involucral

American  

[in-vuh-look-ruhl] / ˌɪn vəˈluk rəl /

adjective

1. Botany. of, relating to, or being an involucre.

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Example Sentences

Leaves round-quadrate, closely imbricate, deeply and obtusely 2–3-cleft; involucral leaves 3–4-cleft, connate at base, subserrate.

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

Characters as in Kuhnia; involucral scales more numerous, and the bristles of the pappus merely scabrous or at the most barbellate or subplumose; leaves often all opposite.

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

Receptacle elongated or top-shaped, naked at the summit, but chaffy at the margins or toward the base; the chaff resembling the proper involucral scales, each covering a single pistillate flower.

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

Leaves thinner; involucral scales thin, chiefly linear, obtuse.

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

Leaves oblong-ovate, taper-pointed, very sharply doubly serrate, downy beneath, with 11–15 principal veins; buds acute; involucral sacs bristly-hairy at the base.—Rich woods, common, from the Atlantic to N. Minn., Neb.,

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