Kelseya uniflora

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

in N. L. Britton et al., N. Amer. Fl. 22: 254. 1908.

Common names: One-flower kelseya or spiraea alpine laurel
EndemicIllustrated
Basionym: Eriogynia uniflora S. Watson Proc. Amer. Acad. Arts 25: 130. 1890
Treatment appears in FNA Volume 9. Treatment on page 415.

Shrubs 3–6 dm diam. Leaves light green to grayish green, becoming brownish, marcescent, hardened. Flowers: sepals persistent, inflating radially with fruit maturity. Follicles brown, coriaceous, opening first along adaxial suture, later on abaxial suture. 2n = 18.


Phenology: Flowering Apr–Aug.
Habitat: Cracks of limestone rock outcrops
Elevation: 1800–3500 m

Discussion

Kelseya uniflora can form dense carpets or mats that may cover areas of cliff faces. The solitary flower is unique in Spiraeeae. This species is of interest as an unusual rock-garden plant; it is difficult to cultivate.

Selected References

None.

Lower Taxa

None.

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

... more about "Kelseya uniflora"
Richard Lis +
(S. Watson) Rydberg in N. L. Britton et al. +
brown +  and gray or dark gray +
compound +  and simple +
opposite +  and alternate +
Eriogynia uniflora +
oblanceolate +  and spatulate-obovate +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
villous +, glabrate +  and glabrous +
imbricate +, crowded +  and alternate +
One-flower kelseya or spiraea +  and alpine laurel +
Idaho +, Mont. +  and Wyo. +
not +  and aggregated +
1800–3500 m +
0.3 cm3 mm <br />0.003 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
hirsute +  and villous +
unisexual +  and bisexual +
3 (?) +  and 5 (?) +
villous +, hirsute +  and glabrate +
ellipsoid +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
not +  and aggregated +
not +  and aggregated +
Cracks of limestone rock outcrops +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
pseudoterminal +  and terminal +
crassinucellate +
compound +  and simple +
brownish +, light green +  and grayish green +
marcescent +
persistent +
hardened +
not visible +
toothed +, unlobed +  and lobed +
inferior +  and superior +
biseriate +  and clustered +
collateral +  and apical +
3 +  and 5 +
0 (?) +  and 4 (?) +
free +  and distinct +
Flowering Apr–Aug. +
adnate +, free +, connate +  and distinct +
in N. L. Britton et al., N. Amer. Fl. +
not arillate +
fusiform;elongate +
persistent +
free +  and distinct +
erect +  and slightly reflexed +
oblanceolate +
Endemic +  and Illustrated +
free +  and distinct +
slightly longer +
leafy +  and branched +
semierect to prostrate +
1 +  and 20 +
deciduous +
adherent +
basal +, lateral +, subterminal +  and terminal +
not elongate +
Kelseya uniflora +
species +
inconspicuous +
annular +
thickened +  and minute +