Tetraneuris torreyana (Nutt.) Greene

Torrey's four-nerve daisy (en)

Species

Angiosperms > Asterales > Asteraceae > Tetraneuris

Characteristics

Perennials, 2–15+ cm. Caudices ± branched, branches notably thickened distally. Stems 1–30(–40), erect, unbranched. Leaves all basal, new leaves tightly clustered; blades (midribs usually pronounced) spatulate or oblanceolate to linear-oblanceolate, entire, glabrous or usually sparsely, sometimes moderately to densely, hairy, densely gland-dotted. Heads 1–10(–40) per plant, borne singly. Peduncles (0.5–)2–15 cm, ± hairy proximally, almost always densely lanate distally. Involucres 10–12 × 12–15 mm. Outer phyllaries 4–8, 6–8.5 mm, margins (0.3–)0.5–1.2 mm wide, usually conspicuously scarious, abaxial faces ± hairy. Ray florets 7–14; corollas 11–17 mm. Disc florets 25–150+; corollas yellow, 4–4.7 mm. Cypselae 3–4 mm; pappi of 5–7 obovate to oblanceolate, aristate scales 3–4(–4.5) mm.
Life form perennial
Growth form herb
Growth support free-standing
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Sexuality hermaphrodite
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Environment

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Hardiness (USDA) 4-9

Usage

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Cultivation

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Distribution

Tetraneuris torreyana world distribution map, present in United States of America

Identifiers

LSID urn:lsid:ipni.org:names:251791-2
WFO ID wfo-0000081199
COL ID 55Q73
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Actinea depressa Hymenoxys lapidicola Tetraneuris torreyana Hymenoxys torreyana Actinella torreyana Hymenoxys depressa Actinea torreyana Tetraneuris depressa Actinella depressa Actinea integrifolia Actinea depressa var. depressa Actinella depressa var. depressa