Flora of North America species comparison

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Cardamine rupicola

cliff bittercress
Habit Perennials; glabrous throughout.
Rhizomes

cylindrical, slender, 1–2 mm diam.
Stems

erect or decumbent at base, unbranched, 0.6–2 dm.
Rhizomal leaves

palmately or subpalmately compound, 3 or 5 (or 7)-foliolate, 5.5–17(–22) cm, (fleshy), petiolate, leaflets petiolulate or subsessile;

petiole 4–14(–17) cm;

lateral leaflets subsessile, blade similar to terminal, sometimes smaller;

terminal leaflet (petiolule 0.1–0.5 cm), blade ovate to lanceolate or elliptic-oblong, 1–3 cm × 6–17 mm, base cuneate or obtuse, margins entire, (apiculate).
Cauline leaves

2 or 3, 3 or 5-foliolate, petiolate, leaflets petiolulate or sessile;

petiole 0.7–4(–8) cm, base not auriculate;

lateral leaflets sessile, blade similar to terminal, smaller;

terminal leaflet petiolulate (0.1–0.5 cm), blade elliptic to oblong, or ovate, 1.2–3.5 cm × 4–25 mm, margins entire.
Racemes

ebracteate.
Flowers

sepals oblong, 3–5 × 1.5–2 mm, lateral pair saccate basally;

petals white, obovate, 8–14 × 4–7 mm, (short-clawed, apex rounded or subemarginate);

filaments: median pairs 4–5 mm, lateral pair 2.5–3.5 mm;

anthers oblong, 1–1.2 mm.
Fruiting pedicels

ascending to divaricate, 6–18 mm.
Fruits

linear, 2–4 cm × 1.5–2.2 mm;

ovules 10–14 per ovary;

style 1–5 mm.
Seeds

brown, oblong, 1.8–2.2 × 1.2–1.5 mm.

Cardamine rupicola
Phenology Flowering Jul–Aug.
Habitat Limestone talus slopes, loose limey shale, moist banks
Elevation 2200-2700 m (7200-8900 ft)
Distribution
from FNA
MT
[BONAP county map]
Discussion

Cardamine rupicola is known from Flathead, Lewis and Clarke, and Missoula counties.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 7, p. 483.
Parent taxa Brassicaceae > tribe Cardamineae > Cardamine
Sibling taxa
C. angulata, C. angustata, C. bellidifolia, C. blaisdellii, C. breweri, 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. umbellata
Synonyms C. californica var. rupicola, Dentaria rupicola
Name authority (O. E. Schulz) C. L. Hitchcock: in C. L. Hitchcock et al., Vasc. Pl. Pacif. N.W. 2: 474. (1964)
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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