Crossword-Solution: COSTATE 7 letters, 3 clues 🏆 scrabble score: 9

The pileus is fleshy but tough, shell-shaped, connate behind, longitudinally rough, costate, corrugate, tan-colored, and the margin is strongly incurved.

Etym: [Multi- + costate.] Defn: Having numerous ribs, or costæ, as the leaf of a plant, or as certain shells and corals.

Etym: [Uni- + costate.] (Bot.) Defn: Having a single rib or strong nerve running upward from the base; -- said of a leaf.

Achenes top-shaped, 5-costate, villous; pappus of 5--10 long thin scales, awn-tipped by the excurrent nerve.--Erect herbs with alternate leaves and large showy heads of yellow or purplish fragrant flowers on terminal or scapiform peduncles.

Stout and tall, 2--3° high; culm sharply angled, rough above; leaves very numerous, flat and very rough, but not hairy, much exceeding the culm; spikes 2--5, scattered, the lower stalked and more or less spreading, long and heavy (1--4´) but loosely flowered at base; perigynium long-ovate, many-costate, sparsely short-hairy, about twice as long as the membranaceous, acute or acuminate scale.--Marshes; frequent.--Var.