Arnica spathulata

Greene

Pittonia 3: 103. 1896.

Common names: Klamath arnica
Endemic
Synonyms: Arnica eastwoodiae Rydberg Arnica spathulata subsp. eastwoodiae (Rydberg) Maguire Arnica spathulata var. eastwoodiae (Rydberg) Ediger & T. M. Barkley
Treatment appears in FNA Volume 21. Treatment on page 376. Mentioned on page 367.

Plants 15–45+ cm. Stems simple or branched. Leaves 3–5 pairs, sometimes crowded toward bases (basal leaves often persistent on sterile rosettes); petiolate (petioles mostly broadly winged, 1–9 × 0.2–1.5 cm); blades elliptic-ovate to spatulate, 2–8 × 1–4 cm, margins subentire to mostly irregularly dentate, apices acute, faces sparsely to densely villous, stipitate-glandular. Heads 1, or 3–9 (–25). Involucres turbinate-campanulate. Phyllaries 8–15, broadly to narrowly lanceolate. Ray-florets 0. Disc-florets 15–50; corollas yellow; anthers yellow. Cypselae black, 5–10 mm, sparsely stipitate-glandular; pappi white, bristles barbellate. 2n = 38, 76.


Phenology: Flowering Apr–Jul.
Habitat: Usually serpentine soils, open, dry oak–conifer forests, disturbed areas
Elevation: 200–1500 m

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Arnica spathulata"
not tailed +, rounded +  and obtuse +
connate +  and distinct +
subequal +
scarious +
usually ovate +  and lanceolate +
usually deltate +  and lanceolate +
corymbiform +  and cymiform +
indeterminate +  and determinate +
Steven J. Wolf +
Greene +
decurrent +
compound +  and simple +
2 cm20 mm <br />0.02 m <br /> (8 cm80 mm <br />0.08 m <br />) +
elliptic-ovate;spatulate +
1cm;4cm +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
connate +  and distinct +
Klamath arnica +
stipitate-glandular +  and hairy +
stipitate-glandular +
obovoid-cylindric +, fusiform +  and conic +
fertile +  and bisexual +
fertile +  and bisexual +
Calif. +  and Oreg. +
200–1500 m +
stipitate-glandular +  and villous +
scabrellous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
campanulate +  and cylindric +
Usually serpentine soils, open, dry oak–conifer forests, disturbed areas +
discoid +  and radiate +
in cymiform or corymbiform arrays +  and singly +
indeterminate +
homogamous +  and heterogamous +
each +  and sessile +
0.6 cm6 mm <br />0.006 m <br /> (2 cm20 mm <br />0.02 m <br />) +
turbinate-campanulate +
cauline +  and basal +
3 (?) +  and 5 (?) +
deltate +
dentate to pinnatifid or palmatifid +  and entire +
subentire +  and mostly irregularly dentate +
2-carpellate +
subplumose +  and barbellate +
persistent +
10 +  and 50 +
aristate +
Flowering Apr–Jul. +
8 +  and 15 +
bearing subulate enations +, hairy +  and bristly +
pitted +  and smooth +
distinct +
4 +  and 20 +
exalbuminous +
branched +  and simple +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Arnica eastwoodiae +, Arnica spathulata subsp. eastwoodiae +  and Arnica spathulata var. eastwoodiae +
Arnica spathulata +
species +
campanulate +  and cylindric +
80 cm800 mm <br />0.8 m <br /> (300 cm3,000 mm <br />3 m <br />) +
1 cm10 mm <br />0.01 m <br /> (80 cm800 mm <br />0.8 m <br />) +
toothed +  and entire +
80 cm800 mm <br />0.8 m <br /> (300 cm3,000 mm <br />3 m <br />) +
5 cm50 mm <br />0.05 m <br /> (100 cm1,000 mm <br />1 m <br />) +