Microseris laciniata subsp. detlingii

K. L. Chambers

Sida 21: 200, figs. 2E, F, 4. 2004.

Common names: Detling’s silverpuffs
Treatment appears in FNA Volume 19. Treatment on page 342. Mentioned on page 341.

Stems simple. Leaves lanceolate or oblanceolate, usually entire, rarely sparingly pinnately lobed. Outer phyllaries sometimes purple-spotted, elliptic-ovate, smallest (2.5–) 4 mm wide, apices (erect), acute or cuspidate, abaxial faces glabrous. Pappi of 9–15, silvery to dull white, linear-lanceolate aristate scales 4–8 mm, aristae barbellate. 2n = 18.


Phenology: Flowering May–Jun.
Habitat: Heavy clay soils, open hillsides, grasslands, and shrublands
Elevation: 600–1500 m

Discussion

Of conservation concern.

Subspecies detlingii is known only from the Siskiyou Pass region and adjacent foothills of southern Jackson County, Oregon, and Siskiyou County, California. It is found only in clay soils that become very sticky when wet. The plants are unusual in their relatively long pappus scales, simple habit, and deeply penetrating taproots (K. L. Chambers 2004b). Clonal reproduction occurs by buds arising on lateral roots.

Selected References

None.

Lower Taxa

None.

"fine" is not a number.

cuspidate;acute +
scarious +
ovate +  and lanceolate +
paniculiform +  and corymbiform +
indeterminate +  and determinate +
Kenton L. Chambers +
K. L. Chambers +
decurrent +
Hymenonema laciniatum +
compound +  and simple +
linear;broadly lanceolate +
10 cm100 mm <br />0.1 m <br /> (50 cm500 mm <br />0.5 m <br />) +
tuberculate +, rugose +, muricate +  and smooth +
filiform +
Detling’s silverpuffs +
zygomorphic +, actinomorphic +  and (3-)5-merous +
purplish-spotted +, gray +  and brown or purplish +
Calif. +  and Oreg. +
600–1500 m +
scurfy-puberulent +  and glabrous +
winged +  and beaked +
dispersed +
Heavy clay soils, open hillsides, grasslands, and shrublands +
indeterminate +
each +  and sessile +
0.3 cm3 mm <br />0.003 m <br /> (3 cm30 mm <br />0.03 m <br />) +
globose;narrowly ovoid +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
cauline +  and basal +
lobed;oblanceolate;lanceolate +
pinnatifid +, lacerate +  and dentate +
elliptic-ovate +
4 cm40 mm <br />0.04 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
2-carpellate +
silvery +  and dull white +
persistent +
deltate +  and lanceolate +
leafy +  and ebracteate +
curved-ascending +  and erect +
Flowering May–Jun. +
connate +  and distinct +
5 +  and 40 +
flat;low-convex +
10 +  and 15 +
linear +, orbiculate +, ovate +, oblong +, lanceolate +  and deltate +
silvery;yellowish brownish or blackish +
5 +  and 30 +
aristate +  and linear-lanceolate +
0.4 cm4 mm <br />0.004 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
exalbuminous +
Illustrated +  and Endemic +
scurfy +  and glabrous +
few +, 1 +  and 30 +
appendaged +  and truncate +
papillate +
Scorzonella laciniata +
Microseris laciniata subsp. detlingii +
Microseris laciniata +
subspecies +
15 cm150 mm <br />0.15 m <br /> (120 cm1,200 mm <br />1.2 m <br />) +
shrub +  and subshrub +