Wyethia helenioides

(de Candolle) Nuttall

Trans. Amer. Philos. Soc., n. s. 7: 353. 1840.

Endemic
Basionym: Alarconia helenioides de Candolle in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 5: 537. 1836
Treatment appears in FNA Volume 21. Treatment on page 101. Mentioned on page 100.

Plants (15–) 25–40 (–60) cm. Basal leaves: blades (whitish to grayish) oblong-ovate to lance-elliptic, 18–38 cm, margins usually entire, sometimes serrulate or dentate (often undulate), faces densely tomentose to tomentulose (usually glanddotted as well), glabrescent; cauline leaves (3–6) similar, smaller. Heads usually borne singly (–2+). Involucres hemispheric or broader, 35–60+ mm diam. Phyllaries 16–24, unequal, herbaceous, margins not ciliolate, faces tomentose; outer (30–) 40–80+ mm (foliaceous, much surpassing the discs). Ray-florets 13–21; laminae 20–35 (–50) mm. Cypselae 12–15 mm, distally strigillose. 2n = 38.


Phenology: Flowering (Feb–)Mar–May.
Habitat: Grassy slopes, openings in woodlands
Elevation: 10 –1600(–2000) m

Discussion

Wyethia helenioides grows in the Sierra Nevada foothills and west of the Central Valley, avoiding the fog belt.

Selected References

None.

Lower Taxa

None.

"broader" is not a number.

... more about "Wyethia helenioides"
not tailed +, rounded +  and obtuse +
connate +  and distinct +
subequal +
scarious +
usually ovate +  and lanceolate +
usually deltate +  and lanceolate +
less corymbiform +  and racemiform +
indeterminate +  and determinate +
William A. Weber +
(de Candolle) Nuttall +
bristlelike +
coroniform +
truncate +  and cuneate +
Alarconia helenioides +
compound +  and simple +
oblong-ovate;lance-elliptic +
18 cm180 mm <br />0.18 m <br /> (38 cm380 mm <br />0.38 m <br />) +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellulate +  and barbellate +
3-4-angled +  and prismatic +
fertile +  and bisexual +
fertile +  and bisexual +
10 –1600(–2000) m +
tomentose +, glabrescent +, densely tomentose +  and tomentulose +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Grassy slopes, openings in woodlands +
indeterminate +
homogamous +  and heterogamous +
each +  and sessile +
3.5 cm35 mm <br />0.035 m <br /> (6 cm60 mm <br />0.06 m <br />) +
hemispheric +
3.5 cm35 mm <br />0.035 m <br /> (5 cm50 mm <br />0.05 m <br />) +
2 cm20 mm <br />0.02 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
sessile +  and petiolate +
cauline +  and basal +
less deltate +  and lanceolate +
dentate +, serrulate +  and entire +
not ciliolate +
3 cm30 mm <br />0.03 m <br /> (4 cm40 mm <br />0.04 m <br />) +
4 cm40 mm <br />0.04 m <br /> (8 cm80 mm <br />0.08 m <br />) +
2-carpellate +
persistent +
of 1-4+ ovate to subulate , erose to lacerate scales +  and coroniform +
Flowering (Feb–)Mar–May. +
16 +  and 24 +
Trans. Amer. Philos. Soc., n. s. +
bearing subulate enations +, hairy +  and bristly +
flat;convex +
1 +  and 4 +
lacerate +, ovate +  and subulate +
exalbuminous +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Undefined (tribe Undefined) subtribe Enceliinae +, Undefined (tribe Undefined) subtribe Engelmanniinae +, Undefined (tribe Undefined) subtribe Spilanthinae +, Undefined (tribe Undefined) subtribe Verbesininae +  and Undefined (tribe Undefined) subtribe Zinniinae +
Wyethia helenioides +
species +
cylindric +
cylindric +
shorter to longer than campanulate +
toothed +  and entire +
60 cm600 mm <br />0.6 m <br /> (100 cm1,000 mm <br />1 m <br />) +
15 cm150 mm <br />0.15 m <br /> (60 cm600 mm <br />0.6 m <br />) +