Horkelia daucifolia var. indicta

(Jepson) Ertter & Reveal

Novon 17: 319. 2007.

Common names: Jepson’s horkelia
Conservation concernEndemic
Basionym: Potentilla daucifolia var. indicta Jepson Man. Fl. Pl. Calif., 493. 1925
Treatment appears in FNA Volume 9. Treatment on page 267. Mentioned on page 266.
Revision as of 13:08, 30 July 2020 by imported>Volume Importer
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Plants rosette-forming to tufted. Basal leaves green, 7–11 cm; leaflets 5–10 (–15) mm, lobes (2–) 5–15, linear, 0.4–1 mm wide. Pedicels 5–10 (–20) mm, not puberulent, minutely glandular. Flowers: petals broadly obovate to obcordate, 5–7.5 × 4–6 mm; filaments 2–3 mm.


Phenology: Flowering summer.
Habitat: Vernally saturated openings in oak-conifer woodlands, mainly on clay soil
Elevation: 200–700 m

Discussion

Of conservation concern.

Variety indicta was known only from the type in Tehama County until rediscovered in 1990 in western Shasta County, confirming that this is a distinct variety in the forested hills rimming the northern Sacramento Valley (B. Ertter and J. L. Reveal 2007). One other historic collection of Horkelia daucifolia from Shasta County (Montgomery Creek, Smith s.n., CAS) is more similar to var. daucifolia.

Selected References

None.

Lower Taxa

None.

"thin" is not a number."dm" is not declared as a valid unit of measurement for this property."dm" is not declared as a valid unit of measurement for this property.

smooth +  and more or less roughened +
2.4mm +  and 3mm +
shorter than wide +  and longer +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
rounded +
Barbara Ertter +  and James L. Reveal +
(Jepson) Ertter & Reveal +
compound +  and simple +
opposite +  and alternate +
12 cm120 mm <br />0.12 m <br /> (17 cm170 mm <br />0.17 m <br />) +
3 cm30 mm <br />0.03 m <br /> (4 cm40 mm <br />0.04 m <br />) +
5 cm50 mm <br />0.05 m <br /> (12 cm120 mm <br />0.12 m <br />) +
weakly planar;loosely cylindric +
7 cm70 mm <br />0.07 m <br /> (11 cm110 mm <br />0.11 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (3 cm30 mm <br />0.03 m <br />) +
flattened +
Potentilla daucifolia var. indicta +
30 cm300 mm <br />0.3 m <br /> (40 cm400 mm <br />0.4 m <br />) +
planar +  and cylindric +
2 cm20 mm <br />0.02 m <br /> (30 cm300 mm <br />0.3 m <br />) +
coriaceous +
reduced +
free +  and distinct +
Jepson’s horkelia +
open to congested +
not +  and aggregated +
200–700 m +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
linear +  and linear-lanceolate +
0.5 cm5 mm <br />0.005 m <br /> (?) +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
flattened +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.5mm;1.5mm +
in more or less corymbiform clusters +  and arranged +
1 cm10 mm <br />0.01 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
unisexual +  and bisexual +
not +  and aggregated +
obliquely ovoid +  and reniform +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
sparse +  and dense +
noncapitate +  and capitate +
Vernally saturated openings in oak-conifer woodlands, mainly on clay soil +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
pilose +  and glabrous +
0 +  and 1/2 +
0.1 cm1 mm <br />0.001 m <br /> (0.55 cm5.5 mm <br />0.0055 m <br />) +
crassinucellate +
opposite +  and alternate +
marcescent +
winter-persistent +
1.5 cm15 mm <br />0.015 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
1 cm10 mm <br />0.01 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
divided +, obovate +  and broadly obcordate +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (?) +  and 2 cm20 mm <br />0.02 m <br /> (?) +
linear +  and oblanceolate +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (?) +  and 0.1 cm1 mm <br />0.001 m <br /> (?) +
palmate +  and pinnate +
shallowly toothed +  and deeply divided +
aromatic +
inferior +  and superior +
clustered +, biseriate +  and superposed +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
not puberulent +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
0 (?) +  and 4 (?) +
yellowish +, white +  and cream +
free +  and distinct +
5mm;7.5mm +
broadly obovate;obcordate +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Flowering summer. +
adnate +, free +, connate +  and distinct +
not arillate +
linear;filiform +
persistent +
free +  and distinct +
obtuse +  and acute +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.75 cm7.5 mm <br />0.0075 m <br />) +
Conservation concern +  and Endemic +
free +  and distinct +
branched +  and simple +
stramineous +, reddish +  and green +
ascending +  and erect +
1 +  and 10 +
palmate +  and pinnate +
1-3-lobed;3-7-lobed;divided +
0.8 cm8 mm <br />0.008 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
deciduous +
distinct +
subterminal +
filiform +
rough-thickened +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Ambiguae +, Hirsutae +, Horkelia sect. Hirsutae +, Sericatae +  and Horkelia sect. Sericatae +
Horkelia daucifolia var. indicta +
Horkelia daucifolia +
variety +
inconspicuous +
enlarged +
green +  and grayish +
plant +  and rosette-forming +
hairy +  and inconspicuously conspicuously glandular +