Antennaria plantaginifolia

(Linnaeus) Hooker

Fl. Bor.-Amer. 1: 330. 1834

Common names: Plantain-leaved pussytoes antennaire à feuilles de plantain
Synonyms: Antennaria caroliniana Rydberg Antennaria decipiens Greene Antennaria denikeana B. Boivin Antennaria nemoralis Greene Antennaria pinetorum Greene Antennaria plantaginifolia var. petiolata (Fernald) A. Heller
Basionyms: Gnaphalium plantaginifolium Linnaeus
Treatment appears in FNA Volume 19. Treatment on page 400. Mentioned on page 390, 391, 394, 402, 404, 4.
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Dioecious. Plants 6.5–20(–25) cm. Stolons 2.5–7.5 cm (mostly ascending when young). Basal leaves (petiolate) 3–5(–7)-nerved, obovate to suborbiculate, 35–75 × 15–35 mm, tips minutely mucronate, abaxially tomentose, adaxially green-glabrescent to gray-pubescent. Cauline leaves linear, 6.5–35 mm, distal flagged. Heads 4–17(–30) in tight corymbiform arrays. Involucres: staminate 5–7(–8) mm; pistillate 5–7 mm. Phyllaries distally white. Corollas: staminate 2–3.5 mm; pistillate 3–4 mm. Cypselae 0.5–1.6 mm, slightly papillate; pappi: staminate 2.5–4 mm; pistillate 3.5–5.5 mm. 2n = 28.

Phenology: Flowering mid–late spring.
Habitat: Dry, open, deciduous woodlands, tops of banks, ridges, and bluffs, sandstone formations, slopes in openings in woodlands
Elevation: 0–1500 m

Distribution

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Man., N.B., N.S., Que., Ala., Ark., Conn., Del., Fla., Ga., Ill., Ind., Iowa, Ky., Maine, Md., Mass., Minn., Miss., Mo., N.H., N.J., N.Y., N.C., Okla., Pa., R.I., S.C., Tenn., Vt., Va., W.Va., Wis.

Discussion

Antennaria plantaginifolia is a diploid progenitor of the A. parlinii complex and is similar to that species except for smaller heads and adaxially gray-pubescent basal leaves (R. J. Bayer and G. L. Stebbins 1982; Bayer 1985b; Bayer and D. J. Crawford 1986). It is a diploid ancestor of the A. howellii complex. It is found in the Appalachian region; disjunct populations occur in the driftless area of Wisconsin and Minnesota (Bayer and Stebbins).

References

None.

Lower Taxa

No lower taxa listed.