How To Use Tripinnate In A Sentence

The lower leaves, with very short, sheathing footstalks, are large and spreading, reaching more than a foot in length, broadly triangular in outline and tripinnate.
Fronds eight to eighteen inches long, lanceolate-oblong, tripinnate. The Fern Lover's Companion A Guide for the Northeastern States and Canada
A tripinnate form of this variety discovered at Concord, Mass., by Henry The Fern Lover's Companion A Guide for the Northeastern States and Canada
Stipes three to nine inches tall, blades one to three inches, triangular-ovate, pinnate at the summit, and tripinnate below. The Fern Lover's Companion A Guide for the Northeastern States and Canada
From a systematic point of view these leaves indicate the origin of the water-parsnips from ordinary umbellifers, which generally have bi - and tripinnate leaves. Species and Varieties, Their Origin by Mutation

A more highly developed form of the typical plant, the lower pinnæ being often very broad, and the fronds tripinnate. The Fern Lover's Companion A Guide for the Northeastern States and Canada
It was tripinnate; its secondary stems were placed directly opposite on the midrib, but its tertiary ones in the alternate arrangement; and its leaflets which were also alternate, were as rectilinear and slim as mere veins, or as the thread-like leaflets of asparagus. The Testimony of the Rocks or, Geology in Its Bearings on the Two Theologies, Natural and Revealed
Fronds two to six inches long, triangular-ovate, acute, broadest at the base, tripinnate. The Fern Lover's Companion A Guide for the Northeastern States and Canada
It is a graceful arching fern with fronds that are generally bipinnate, although the basal pinnae are tripinnate.