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.

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 />) +