Flora of North America species comparison

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Cardamine breweri

Brewer's bitter-cress, round bittercress
Habit Perennials; usually glabrous, rarely sparsely pubescent basally.
Rhizomes

cylindrical, slender (rarely slightly thickened at stem base), 1–3(–4) mm diam.
Stems

erect or decumbent basally, unbranched or branched, (0.6–)1.5–6(–7) dm.
Rhizomal leaves

absent.
Cauline leaves

3–8(–11), 3 or 5-foliolate (rarely only terminal leaflet present), petiolate, leaflets petiolulate or subsessile;

petiole (0.7–)1–4(–6) cm, base not auriculate;

lateral leaflets (when present) subsessile or petiolulate (to 0.4 cm), blade similar to terminal, often much smaller and narrower than terminal;

terminal leaflet (petiolule 0.4–1.6 cm), blade usually ovate to orbicular, rarely subcordate, 1.5–4(–5) cm × 15–35(–50) mm, base truncate, rounded, or cordate, margins crenate, dentate, sinuate, or to 11-lobed.
Racemes

ebracteate.
Flowers

sepals oblong, 2–3(–3.8) × 1–1.5 mm, lateral pair not saccate basally;

petals white, oblanceolate, 3.5–6(–7) × 1.5–2.5(–3) mm (not clawed, apex rounded or ± emarginate);

filaments: median pairs 2.5–3.5 mm, lateral pair 2–2.5 mm;

anthers oblong, 0.7–1 mm.
Fruiting pedicels

ascending to divaricate-ascending, (7–)10–20 mm.
Fruits

linear, 1.5–3.5 cm × 1–1.5 mm;

ovules 14–28 per ovary;

style 0.2–1.5(–2.5) mm.
Seeds

brown, oblong, 1–1.6 × 0.9–1.1 mm.

Cardamine breweri
Phenology Flowering Jun–Jul.
Habitat Stream banks, seepage, lakeshores, creeks, wet meadows, swamps, ponds
Elevation 1200-3000 m (3900-9800 ft)
Distribution
from FNA
CA; CO; ID; MT; NV; OR; UT; WA; WY; BC
[WildflowerSearch map]
[BONAP county map]
Source FNA vol. 7, p. 469.
Parent taxa Brassicaceae > tribe Cardamineae > Cardamine
Sibling taxa
C. angulata, C. angustata, C. bellidifolia, C. blaisdellii, C. bulbosa, C. californica, C. clematitis, C. concatenata, C. constancei, C. cordifolia, C. digitata, C. diphylla, C. dissecta, C. douglassii, C. flagellifera, C. flexuosa, C. hirsuta, C. holmgrenii, C. impatiens, C. longii, C. macrocarpa, C. maxima, C. micranthera, C. microphylla, C. nuttallii, C. nymanii, C. occidentalis, C. oligosperma, C. pachystigma, C. parviflora, C. pattersonii, C. penduliflora, C. pensylvanica, C. pratensis, C. purpurea, C. rotundifolia, C. rupicola, C. umbellata
Synonyms C. breweri var. leibergii, C. breweri var. orbicularis, C. breweri var. oregana, C. callosicrenata, C. foliacea, C. hederifolia, C. leibergii, C. modocensis, C. orbicularis, C. oregana, C. vallicola, C. vallicola subsp. leibergii
Name authority S. Watson: Proc. Amer. Acad. Arts 10: 339. (1875)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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