Chamaerhodos erecta

(Linnaeus) Bunge in C. F. von Ledebour

in C. F. von Ledebour, Fl. Altaica 1: 430. 1829.

Illustrated
Basionym: Sibbaldia erecta Linnaeus Sp. Pl. 1: 284. 1753
Synonyms: Chamaerhodos erecta subsp. nuttallii (Pickering ex Rydberg) Hultén C. erecta var. parviflora (Nuttall) C. L. Hitchcock C. nuttallii
Treatment appears in FNA Volume 9. Treatment on page 280.

Leaves: basal petiole to 30 mm; lobes of cauline leaves 5–18 × 0.2–1 mm; surfaces white-hairy, stipitate-glandular, hairs rarely antrorsely barbed. Flowers: sepals 1.8–2.5 mm; petals 1.8–2.5 × 0.5–1.1 mm. 2n = 14.


Phenology: Flowering Jun–Aug; fruiting Jul–Sep.
Habitat: Prairies, dry hilltops, knolls, outcrops, buttes, rocky and sandy soil or gravel, exposed and disturbed sites
Elevation: 300–3200 m

Distribution

V9 453-distribution-map.jpg

Alta., B.C., Man., N.W.T., Ont., Sask., Yukon, Alaska, Colo., Mich., Minn., Mont., N.Dak., S.Dak., Utah., Wyo., Asia (Mongolia), Asia (Russian Far East), Asia (Siberia)

Discussion

No clear distinction could be made among infraspecific taxa of Chamaerhodos erecta. Purportedly distinguishing characters, for example petal length relative to sepal length, vary throughout the range of the species. Stems may be in tufts, single or multiple (one North Dakota specimen exhibited leafy tufts with ten branches from the base). Most often, specimens are single-stemmed, branching distal to the middle, and producing flat-topped inflorescences.

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 "Chamaerhodos erecta"
Joshua C. Springer +  and Bruce D. Parfitt† +
(Linnaeus) Bunge in C. F. von Ledebour +
compound +  and simple +
opposite +  and alternate +
0 cm0 mm <br />0 m <br /> (3 cm30 mm <br />0.03 m <br />) +
Sibbaldia erecta +
pinnatifid +, 1-2-pinnate +  and obovate +
1.5 cm15 mm <br />0.015 m <br /> (4 cm40 mm <br />0.04 m <br />) +
coriaceous +
erect +  and ascending +
free +  and distinct +
Alta. +, B.C. +, Man. +, N.W.T. +, Ont. +, Sask. +, Yukon +, Alaska +, Colo. +, Mich. +, Minn. +, Mont. +, N.Dak. +, S.Dak. +, Utah. +, Wyo. +, Asia (Mongolia) +, Asia (Russian Far East) +  and Asia (Siberia) +
not +  and aggregated +
300–3200 m +
shiny-bristled +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
unisexual +  and bisexual +
not +  and aggregated +
0.14 cm1.4 mm <br />0.0014 m <br /> (0.16 cm1.6 mm <br />0.0016 m <br />) +
olivaceous +  and blackish +
ovoid-pyriform +
0.11 cm1.1 mm <br />0.0011 m <br /> (0.14 cm1.4 mm <br />0.0014 m <br />) +
Prairies, dry hilltops, knolls, outcrops, buttes, rocky and sandy soil or gravel, exposed and disturbed sites +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
campanulate +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
crassinucellate +
simple +  and compound +
alternate +  and rosulate +
winter-persistent +
cauline +  and basal +
pinnatifid +
linear-oblong +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (?) +  and 0.1 cm1 mm <br />0.001 m <br /> (?) +
pinnate +  and entire +
toothed +, unlobed +  and lobed +
inferior +  and superior +
clustered +, biseriate +  and superposed +
flat-topped +
0 (?) +  and 4 (?) +
free +  and distinct +
1.8mm;2.5mm +
cuneate-oblong;obovate +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.11 cm1.1 mm <br />0.0011 m <br />) +
0 cm0 mm <br />0 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Flowering Jun–Aug +  and fruiting Jul–Sep. +
adnate +, free +, connate +  and distinct +
in C. F. von Ledebour, Fl. Altaica +
not arillate +
bristle-tipped +
persistent +
free +  and distinct +
erect-ascending +
ovatelanceolate +
0.18 cm1.8 mm <br />0.0018 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
Illustrated +
free +  and distinct +
branched +  and simple +
reddish tinged +
palmate +  and pinnate +
persistent +
distinct +
not elongate +
stipitate-glandular +  and white-hairy +
Chamaerhodos erecta subsp. nuttallii +, C. erecta var. parviflora +  and C. nuttallii +
Chamaerhodos erecta +
Chamaerhodos +
species +
inconspicuous +
flat +  and conic or turbinate +
enlarged +
perennial +, short-lived +  and biennial +
stipitate-glandular +, soft-hairy +  and hispid-hirsute +