Luetkea pectinata

(Pursh) Kuntze

Revis. Gen. Pl. 1: 217. 1891.

Common names: Partridge foot
EndemicIllustrated
Basionym: Saxifraga pectinata Pursh Fl. Amer. Sept. 1: 312. 1813
Synonyms: Eriogynia pectinata (Pursh) Hooker Luetkea sibbaldioides Bongard Spiraea pectinata (Pursh) Torrey & A. Gray
Treatment appears in FNA Volume 9. Treatment on page 422.

Leaves marcescent; petiole 5–10 mm, narrowly winged; blade green to grayish green, veins abaxially ribbed, adaxially grooved. Flowers: sepals glabrous or sparsely pilose; stamens inserted outside edge of disc. Follicles opening along both sutures, coriaceous. 2n = 18.


Phenology: Flowering Jun–Sep.
Habitat: Rocky substrates, tundra, mesic to wet forest openings, heaths, meadows, seepage areas
Elevation: 0–3500 m

Distribution

V9 711-distribution-map.jpg

Alta., B.C., N.W.T., Yukon, Alaska, Calif., Idaho, Mont., Oreg., Wash.

Discussion

In an ecological study of competition in subalpine meadows in Deer Park, Olympic National Park, Washington, R. del Moral (1983) found that Luetkea pectinata occurred in colder sites, with lower relative drought stress, and moderately low net above-ground productivity (115 and 185 g/m2/yr). Although not focused on L. pectinata, detailed work by del Moral evaluated microsite and microclimatic variation where L. pectinata is able to survive and may be useful in evaluating other sites where L. pectinata forms clonal carpets or where it is a component of a plant association. In contrast to the subalpine studies by del Moral, B. McAvoy (1931) presented a detailed study of plant associations in the Bella Coola Valley, British Columbia, from tidal flats to the alpine zone. She described some of the associations in which L. pectinata occurs, and the range of habitats in which it can occur within a limited geographic region.

At higher latitudes (48–65°), Luetkea pectinata ranges from sea level on rocky substrates to open tundra, high elevation alpine tundra, heaths, and other rocky moist habitats with well-drained thin soils. At lower latitudes (40–50°), the southern end of its range, it occurs at or above timberline in mesic to wet forest openings and edges of tree clumps, meadows, heathlands, open rocky slopes and mossy seepage areas, and in subalpine and alpine zones, often forming dense carpets or mats. Plants of L. pectinata appear to be shade intolerant.

Selected References

None.

Lower Taxa

None.
... more about "Luetkea pectinata"
Richard Lis +
(Pursh) Kuntze +
compound +  and simple +
opposite +  and alternate +
Saxifraga pectinata +
green +  and grayish green +
lobed +  and obtrullate +
0.5 cm5 mm <br />0.005 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
2-ternate +  and simple +
crowded +  and alternate +
Partridge foot +
Alta. +, B.C. +, N.W.T. +, Yukon +, Alaska +, Calif. +, Idaho +, Mont. +, Oreg. +  and Wash. +
not +  and aggregated +
0–3500 m +
0.3 cm3 mm <br />0.003 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
unisexual +  and bisexual +
truncated +  and falcate +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
not +  and aggregated +
not +  and aggregated +
Rocky substrates, tundra, mesic to wet forest openings, heaths, meadows, seepage areas +
villous +  and glabrous +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
5-20(-30)-flowered +
crassinucellate +
compound +  and simple +
marcescent +
persistent +
actinodromous +
suprabasal +
toothed +, unlobed +  and lobed +
inferior +  and superior +
biseriate +  and clustered +
collateral +  and apical +
3 +  and 5 +
0 (?) +  and 4 (?) +
free +  and distinct +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Flowering Jun–Sep. +
adnate +, free +, connate +  and distinct +
Revis. Gen. Pl. +
glabrescent +  and villous +
not arillate +
elongate-fusiform +
persistent +
free +  and distinct +
spreading +  and erect +
pilose +  and glabrous +
deltate +
Endemic +  and Illustrated +
free +  and distinct +
branched +  and simple +
1 +  and 5 +
deciduous +
distinct +
basal +, lateral +, subterminal +  and terminal +
not elongate +
Eriogynia pectinata +, Luetkea sibbaldioides +  and Spiraea pectinata +
Luetkea pectinata +
species +
inconspicuous +
10-lobed +
thickened +  and minute +
stoloniferous +  and rhizomatous +
subshrub +  and mat-forming +