Horkeliella congdonis

(Rydberg) Rydberg in N. L. Britton et al.

in N. L. Britton et al., N. Amer. Fl. 22: 283. 1908.

Common names: Congdon’s horkeliella or false horkelia
Endemic
Basionym: Horkelia congdonis Rydberg Bull. Torrey Bot. Club 26: 543. 1899
Synonyms: H. purpurascens subsp. congdonis (Rydberg) Abrams Ivesia purpurascens subsp. congdonis (Rydberg) D. D. Keck Potentilla purpurascens var. congdonis (Rydberg) Jepson
Treatment appears in FNA Volume 9. Treatment on page 271.
Revision as of 13:08, 30 July 2020 by imported>Volume Importer
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Plants green, nonglandular hairs sparse, not obscuring abundant stipitate-glandular ones. Basal leaves (5–) 8–25 (–27) cm; petiole 4–10 cm; leaflets 25–35 per side, 2–6 mm, divided into 5–10 ultimate segments, sparsely villous, more densely so marginally, minutely orangish sessile-glandular. Cauline leaves 2–7, 2–10 cm. Inflorescences ± congested. Pedicels usually 2 mm (proximalmost to 20 mm). Flowers 15 mm diam.; epicalyx bractlets lanceolate, 2.5–5 (–6) mm; sepals 4–8 (–9) mm, villous, short-stipitate-glandular; petals narrowly oblong-oblanceolate, 3–6 (–6.5) mm; filaments 1.5–3 mm, filament opposite center of sepal longer than those on either side, anthers 1 mm; styles 2–5 mm.


Phenology: Flowering late summer.
Habitat: Dry granitic meadows, in sagebrush communities, montane to subalpine conifer woodlands
Elevation: 1500–3100 m

Discussion

Horkeliella congdonis is known from the eastern foothills and slopes of the Sierra Nevada northeast to the Sweetwater Mountains and the Glass Mountain area of Mono and northern Inyo counties. It generally forms dense clumps that are notably more glandular than H. purpurascens.

Selected References

None.

Lower Taxa

None.

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

... more about "Horkeliella congdonis"
1 cm10 mm <br />0.01 m <br /> (?) +
Barbara Ertter +  and James L. Reveal +
(Rydberg) Rydberg in N. L. Britton et al. +
compound +  and simple +
opposite +  and alternate +
25 cm250 mm <br />0.25 m <br /> (27 cm270 mm <br />0.27 m <br />) +
8 cm80 mm <br />0.08 m <br /> (25 cm250 mm <br />0.25 m <br />) +
Horkelia congdonis +
20 cm200 mm <br />0.2 m <br /> (35 cm350 mm <br />0.35 m <br />) +
cylindric +
4 cm40 mm <br />0.04 m <br /> (20 cm200 mm <br />0.2 m <br />) +
coriaceous +
reduced +
free +  and distinct +
2 cm20 mm <br />0.02 m <br /> (10 cm100 mm <br />0.1 m <br />) +
Congdon’s horkeliella or false horkelia +
congested +  and open +
not +  and aggregated +
1500–3100 m +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
flattened +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
15 cm150 mm <br />0.15 m <br /> (?) +
unisexual +  and bisexual +
not +  and aggregated +
deciduous +
less;25;50 +
obliquely ovoid +  and reniform +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
Dry granitic meadows, in sagebrush communities, montane to subalpine conifer woodlands +
stipitate-glandular +
not abundant +
campanulate +
crassinucellate +
opposite +  and alternate +
winter-marcescent +
deciduous +  and persistent +
confluent +, imbricate +, overlapping +  and separate +
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
linear +  and oblanceolate +
inferior +  and superior +
clustered +, biseriate +  and superposed +
2 cm20 mm <br />0.02 m <br /> (?) +
0 (?) +  and 4 (?) +
0.6 cm6 mm <br />0.006 m <br /> (0.65 cm6.5 mm <br />0.0065 m <br />) +
pink-tinged +  and white +
free +  and distinct +
oblong-oblanceolate +
0.3 cm3 mm <br />0.003 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
4 cm40 mm <br />0.04 m <br /> (10 cm100 mm <br />0.1 m <br />) +
Flowering late summer. +
adnate +, free +, connate +  and distinct +
in N. L. Britton et al., N. Amer. Fl. +
not arillate +
0.8 cm8 mm <br />0.008 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
purple-streaked +
persistent +
free +  and distinct +
erect +  and reflexed +
short-stipitate-glandular +  and villous +
lanceolate +  and narrowly deltate +
0.4 cm4 mm <br />0.004 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
free +  and distinct +
branched +  and simple +
reddish +, stramineous +  and green +
ascending +  and erect +
1 +  and 20 +
palmate +  and pinnate +
linear;lanceolate or elliptic +
deciduous +
distinct +
subterminal +
filiform +
rough-thickened +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
H. purpurascens subsp. congdonis +, Ivesia purpurascens subsp. congdonis +  and Potentilla purpurascens var. congdonis +
Horkeliella congdonis +
Horkeliella +
species +
inconspicuous +
elongate +
enlarged +
glandular-pubescent +  and villous +