Ionactis alpina

(Nuttall) Greene

Pittonia 3: 245. 1897.

Common names: Lava ankle-aster
IllustratedEndemic
Basionym: Chrysopsis alpina Nuttall J. Acad. Nat. Sci. Philadelphia 7: 34. 1834
Synonyms: Aster scopulorum A. Gray
Treatment appears in FNA Volume 20. Treatment on page 83. Mentioned on page 82.
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Plants 5–12 (–20) cm (sometimes weakly cespitose, caudices multicipital or with relatively short branches; rhizomes fibrous-rooted, thickened, becoming woody). Stems proximally herbaceous or slightly woody, eglandular. Leaves: proximal separated by evident internodes, spatulate, reduced in size distally; mid and distal ovate to oblong or linear, 4–15 mm, margins narrowly whitish hyaline, faces densely scabrous-hispidulous. Heads borne singly. Involucres 7–10 mm. Disc-florets bisexual, fertile; corollas 5.5–7.5 mm. Cypselae 5–6 mm, faces eglandular. 2n = 18, 36.


Phenology: Flowering May–Jul.
Habitat: Dry ridges, slopes, and flats, commonly with sagebrush
Elevation: 1300–2000(–3300) m

Distribution

V20-159-distribution-map.gif

Calif., Idaho, Mont., Nev., Oreg., Utah, Wyo.

Discussion

Selected References

None.

Lower Taxa

None.

"[" is not declared as a valid unit of measurement for this property."]" is not declared as a valid unit of measurement for this property.

... more about "Ionactis alpina"
not tailed +, rounded +  and obtuse +
distinct +
subequal +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
indeterminate +  and determinate +
Guy L. Nesom +
(Nuttall) Greene +
decurrent +
Chrysopsis alpina +
compound +  and simple +
linear;narrowly oblong or elliptic-lanceolate +
rugulose +  and muricate +
straw-colored +
Lava ankle-aster +
not 2-lipped +  and actinomorphic +
yellow +, white +, violet +  and bluish +
0.55 cm5.5 mm <br />0.0055 m <br /> (0.75 cm7.5 mm <br />0.0075 m <br />) +
beaked +, 2-ribbed +  and 5-ribbed +
flattened +  and obovoid +
fertile +  and bisexual +
2(-4)-nerved +
fertile +  and bisexual +
Calif. +, Idaho +, Mont. +, Nev. +, Oreg. +, Utah +  and Wyo. +
1300–2000(–3300) m +
scabrous-hispidulous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Dry ridges, slopes, and flats, commonly with sagebrush +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
broadly turbinate;campanulate +
0.7 cm7 mm <br />0.007 m <br /> (1 cm10 mm <br />0.01 m <br />) +
erect;spreading +
deltate +
whitish hyaline +
strigillose +, hirtellous +, hirsuto-strigose +  and glabrous +
not +  and scarious +
ovate +  and oblong or linear +
0.4 cm4 mm <br />0.004 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
2-carpellate +
persistent +
Flowering May–Jul. +
linear-lanceolate +
(2-)3-nerved +
bearing subulate enations +, hairy +  and bristly +
concave;usually flat;conic +
exalbuminous +
Illustrated +  and Endemic +
glabrous +  and puberulent +
woody +  and herbaceous +
appendaged +  and truncate +
papillate +  and smooth +
Aster scopulorum +
Ionactis alpina +
Ionactis +
species +
30 cm300 mm <br />0.3 m <br /> (70 cm700 mm <br />0.7 m <br />) +
4 cm40 mm <br />0.04 m <br /> (30 cm300 mm <br />0.3 m <br />) +
12 cm120 mm <br />0.12 m <br /> (20 cm200 mm <br />0.2 m <br />) +