bitegmic

bitegmic

[bī′teg·mik]
(botany)
Having two integuments, especially in reference to ovules.
References in periodicals archive ?
Both species have bitegmic and anatropous ovule, obturator, trichomes and a resinuous gland, which is composed of flange-like structures that are modified bractlets (Webster and Webster, 1972).
alata are anatropous, subglobose, bitegmic, and crassinucellate, with a narrow conical nucellus (see Figure 4D, E).
mollissma were anatropous bitegmic and crassinucellate.
mollissima was the same as those reported for other species of in terms of the anatropous bitegmic and crassinucellate ovules and the Polygonum type embryo sac (Xu et al.
2011) consider Hylocereus ovules as amphitropous, bitegmic and crassinucellate, which during mega-gametogenesis and embryogenesis show abnormalities, suggesting apomixes.
showing that the ovules are bitegmic, the inner integument has no vascular bundles, and the seeds are exotegmic.
The seed originates from anatropous, bitegmic, crassinucellate ovule.
Microdiptera (in the broadest sense) is morphologically and anatomically similar to Decodon, sharing the following characteristics: anatropous ovules, bitegmic seeds with inner lignified layers typical of the Lythraceae, a germination valve on one side of the seed, and extensive spongy tissue through which the raphe runs from near the hilum to the chalaza.
The ovary is monocarpellate and the mature ovule is anatropous, bitegmic and crassinucellate.
undulatus is anatropous, bitegmic and crassinucellate consistent with Fabaceae family.
Furthermore, most tenuinucellate dicotyledons are also unitegmic, as Dablgren (1975) noted, whereas the majority of "primitive" dicotyledons and monocotyledons have bitegmic ovules (Endress, 1990, 1994; Dahlgren & Clifford, 1982).
The plesiomorphic conditions in monocotyledons are generally considered to be bitegmic and crassinucellate (e.