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

Habit Plants forming loose mats, (stems trailing), not stoloniferous, rhizomatous. Plants solitary or in usually loose tufts, not stoloniferous, weakly rhizomatous, (with bulbils).
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;

petiole ± flattened, 10–70 mm, (± hairy);

blade reniform, 5–7(–11)-lobed (lobes obtuse, sometimes acute), (5–)7.4–11.2(–20) mm, slightly fleshy, margins entire, sparsely glandular-ciliate or eciliate, apex rounded to obtuse, surfaces glabrous or sparsely short stipitate-glandular.

Inflorescences

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

bracts sessile.

2–6(–29)-flowered, capitate thyrses, sometimes solitary flowers, (flowers subsessile), (3–)5–15(–18) cm, densely tangled, reddish brown-hairy;

bracts (5–10), petiolate, (3–7-lobed, densely surrounding inflorescence).

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.

(hypanthium U-shaped in longisection);

sepals erect, oblong to ovate, margins ± glandular-ciliate, surfaces glabrous or sparsely short stipitate-glandular;

petals white, not spotted, ± broadly elliptic to obovate, 2–5(–6.5) mm, ± equaling sepals;

ovary ca. 1/2 inferior.

2n

= 26.

= 26 (Russian Far East).

Saxifraga vespertina

Saxifraga bracteata

Phenology Flowering summer. Flowering summer.
Habitat Rocky slopes, ledges, crevices Rocky ledges and slopes, coastal
Elevation 100-1800 m (300-5900 ft) 0-500 m (0-1600 ft)
Distribution
from FNA
OR; WA
[WildflowerSearch map]
[BONAP county map]
from FNA
AK; e Asia (n Japan, Russian Far East)
[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. 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. vespertina
Synonyms Leptasea vespertina, S. bronchialis subsp. vespertina, S. bronchialis var. vespertina S. laurentiana, S. rivularis var. laurentiana, S. vaginata
Name authority (Small) Fedde: Just’s Bot. Jahresber. 33(1): 613. (1906) D. Don: Trans. Linn. Soc. London 13: 367. (1822)
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