rhachis

American  

[rey-kis] / ˈreɪ kɪs /

noun

plural

rhachises, rhachides

1. a variant of rachis.

---

rhachis British  

/ ˈreɪkɪs /

noun

1. a variant spelling of rachis

---

Example Sentences

One spikelet of each pair sterile and shortly pedicelled, the other fertile, sessile and sunk in the rhachis.

From The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee by Gray, Asa

Spikelets 4–8-flowered, glabrous or nearly so; glumes 3–7-nerved; rhachis glabrous, but rough on the edges; awns when present straight; leaves flat and often roughish or pubescent above.

From The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee by Gray, Asa

Spikelets of a single perfect or unisexual or rudimentary flower, in jointed spikes, in pairs at each joint, mostly imbedded in the thick rhachis.

From The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee by Gray, Asa

Perigynium much as in the Montanæ; spike one, staminate above; pistillate flowers few, often remote, usually on a more or less zigzag rhachis; scales prolonged and leaf-like.—Sp.

From The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee by Gray, Asa

Style 3-cleft; spikelets narrow, terete or nearly so, few–many-flowered, the scales closely appressed and the broad wings of the jointed rhachis enclosing the triangular achene.

From The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee by Gray, Asa