Flora of North America species comparison

The green links below add additional plants to the comparison table. Blue links lead to other Web sites.
enable glossary links

Eucephalus tomentellus

Eucephalus elegans

brickellbush aster, hairy rayless aster, rayless aster

elegant aster
Habit Perennials 40–90 cm (caudices woody). Perennials 30–70 cm (caudices woody; herbage scabrous).
Stems

erect, woolly or cottony.

erect, moderately scabrous and/or glandular.
Leaves

mid and distal blades lanceolate to elliptic, 2.5–6 cm × 7–20 mm, abaxial faces glabrous or glabrate, adaxial ± densely woolly to cottony.

mid and cauline blades linear-oblong or linear-lanceolate, 2–6 cm × 3–10 mm, faces moderately scabrous and ± short-stipitate-glandular.
Peduncles

pubescent.

glandular-puberulent.
Involucres

turbinate, 7–10 mm.

turbinate-cylindric, 6–9 mm.
Phyllaries

in 4–6 series (often reddish at margins and apices), linear-oblong to ovate (strongly unequal), apices acute, abaxial faces tomentose to stipitate-glandular.

in 3–5 series (often purplish at margins), ovate, margins eciliate, apices acute, abaxial faces moderately to densely puberulent and glandular.
Heads

3–40 in racemiform to paniculiform arrays.

3–8(–15) in racemiform to corymbiform arrays.
Cypselae

glabrous or pilose;

pappus bristles in 2 series, ± barbellate.

strigose;

pappus bristles in 2 series, barbellate.
Rays

(0–)1–3(–6), violet-purple.

usually 5 or 8, purple.
2n

= 18.

Eucephalus tomentellus

Eucephalus elegans
Phenology Flowering Jul–Aug. Flowering Jul–Aug.
Habitat Open oak or coniferous woods, forest openings and rocky cliffs Open meadows, aspen forests, rocky open slopes
Elevation 1300–2400 m (4300–7900 ft) 1100–3200 m (3600–10500 ft)
Distribution
from FNA
CA; OR
[WildflowerSearch map]
[BONAP county map]
from FNA
CO; ID; MT; NV; OR; UT
[WildflowerSearch map]
[BONAP county map]
Discussion

Eucephalus tomentellus grows in the Siskiyou Mountains of southwestern Oregon and northern California. It may intergrade with E. breweri and E. glabratus.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 20, p. 42. FNA vol. 20, p. 40.
Parent taxa Asteraceae > tribe Astereae > Eucephalus Asteraceae > tribe Astereae > Eucephalus
Sibling taxa
E. breweri, E. elegans, E. engelmannii, E. glabratus, E. glaucescens, E. gormanii, E. ledophyllus, E. paucicapitatus, E. vialis
E. breweri, E. engelmannii, E. glabratus, E. glaucescens, E. gormanii, E. ledophyllus, E. paucicapitatus, E. tomentellus, E. vialis
Synonyms Sericocarpus tomentellus, Aster brickellioides, Aster tomentellus, E. bicolor, E. brickellioides Aster perelegans, E. perelegans
Name authority (Greene) Greene: Pittonia 3: 55. (1896) Nuttall: Trans. Amer. Philos. Soc., n. s. 7: 298. (1840)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



Type/paste one or more Latin names into the boxes above; matching taxa will show up below the box as you type. You can use the up/down arrow keys to move through the list.

(If the plant you're looking for doesn't show up in the auto-complete list, that means it either isn't described in Flora of North America yet, or it's listed under a synonym. And please note that Flora of North America is still missing several plant families, including Fabaceae, Apiaceae, Boraginaceae, and Polemoniaceae.)

Choose a data source: Flora of North America, OregonFlora

The species comparison tool is brought to you by:
Northwest Wildflowers