Antennaria howellii subsp. howellii

Synonyms: Antennaria callilepis Greene Antennaria exima Greene
Treatment appears in FNA Volume 19. Treatment on page 404. Mentioned on page 390, 405.
Plants 15–30 cm. Stolons 1–4 cm. Basal leaves 1–3-nerved, spatulate to oblanceolate, 25–40 × 9–12 mm, tips mucronate, faces abaxially tomentose, adaxially green-glabrous. Cauline leaves linear, 20–40 mm, not flagged. Heads 5–12 in corymbiform arrays. Involucres: staminate unknown; pistillate 6–7.5 mm. Phyllaries distally light brown or white. Corollas: pistillate 5–6 mm. Cypselae 1.5–2 mm, notably papillate; pappi: pistillate 6–8 mm. 2n = 56, 84, 140 (under A. neodioica).

Phenology: Flowering mid spring–early summer.
Habitat: Pastures, dry fields, openings in deciduous woodlands and coniferous forests. and rock barrens
Elevation: 0–2200 m



Alta., B.C., Ont., Sask., Yukon, Calif., Colo., Idaho, Minn., Mont., Oreg., S.Dak., Utah, Wash., Wis., Wyo.


Subspecies howellii is most common in the western half of the range of Antennaria howellii. Based on morphology, this group of apomicts is closely related to A. racemosa of the northern Rockies (R. J. Bayer 1985) and, perhaps, to A. marginata of the southern Rockies.

Selected References


Lower Taxa


AuthorRandall J. Bayer +
AuthorityGreene +
DistributionAlta. +, B.C. +, Ont. +, Sask. +, Yukon +, Calif. +, Colo. +, Idaho +, Minn. +, Mont. +, Oreg. +, S.Dak. +, Utah +, Wash. +, Wis. + and Wyo. +
Elevation0–2200 m +
HabitatPastures, dry fields, openings in deciduous woodlands and coniferous forests. and rock barrens +
Illustration copyrightFlora of North America Association +
IllustratorYevonn Wilson-Ramsey +
PhenologyFlowering mid spring–early summer. +
Publication titlePittonia +
Publication year1897 +
ReferenceNone +
Source xml grained fna xml/V19-20-21/V19 650.xml +
SynonymsAntennaria callilepis + and Antennaria exima +
Taxon familyAsteraceae +
Taxon nameAntennaria howellii subsp. howellii +
Taxon parentAntennaria howellii +
Taxon ranksubspecies +
VolumeVolume 19 +