segment margins.
poiretii, the new species can be distinguished by its flexuose rachises, erose segment margins, and by the pubescence of the laminae abaxially.
5 mm, ovate-lanceolate, dark brown to blackish with narrow, pale brown margins, cells small, elliptical, mostly occluded, margins entire, erose or with a few distinct teeth; fertile leaves unknown; sterile leaves to 120 x 26 cm, erect; petioles to 60 cm long and 4 mm thick, reddish brown to distally stramineous, moderately scaly (but scales often abraded), scales basally similar to those of the rhizomes but these soon grading into a mixture of two types of smaller, paler scales, one 1.
8 mm, loosely appressed, ovate, tan, erose to ciliate; aerophores at pinna bases tuberculiform, dark; costae adaxially stramineous, grooved, moderately scaly, the scales similar to those of the rachis but smaller, abaxially stramineous, densely scaly, the scales similar to the large rachis scales; blades coriaceous, drying pale olive green, slightly paler abaxially, adaxially sparsely scaly, the scales 0.
but that has concolorous, tan, translucent rhizome scales, whitish to pale tan, translucent, entire to erose costal scales, and broader, flat, thinner-textured pinnae.