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Cardamine pattersonii

Saddle Mountain bittercress

Habit Plants annual or short-lived perennial, glabrous; rhizomes cylindrical, slender, 0.5–1.5 mm in diameter.
Stems

not flexuous, 6–30 cm.

Basal leaves

rosulate or not, 3–5-foliolate, 1–6 cm;

terminal leaflets obovate to orbicular or subcordate, 0.3–1.5(2) × 0.25–1.6(1.8) cm, bases obtuse or cordate;

margins entire, dentate, or sinuate;

lateral leaflets considerably smaller.

Cauline leaves

2–4 below raceme, 3–5-foliolate, bases not auriculate.

Inflorescences

with bracts throughout, fruiting pedicels divaricate-ascending; (10)15–30(45) mm.

Flowers

sepals oblong, 2–3 mm;

lateral pair not saccate;

petals obovate, 6–9 × 3–4 mm, purple or pink, not clawed;

ovules 14–20 per ovary;

styles 2–4 mm.

Fruits

20–30 × 1–1.5 mm, glabrous.

Seeds

oblong to ovate, 1.7–2.2 × 1–1.5 mm, distally winged.

Cardamine pattersonii

Distribution
[WildflowerSearch map]
[BONAP county map]
Discussion

Moist mossy cliffs, rocky slopes, banks. Flowering Apr–Jun. 200–1000 m. CR. Native. Endemic to Oregon.

The species is known only from a limited number of collections, all made in northwestern Oregon.

Source Flora of Oregon, volume 2, page 466
Ihsan Al-Shehbaz
Sibling taxa
C. angulata, C. bellidifolia, C. breweri, C. californica, C. cordifolia, C. flexuosa, C. hirsuta, C. holmgrenii, C. nuttallii, C. occidentalis, C. oligosperma, C. parviflora, C. penduliflora, C. pensylvanica
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