Antennaria howellii subsp. petaloidea

(Fernald) R. J. Bayer

Brittonia 41: 397. 1989.

Common names: Petaloid pussytoes antennaire pétaloïde
Endemic
Basionym: Antennaria neodioica var. petaloidea Fernald Proc. Boston Soc. Nat. Hist. 28: 245. 1898
Synonyms: Antennaria appendiculata Fernald Antennaria concolor Piper Antennaria neglecta var. petaloidea (Fernald) Cronquist Antennaria neglecta var. subcorymbosa Fernald Antennaria neodioica subsp. petaloidea (Fernald) R. J. Bayer & Stebbins Antennaria neodioica var. petaloidea Fernald Antennaria pedicellata Greene Antennaria petaloidea Antennaria petaloidea var. novaboracensis Fernald Antennaria petaloidea var. scariosa Fernald Antennaria petaloidea var. subcorymbosa (Fernald) Fernald Antennaria stenolepis
Treatment appears in FNA Volume 19. Treatment on page 405. Mentioned on page 404.

Plants 8–35 cm. Stolons 4–9 cm (leaves along stolons smaller than in rosettes at ends). Basal leaves 1 (–3) -nerved, cuneate-oblanceolate, spatulate, or spatulate-obovate (without distinct petioles), 15–45 (–65) × 5–20 mm, tips mucronate, faces abaxially tomentose, adaxially gray-pubescent to floccose-glabrescent. Cauline leaves linear, 10–35 mm, mid and distal flagged. Heads 4–10 (–15) in corymbiform arrays. Involucres: staminate (uncommon) 6–6.5 mm; pistillate 7–11 mm. Phyllaries distally white or cream. Corollas: staminate 3–4 mm; pistillate 4–6.5 (–8) mm. Cypselae 0.8–1.7 mm, minutely papillate; pappi: staminate 4–4.5 mm; pistillate 5.5–8 mm. 2n = 56, 84 (under A. neodioica).


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

Distribution

V19-652-distribution-map.gif

St. Pierre and Miquelon, Alta., B.C., N.B., Nfld. and Labr. (Nfld.), N.S., Ont., P.E.I., Que., Colo., Conn., Del., Ill., Ind., Maine, Md., Mass., Mich., Minn., Mont., N.H., N.J., N.Y., N.C., N.Dak., Ohio, Oreg., Pa., R.I., S.Dak., Vt., Va., Wash., W.Va., Wis., Wyo.

Discussion

Subspecies petaloidea is most common in the eastern half of the range of Antennaria howellii and is frequent as far west as British Columbia and Washington. Its primary sexual progenitors include A. plantaginifolia and A. neglecta (R. J. Bayer 1985).

Selected References

None.

Lower Taxa

None.
more or less tomentose +  and sericeous or glabrescent +
scarious +
mostly ovate +  and lanceovate or linear +
indeterminate +  and determinate +
Randall J. Bayer +
(Fernald) R. J. Bayer +
4.5 cm45 mm <br />0.045 m <br /> (6.5 cm65 mm <br />0.065 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (2 cm20 mm <br />0.02 m <br />) +
decurrent +
Antennaria neodioica var. petaloidea +
compound +  and simple +
spatulate;oblanceolate;spatulate;oblanceolate;linear;lanceolate;elliptic;cuneate +
5-ribbed +, 3-ribbed +  and 2-ribbed +
muriculate +, papillate +  and smooth +
1 cm10 mm <br />0.01 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
Petaloid pussytoes +  and antennaire pétaloïde +
pistillate +  and staminate +
0.65 cm6.5 mm <br />0.0065 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
red +, yellow +  and white +
0.4 cm4 mm <br />0.004 m <br /> (0.65 cm6.5 mm <br />0.0065 m <br />) +
papillate +
mostly ellipsoid +  and ovoid +
pistillate +  and staminate +
St. Pierre and Miquelon +, Alta. +, B.C. +, N.B. +, Nfld. and Labr. (Nfld.) +, N.S. +, Ont. +, P.E.I. +, Que. +, Colo. +, Conn. +, Del. +, Ill. +, Ind. +, Maine +, Md. +, Mass. +, Mich. +, Minn. +, Mont. +, N.H. +, N.J. +, N.Y. +, N.C. +, N.Dak. +, Ohio +, Oreg. +, Pa. +, R.I. +, S.Dak. +, Vt. +, Va. +, Wash. +, W.Va. +, Wis. +  and Wyo. +
0–2200 m +
adaxially gray-pubescent +  and floccose-glabrescent +
papillate +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Pastures, dry fields, openings in woodlands and forests, and rock barrens +
in corymbiform , paniculiform , racemiform or subcapitate , arrays +  and singly +
indeterminate +
homogamous +  and heterogamous +
each +  and sessile +
pistillate +  and staminate +
0.3 cm3 mm <br />0.003 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
campanulate;cylindric +
0.7 cm7 mm <br />0.007 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
sessile +  and petiolate +
cauline +  and basal +
rarely lanceovate +  and lanceolate +
2-carpellate +
pistillate +  and staminate +
persistent +
0.55 cm5.5 mm <br />0.0055 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Flowering mid spring–early summer. +
bearing subulate enations +, hairy +  and bristly +
flat;convex or ovoid +
exalbuminous +
appendaged +  and truncate +
papillate +
Antennaria appendiculata +, Antennaria concolor +, Antennaria neglecta var. petaloidea +, Antennaria neglecta var. subcorymbosa +, Antennaria neodioica subsp. petaloidea +, Antennaria neodioica var. petaloidea +, Antennaria pedicellata +, Antennaria petaloidea +, Antennaria petaloidea var. novaboracensis +, Antennaria petaloidea var. scariosa +, Antennaria petaloidea var. subcorymbosa +  and Antennaria stenolepis +
Antennaria howellii subsp. petaloidea +
Antennaria howellii +
subspecies +
mucronate +
25 cm250 mm <br />0.25 m <br /> (70 cm700 mm <br />0.7 m <br />) +
4 cm40 mm <br />0.04 m <br /> (25 cm250 mm <br />0.25 m <br />) +