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Matted saxifrage, saxifraga vespertina, spotted saxifrage, yellow dot saxifrage

Habit Plants forming loose mats, (stems trailing), not stoloniferous, rhizomatous. Plants in tufts, not stoloniferous, weakly rhizomatous (with bulbils at leaf bases).
Leaves

cauline (crowded proximally);

petiole absent;

blade spatulate, unlobed or minutely 3-toothed or -lobed apically, 4–11 mm, leathery, margins entire, (not cartilaginous), stiffly ciliate, apex rounded or obtuse, mucronate, surfaces glabrous.

basal and cauline (basal ephemeral);

petiole flattened, 5–15 mm;

blade reniform, 5–7-lobed usually more than halfway to midvein (cauline less-lobed distally), 5–20 mm, thin to slightly fleshy, margins entire, eciliate, apex obtuse to acute, surfaces glabrous or glabrate to ± long-hairy.

Inflorescences

3–6-flowered cymes, 2.5–12 cm, pink- to purple-tipped stipitate-glandular;

bracts sessile.

2–5-flowered cymes, 5–18 cm, purple-tipped stipitate-glandular;

bracts petiolate.

Flowers

sepals erect, ovate to oblong, margins sparsely ciliate, surfaces glabrous;

petals white to cream, yellow-spotted proximally, red- or orange-spotted distally, these often faded in dried specimens, elliptic, 4–6 mm, much longer than sepals;

ovary superior.

sepals erect, (sometimes purplish), ovate to lanceolate, margins glandular-ciliate or eciliate, surfaces glabrous;

petals white, sometimes with purple veins, not spotted, obovate to narrowly oblanceolate, 7–15 mm, longer than sepals;

ovary 1/4–1/3 inferior.

2n

= 26.

= 26, 48, 52.

Saxifraga vespertina

Saxifraga radiata

Phenology Flowering summer. Flowering summer.
Habitat Rocky slopes, ledges, crevices Snow-bed meadows, stream banks
Elevation 100-1800 m (300-5900 ft) 0-1500 m (0-4900 ft)
Distribution
from FNA
OR; WA
[WildflowerSearch map]
[BONAP county map]
from FNA
AK; NT; YT; Asia (Siberia)
[BONAP county map]
Source FNA vol. 8, p. 142. FNA vol. 8, p. 143.
Parent taxa Saxifragaceae > Saxifraga Saxifragaceae > Saxifraga
Sibling taxa
S. adscendens, S. aizoides, S. aleutica, S. bracteata, S. bronchialis, S. cernua, S. cespitosa, S. cherlerioides, S. chrysantha, S. debilis, S. eschscholtzii, S. flagellaris, S. hirculus, S. hyperborea, S. mertensiana, S. nathorstii, S. oppositifolia, S. paniculata, S. radiata, S. rivularis, S. serpyllifolia, S. taylorii, S. tricuspidata, S. tridactylites
S. adscendens, S. aizoides, S. aleutica, S. bracteata, S. bronchialis, S. cernua, S. cespitosa, S. cherlerioides, S. chrysantha, S. debilis, S. eschscholtzii, S. flagellaris, S. hirculus, S. hyperborea, S. mertensiana, S. nathorstii, S. oppositifolia, S. paniculata, S. rivularis, S. serpyllifolia, S. taylorii, S. tricuspidata, S. tridactylites, S. vespertina
Synonyms Leptasea vespertina, S. bronchialis subsp. vespertina, S. bronchialis var. vespertina S. exilis
Name authority (Small) Fedde: Just’s Bot. Jahresber. 33(1): 613. (1906) Small: in N. L. Britton et al., N. Amer. Fl. 22: 128. (1905)
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