Saxifraga tricuspidata

Rotbøll

Skr. Kiøbenhavnske Selsk. Laerd. Elsk. 10: 446. 1770 (as 3cuspidata) ,.

Common names: Prickly saxifrage saxifrage à trois dents
IllustratedEndemic
Treatment appears in FNA Volume 8. Treatment on page 142. Mentioned on page 135, 140.

Plants loosely mat-forming, (stems trailing), not stoloniferous, with elongate caudex or rhizomatous. Leaves cauline, (marcescent, crowded proximally); petiole absent; blade (often reddish), linear to cuneate, 1–3-lobed or toothed apically (distal cauline unlobed), rarely all unlobed, (lobes long spinose-mucronate), 5–20 mm, leathery, margins entire, softly glandular-ciliate, (nonsecreting hydathodes present adaxially), apex acute, long spinose-mucronate, surfaces glabrous. Inflorescences 3–10-flowered cymes, 4–10 (–24) cm, white to sparsely pink to purple-tipped stipitate-glandular; bracts sessile. Flowers: sepals erect to ascending, (sometimes purplish), triangular-ovate, margins ± glandular-ciliate, surfaces white to purple-tipped stipitate-glandular; petals white to cream, proximally to distally yellow, orange, and red-spotted, elliptic to ovate, 4–7 mm, much longer than sepals; ovary superior. 2n = 26.


Phenology: Flowering late spring–summer.
Habitat: Open sandy, gravelly, or rocky sites, forest openings, grassy slopes, rocky ridges, stony tundra
Elevation: 0-3000 m

Distribution

V8 284-distribution-map.gif

Greenland, Alta., B.C., Man., Nfld. and Labr. (Labr.), N.W.T., Nunavut, Ont., Que., Sask., Yukon, Alaska, Mich.

Discussion

The rare, entire-leaved form of Saxifraga tricuspidata can be confused with S. bronchialis; it has glandular-ciliate margins instead of stiffly hooked-ciliate ones.

Selected References

None.

Lower Taxa

None.

"full" is not a number.

... more about "Saxifraga tricuspidata"
epigynous +, perigynous +  and hypogynous +
palmate +  and pinnate +
spinose-mucronate +  and acute +
Luc Brouillet +  and Patrick E. Elvander† +
Rotbøll +
cuneate +  and cordate +
dentate +, serrate +  and entire +
glandular-ciliate +  and ciliate +
unlobed +, linear +  and cuneate 1-3-lobed or toothed +
0.5 cm5 mm <br />0.005 m <br /> (2 cm20 mm <br />0.02 m <br />) +
3-carpellate +  and 2-carpellate +
distinct +  and connate +
appearing +  and axile +
elongate +
not fleshy +
Prickly saxifrage +  and saxifrage à trois dents +
3-10-flowered +
Greenland +, Alta. +, B.C. +, Man. +, Nfld. and Labr. (Labr.) +, N.W.T. +, Nunavut +, Ont. +, Que. +, Sask. +, Yukon +, Alaska +  and Mich. +
0-3000 m +
flattened +
bracteate +  and 2-200[-1000]-flowered +
40 cm400 mm <br />0.4 m <br /> (100 cm1,000 mm <br />1 m <br />) +
1 cm10 mm <br />0.01 m <br /> (40 cm400 mm <br />0.4 m <br />) +
2-3(-4)-beaked +  and folliclelike +
Open sandy, gravelly, or rocky sites, forest openings, grassy slopes, rocky ridges, stony tundra +
multicellular +
glabrous +, stipitate-glandular +  and hairy +
pink +  and purple +
free +  and adnate +
10 cm100 mm <br />0.1 m <br /> (24 cm240 mm <br />0.24 m <br />) +
white +  and sparsely pink +
stipitate-glandular +
4 cm40 mm <br />0.04 m <br /> (10 cm100 mm <br />0.1 m <br />) +
reduced +
glandular-ciliate +
0 cm0 mm <br />0 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
crassinucellate +, unitegmic +  and bitegmic +
epigynous +, perigynous +  and hypogynous +
red-spotted +, orange +, white +  and cream +
distinct +
elliptic +  and ovate +
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
peltate +  and jointed +
Flowering late spring–summer. +
unequal +
Skr. Kiøbenhavnske Selsk. Laerd. Elsk. +
spiny +  and ribbed +
straight +
papillate +, tuberculate +  and smooth +
ovoid +, ellipsoid +  and oblong +
reddish +  and green +
distinct +
erect +  and ascending +
triangular-ovate +
Illustrated +  and Endemic +
unbranched +  and branched +
persistent +
horizontal +  and erect +
connate +  and distinct +
purple-tipped +
stipitate-glandular +  and glabrous +
Saxifraga tricuspidata +
Saxifraga +
species +
dentate +, serrate +  and entire +
rhizomatous +  and not stoloniferous +
plant +  and mat-forming +
14 +, 13 +, 11 +, 8 +  and 6 +