Dieteria canescens var. shastensis

(A. Gray) D. R. Morgan & R. L. Hartman

Sida 20: 1396. 2003.

Endemic
Basionym: Machaeranthera shastensis A. Gray Proc. Amer. Acad. Arts 6: 539. 1866
Synonyms: Aster shastensis (A. Gray) A. Gray M. canescens var. shastensis (A. Gray) B. L. Turner
Treatment appears in FNA Volume 20. Treatment on page 400. Mentioned on page 395, 398, 399.

Annuals, biennials, or short-lived perennials. Stems 1+, ascending to erect, canescent, sometimes sparsely stipitate-glandular; branches ascending (curved, flexible). Mid leaf-blades lanceolate to oblanceolate. Peduncles equaling or longer than involucres. Involucres narrowly to broadly turbinate, 6–10 mm. Phyllaries in 3–5 (–7) series, appressed, spreading, or reflexed, apices often canescent, stipitate-glandular. Ray-florets sterile or 0. Cypselae sparsely appressed-hairy. 2n = 8.


Phenology: Flowering Aug–Oct.
Habitat: Grasslands, pine forests, sagebrush scrublands
Elevation: 1200–3400 m

Discussion

Variety shastensis is found in the Cascades, Sierra Nevada, and adjacent intermountain regions

Selected References

None.

Lower Taxa

None.
not tailed +, rounded +  and obtuse +
distinct +
stipitate-glandular +  and canescent +
subequal +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
spiciform +, racemiform +, paniculiform +  and corymbiform +
indeterminate +  and determinate +
David R. Morgan +
(A. Gray) D. R. Morgan & R. L. Hartman +
decurrent +
indurate +
Machaeranthera shastensis +
linear;oblanceolate;linear;oblanceolate;lanceolate;oblong;obovate;ovate +
rugulose +  and muricate +
white +  and tawny +
not 2-lipped +  and actinomorphic +
0.6 cm6 mm <br />0.006 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
yellow +, purple +, violet +, blue +  and white +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
8-12-ribbed +  and smooth +
beaked +, 2-ribbed +  and 5-ribbed +
appressed-hairy +
flattened +, linear +  and obovoid +
fertile +  and bisexual +
fertile +  and bisexual +
clasping +  and not clasping +
Calif. +, Nev. +  and Oreg. +
1200–3400 m +
stipitate-glandular +, hairy +, glabrous +, canescent +  and puberulent +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Grasslands, pine forests, sagebrush scrublands +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
0.6 cm6 mm <br />0.006 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
0.6 cm6 mm <br />0.006 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.6 cm6 mm <br />0.006 m <br /> (3 cm30 mm <br />0.03 m <br />) +
purple +, blue +  and white +
0.6 cm6 mm <br />0.006 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
1 cm10 mm <br />0.01 m <br /> (6 cm60 mm <br />0.06 m <br />) +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
petiolate +  and sessile +
cauline +, proximal +  and basal +
deltate +  and lanceolate +
serrate +, entire +  and irregularly dentate +
2-carpellate +
persistent +
stipitate-glandular +, canescent +, puberulent +  and glabrous +
Flowering Aug–Oct. +
reflexed +, spreading +  and appressed +
lanceolate +  and linear +
bearing subulate enations +, hairy +  and bristly +
exalbuminous +
ascending +  and erect +
appendaged +  and truncate +
papillate +  and smooth +
Aster shastensis +  and M. canescens var. shastensis +
Dieteria canescens var. shastensis +
Dieteria canescens +
variety +
perennial +, short-lived +, biennial +  and annual +
10 cm100 mm <br />0.1 m <br /> (100 cm1,000 mm <br />1 m <br />) +
tree +, shrub +  and subshrub +