Sentence examples for rachis from inspiring English sources

The typical feather consists of a central shaft (rachis), with serial paired branches (barbs) forming a flattened, usually curved surface the vane.

The rachis (main axis) of the lamina forks at all or most nodes, with a "dormant bud" between the branches that appears as a short fiddlehead.

At the center of each frond is a shiny, dark brown stem (or rachis), which lends the "ebony" to the ebony spleenwort's name.

They are formed by a weakly developed central shaft (rachis), with alternating smaller branches (barbs) that carry the tiny, hooked barbules that also continue along the surface of the rachis.

The plumage in this coelurosaur differs from that observed in other dinosaurs, which show a reduced rachis with long barbs without any barbules, and DIP-V-15103 adds another morphotype to the diversity of early feathers.

Polyp-free peduncle burrows into soft sediments; polyp-bearing distal end of the polyp (rachis) extends into water and may be completely retractile.

The rachis (central axis) of the pinnately compound leaves is strongly thickened on the underside.

The flower spikelets grow in the angles of a zigzag rachis (flower stem).

An unbranched basal section of the rachis is called the calamus, part of which lies beneath the skin.

The typical contour feather consists of a tapered central shaft, the rachis, with paired branches (barbs) on each side.

It consists of a tapering central shaft, the rachis, to which are attached a large number of tapering parallel barbs.