Sentence examples for a midrib from inspiring English sources

The thallus, or flat, gametophyte, usually lacks a midrib.

Leaves diverge outward from the shoot; rigidity results from water pressure within the cells or from the support of a midrib, when present.

Veins concentrated in the medial region of the pinnule curve toward the lateral margin, suggestive of an early stage in the evolution of a midrib.

The more numerous "leafy" liverworts superficially resemble mosses, but most notably differ in having lobed or divided leaves that are without a midrib and are positioned in three rows.

The leaf undersurface is white, with a midrib.

The lower surface of the leaf has a midrib covered in fine pale brown hair.

True myrtles have a central midrib and a major vein just inside and parallel to the leaf margin.

Dorsal petal 12.5 13.5 mm long, 11.6 12.3 mm wide, orbicular, apex rounded, base broadly cuneate and abruptly constricted into a stalk, midrib obvious, with a slight dorsal crest.

The moss gametophyte possesses leaflike structures (phyllids) that usually are a single cell layer thick, have a costa (midrib), and are spirally arranged on a stemlike axis (caulid).

The leaf of the remarkable genus Cymophyllus from the eastern United States appears to be a broad, flat blade without a sheath, midrib, or ligule; however, the apparent blade is evidently an expanded and opened bladeless sheath.

A spear arrangement with a (3̄32) midrib is also observed.