Antennaria luzuloides

Torrey & A. Gray

Fl. N. Amer. 2: 430. 1843.

Common names: Rush or silvery brown pussytoes
Endemic
Treatment appears in FNA Volume 19. Treatment on page 397. Mentioned on page 389, 393.

Dioecious. Plants 7–35 (–70) cm (often viviparous in late-season, bearing propagules in distal and, sometimes, proximal leaf-axils, sometimes woody at bases). Stolons none. Basal leaves 1–3-nerved, linear to narrowly spatulate, 18–55 × 1–10 mm, tips acuminate, faces gray-tomentose. Cauline leaves narrowly oblanceolate to linear, 5–60 mm, flagged. Heads 10–110+ in racemiform to paniculiform or corymbiform arrays. Involucres: staminate 3.5–5.5 mm; pistillate 3.5–6.5 mm. Phyllaries (relatively narrow, proximally green or golden brown, glabrous) distally white, acute. Corollas: staminate 2.5–4 mm; pistillate 2–4 mm. Cypselae 1–2 mm, sparingly papillate or papillate-strigose (hairs clavate); pappi: staminate 3–4.5 mm; pistillate 2.5–4 mm. 2n = 28.

Distribution

V19-629-distribution-map.gif

Alta., B.C., Calif., Colo., Idaho, Mont., Nev., Oreg., S.Dak., Utah, Wash., Wyo.

Discussion

subspecies 2 (2 in the flora)

Some authors have recognized Antennaria microcephala (= A. luzuloides subsp. aberrans) as a distinct species. Given the intergradation between A. luzuloides in the strict sense and A. microcephala in the strict sense, one species with two subspecies seems justified. Perhaps the most significant difference between the subspecies is ecologic. Antennaria luzuloides is a member of the Argenteae group.

Selected References

None.

Key

1 Heads 10–110+ in corymbiform arrays; basal leaves (1–)3-nerved; dry sagebrush-ponderosa pine com- munities Antennaria luzuloides subsp. luzuloides
1 Heads 10–30 in racemiform to paniculiform arrays; basal leaves 1(–3)-nerved; moist meadows or along moist drainages in ponderosa pine commu- nities Antennaria luzuloides subsp. aberrans
... more about "Antennaria luzuloides"
more or less tomentose +  and sericeous or glabrescent +
scarious +
mostly ovate +  and lanceovate or linear +
racemiform +  and paniculiform or corymbiform +
indeterminate +  and determinate +
Randall J. Bayer +
Torrey & A. Gray +
1.8 cm18 mm <br />0.018 m <br /> (5.5 cm55 mm <br />0.055 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (1 cm10 mm <br />0.01 m <br />) +
decurrent +
compound +  and simple +
spatulate;oblanceolate;spatulate;oblanceolate;linear;lanceolate;elliptic;cuneate +
5-ribbed +, 3-ribbed +  and 2-ribbed +
muriculate +, papillate +  and smooth +
narrowly oblanceolate +  and linear +
0.5 cm5 mm <br />0.005 m <br /> (6 cm60 mm <br />0.06 m <br />) +
Rush or silvery brown pussytoes +
pistillate +  and staminate +
red +, yellow +  and white +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
papillate-strigose +
papillate +
mostly ellipsoid +  and ovoid +
pistillate +  and staminate +
Alta. +, B.C. +, Calif. +, Colo. +, Idaho +, Mont. +, Nev. +, Oreg. +, S.Dak. +, Utah +, Wash. +  and Wyo. +
gray-tomentose +
papillate +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
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 +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.65 cm6.5 mm <br />0.0065 m <br />) +
sessile +  and petiolate +
cauline +  and basal +
rarely lanceovate +  and lanceolate +
2-carpellate +
pistillate +  and staminate +
persistent +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Fl. N. Amer. +
bearing subulate enations +, hairy +  and bristly +
flat;convex or ovoid +
exalbuminous +
appendaged +  and truncate +
papillate +
Compositae +
Antennaria luzuloides +
Antennaria +
species +
acuminate +
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 />) +