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Rayless Rockdaisy

Perityle angustifolia (A. Gray) Shinners

Comprehensive Description

provided by North American Flora
Laphamia angustifolia A. Gray, PI. Wright. 1: 100. 1852
A perennial with a thick woody caudex; stem about 1 dm. high, minutely and sparingly puberulent; leaves alternate or some opposite; blades lanceolate or oblanceolate, with a few sharp teeth or entire, 1-1.5 cm. long, glandular-pimctate, less distinctly 3-ribbed; heads corymbose; involucre 4 mm. high, 4-5 mm. broad; bracts linear-oblanceolate, slightly puberulent, ciliate towards the apex; rays wanting; disk-corollas 2.5 mm. long; tube nearly equaling the narrowly campanulate throat; achenes oblong-oblanceolate, puberulent, 2 mm. long; pappus wanting.
Type locality: "Between Texas and El Paso." Distribution: Western Texas.
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bibliographic citation
Per Axel Rydberg. 1914. (CARDUALES); CARDUACEAE; HELENIEAE. North American flora. vol 34(1). New York Botanical Garden, New York, NY
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Comprehensive Description

provided by North American Flora
Laphamia laciniata (Terr.) Rydberg, sp. nov
Laphamia angustifolia ? laciniata Torr. Bot. Mex. Bound. Surv. 82. 1859.
A perennial with woody caudex; stems decumbent, diffuse, 3-5 dm. long, grayish-puberulent; leaves mostly alternate; petioles about 1 cm. long; blades spatulate or cuneate, with few lanceolate salient teeth, 1-2 cm. long, puberulent and somewhat punctate, triple-ribbed; involucre turbinate, 5 mm. high, about 6 mm. broad; bracts oblanceolate, grayish-puberulent ; raj-s wanting; disk-corollas fully 3 mm. long; tube slightly shorter than the deeply campanulate throat; achenes fully 3 mm. long, pilose; pappus wanting.
Type locality: Crevices of rocks along the Rio Grande, Texas. Distribution: Western Texas.
license
cc-by-nc-sa-3.0
bibliographic citation
Per Axel Rydberg. 1914. (CARDUALES); CARDUACEAE; HELENIEAE. North American flora. vol 34(1). New York Botanical Garden, New York, NY
original
visit source
partner site
North American Flora