dcsimg

Comprehensive Description

provided by North American Flora
Vernonia acilepis Benth.; Oerst. Vidensk. Meddel 1852:68. 1852.
Cacalia acilepis Kuntze, Rev. Gen. 969. 1891.
Stems herbaceous, erect, 3-5 dm. high, thinly pubescent; leaf-blades thin, broadly elliptic or rhombic, 4-6 cm. long, 1.5-2.5 cm. wide, short-acuminate, entire, narrowed at the base into short margined petioles, papillose-pubescent above, becoming scabrellate with the persistent hair-bases, strigose-pilose and not resinous beneath; inflorescence of 3-5 loosely spreading cymes bearing each 4-8 heads; bracteal leaves oblong to oblanceolate, 2-3 cm. long, resembling the cauline but smaller; heads about 15-flowered, 2-3 cm. apart; involucre narrowly campanulate, 8-10 mm. high; scales all erect, lanceolate, subulate-tipped, scarious at the margin, arachnoid below, thinly villous and not resinous above; achenes densely pilose, 2 mm. long; pappus nearly white, 5 mm. long.
Type locality: Masaya volcano, alt. about 2000 meters, Costa Rica. Distribution: Costa Rica.
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bibliographic citation
Per Axel, Rydberg. 1922. CARDUALES; AMBROSIACEAE, CARDUACEAE. North American flora. vol 33(1). New York Botanical Garden, New York, NY
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