Ionactis caelestis

P. J. Leary & G. L. Nesom

Brittonia 44: 247. 1992.

Common names: Spring Mountain ankle-aster aster
EndemicConservation concern
Treatment appears in FNA Volume 20. Treatment on page 83. Mentioned on page 82.

Plants 12–25 cm (with multicipital crowns, not cespitose; taproots thick, woody). Stems strongly woody proximally, glandular. Leaves: proximal and mid separated by evident internodes; blades oblong-ovate, 4–6 mm, distal much reduced, margins green, faces hispidulous, sessile to stipitate-glandular. Heads borne singly or in loose, corymbiform arrays. Involucres 6.5–7 mm. Disc-florets functionally staminate (with sterile ovaries); corollas 4–4.5 mm. Cypselae 2.5–2.8 mm, faces eglandular. 2n = 18.


Phenology: Flowering Jun–Aug.
Habitat: Crevices of sparsely vegetated sandstone, areas of Pinus monophylla, Pinus ponderosa and Arctostaphylos pungens
Elevation: 2000–2100 m

Discussion

Of conservation concern.

Ionactis caelestis is known from a single population in the Red Rock Canyon National Conservation Area of the Spring Mountains, Clark County.

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 caelestis"
not tailed +, rounded +  and obtuse +
distinct +
subequal +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
indeterminate +  and determinate +
Guy L. Nesom +
P. J. Leary & G. L. Nesom +
decurrent +
compound +  and simple +
oblong-ovate +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
rugulose +  and muricate +
straw-colored +
Spring Mountain ankle-aster +  and aster +
not 2-lipped +  and actinomorphic +
yellow +, white +, violet +  and bluish +
0.4 cm4 mm <br />0.004 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
beaked +, 2-ribbed +  and 5-ribbed +
flattened +  and obovoid +
fertile +  and bisexual +
2(-4)-nerved +
fertile +  and bisexual +
2000–2100 m +
eglandular +  and sessile +
stipitate-glandular +  and hispidulous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Crevices of sparsely vegetated sandstone, areas of Pinus monophylla, Pinus ponderosa and Arctostaphylos pungens +
in loose , corymbiform arrays +  and singly +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
broadly turbinate;campanulate +
0.65 cm6.5 mm <br />0.0065 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
mid +  and proximal +
erect;spreading +
deltate +
strigillose +, hirtellous +, hirsuto-strigose +  and glabrous +
Not (?) +  and Scarious (?) +
2-carpellate +
persistent +
Flowering Jun–Aug. +
linear-lanceolate +
(2-)3-nerved +
bearing subulate enations +, hairy +  and bristly +
concave;usually flat;conic +
exalbuminous +
Endemic +  and Conservation concern +
simple +  and branched +
appendaged +  and truncate +
papillate +  and smooth +
Aster subg. Ianthe +
Ionactis caelestis +
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 />) +