Overview

Distribution

National Distribution

United States

Origin: Native

Regularity: Regularly occurring

Currently: Present

Confidence: Confident

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Physical Description

Morphology

Description

Plants 80–100+ cm. Stems strongly ridged. Basal leaves: (petioles 12–18+ cm) blades (lateral veins appressed to midveins 2–4 cm, then spreading) broadly ovate to narrowly oblong-lanceolate, 15–37 cm, margins usually entire, rarely sinuate or serrulate-denticulate. Cauline leaves: proximal petiolate, blades ovate (12–18+ cm, bases cuneate), margins serrate (apices acuminate); distal sessile, smaller. Involucres 10–12.5+ mm. Phyllaries (chalky white) ± ovate, midvein wings highest at bases. Corollas white, rarely tinged with pink, 9–10.5 mm. Cypselae cylindric to narrowly clavate, 4.2–5 mm; pappi 6–7 mm. 2n = 50.
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Type Information

Isotype for Arnoglossum album L.C. Anderson
Catalog Number: US 3590307
Collection: Smithsonian Institution, National Museum of Natural History, Department of Botany
Verification Degree: Status verified from secondary sources
Preparation: Pressed specimen
Collector(s): L. C. Anderson
Year Collected: 1995
Locality: Bay Co.: just E of Rt 77 on N side of Southport., Bay, Florida, United States, North America
Microhabitat: Moist loamy sand of big grassy pasture in full sun.
  • Isotype: Anderson, L. C. 1998. Sida. 18: 378.
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Ecology

Habitat

Comments: Wet pine savannas, pine flatwoods, and pine plantations; predominantly in disturbed areas and usually in moist loamy sand. Found in cleared grassy pastures in full sun, along fencerows, on roadsides, bordering wet roadside depressions, in roadside thickets, on woodland edges, and in cutover areas. Associated species include Sarracenia flava, Polygala sp., Rhexia sp., Rhynchospora sp., Xyris sp., Myrica sp., Nyssa sp., Salix sp., Liriodendron sp., Magnolia virginiana, and Ilex coriacea.


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Conservation

Conservation Status

National NatureServe Conservation Status

United States

Rounded National Status Rank: N1 - Critically Imperiled

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NatureServe Conservation Status

Rounded Global Status Rank: G1 - Critically Imperiled

Reasons: Arnoglossum album (which was described in 1998) is known from the central Florida panhandle, occurring in Bay County.

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Notes

Comments

Arnoglossum album is known only from Bay and Gulf counties.
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