Chrysosplenium rosendahlii

Packer

Canad. J. Bot. 41: 89, plates 1, 2, figs. 6, 7. 1963 ,.

Common names: Rosendahl’s golden-saxifrage
Synonyms: Chrysosplenium alternifolium var. rosendahlii (Packer) B. Boivin
Treatment appears in FNA Volume 8. Treatment on page 74. Mentioned on page 71, 72.

Stolons white, 0.3–1 mm diam., sparsely villous, hairs white, reddish-brown, or purplish. Flowering-stems erect, branching in distal 1/10–1/4 (–1/2), (1.8–) 4–10 cm, glabrous. Leaves alternate, membranous or fleshy. Stolon leaves: petiole 4–21 mm, sparsely villous or, rarely, glabrous, hairs white or reddish-brown; blade depressed-ovate, depressed-elliptic, or reniform, 4–8 × 4–10 mm, base cordate, margins 5–7-crenate, not purple-spotted, glabrous or sparsely ciliate, hairs white, surfaces sparsely villous, hairs white, sometimes purplish, especially near petiole. Cauline leaves absent or 1 (–2); petiole 1–13 mm, glabrous or villous, hairs purplish; blade depressed-ovate to reniform or flabellate, 3–5 × 3.5–7 mm, base cordate to truncate, margins 3–5 (–7) -crenate, glabrous, surfaces glabrous or villous, hairs scattered, purplish. Inflorescences terminal, 3–15-flowered, compact cymes; bracts greenish yellow, sometimes purple-spotted, foliaceous, depressed-ovate to flabellate, 2–5 × 3–9 mm, margins subentire or 3–5-crenate. Pedicels absent or 0.1–1 mm. Flowers: hypanthium green or yellowish, usually purple-spotted, campanulate, 1.8–2.2 × 1.8–3 mm, glabrous; sepals spreading, green or greenish yellow, usually purple-spotted distally, rarely not purple-spotted, broadly ovate to depressed-ovate, 1–1.6 × 1.4–2.2 mm, apex obtuse to rounded; nectary disc apparently absent; stamens 5–8, 0.5–0.8 mm; anthers yellow, 0.2–0.4 × 0.2–0.4 mm; styles 0.3–0.4 (–0.5) mm. Seeds 7–26, reddish-brown, ovoid to ellipsoid, 0.8–1.1 mm, glabrous. 2n = 96.


Phenology: Flowering Jun–Aug.
Habitat: Wet sedge meadows, moist depressions, marshy ground, bogs
Elevation: 0-100 m

Discussion

Chrysosplenium rosendahlii appears to be restricted in Canada to southern islands of the Canadian Arctic Archipelago and coastal areas of the mainland in northern Nunavut. Alaskan records extend from Beaufort Lagoon west to the vicinity of Prudhoe Bay. We have not seen specimens from coastal Yukon, Northwest Territories, or western Nunavut, where suitable habitat exists. Across its range, C. rosendahlii may be overlooked because of its similarity to C. tetrandrum.

J. G. Packer (1963) reported that flowers very rarely bear five sepals. L.-P. Ronse Decraene et al. (1998) reported this atavism also in Chrysosplenium alternifolium Linnaeus. No such flowers were observed among specimens examined for this study.

Selected References

None.

Lower Taxa

None.

"full" is not a number.

epigynous +, perigynous +  and hypogynous +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.04 cm0.4 mm <br />4.0e-4 m <br />) +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.04 cm0.4 mm <br />4.0e-4 m <br />) +
obtuse +  and rounded +
Craig C. Freeman +  and Nicholas D. Levsen +
Packer +
cordate +  and truncate +
depressed-elliptic +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
dentate +, serrate +  and entire +
glandular-ciliate +  and ciliate +
depressed-ovate +  and reniform or flabellate +
0.35 cm3.5 mm <br />0.0035 m <br /> (?) +  and 0.7 cm7 mm <br />0.007 m <br /> (?) +
purple-spotted +  and greenish yellow +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
depressed-ovate;flabellate +
0.3 cm3 mm <br />0.003 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
3-carpellate +  and 2-carpellate +
Rosendahl’s golden-saxifrage +
ebracteate +, bracteate +  and 2-300(-1000+)-flowered +
Nunavut +  and Alaska. +
0-100 m +
lanceolate +  and narrowly oblong +
unisexual +  and bisexual +
1.2 cm12 mm <br />0.012 m <br /> (2 cm20 mm <br />0.02 m <br />) +
2 cm20 mm <br />0.02 m <br /> (30 cm300 mm <br />0.3 m <br />) +
2-3(-4)-beaked +  and folliclelike +
Wet sedge meadows, moist depressions, marshy ground, bogs +
multicellular +
purplish +, white +  and reddish-brown +
purple-spotted +, yellowish +  and green +
free +  and adnate +
1.8mm;2.2mm +
campanulate +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
fleshy +  and membranous +
not purple-spotted +
glabrous +  and ciliate +
3-5-crenate +, subentire +, 3-5(-7)-crenate +  and 5-7-crenate +
marginal +, superior +  and inferior +
crassinucellate +, unitegmic +  and bitegmic +
epigynous +, perigynous +  and hypogynous +
distinct +
unlobed +  and lobed +
peltate +  and jointed +
villous +, glabrous +  and , +
0.1 cm1 mm <br />0.001 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
Flowering Jun–Aug. +
unequal +
Canad. J. Bot. +
spiny +  and ribbed +
reddish-brown +
straight +
muricate +, cellular-rugulose +, tuberculate +, pitted +, papillate +  and wrinkled +
ovoid +  and ellipsoid +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.11 cm1.1 mm <br />0.0011 m <br />) +
purple-spotted +, greenish yellow +  and green +
distinct +
broadly ovate +  and depressed-ovate +
0.14 cm1.4 mm <br />0.0014 m <br /> (0.22 cm2.2 mm <br />0.0022 m <br />) +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
unbranched +  and branched +
persistent +
horizontal +  and erect +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
connate +  and distinct +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.04 cm0.4 mm <br />4.0e-4 m <br />) +
villous +  and glabrous +
lobed +, truncate +, rounded +  and obtuse +
Chrysosplenium alternifolium var. rosendahlii +
Chrysosplenium rosendahlii +
Chrysosplenium +
species +
crenate-dentate +, crenulate +, crenate +  and subentire +
stoloniferous +  and rhizomatous +
annual +, biennial +  and perennial +