Flora of North America species comparison

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Cardamine pattersonii
Cardamine pattersonii

Saddle Mountain bitter-cress
Habit Annuals or perennials; (short-lived); glabrous throughout.
Rhizomes

cylindrical, slender, 0.5–1.5 mm diam.
Stems

(simple from base), erect, (not flexuous), unbranched or branched basally, 0.6–3 dm.
Basal leaves

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

petiole 0.4–2.5 cm;

lateral leaflets similar to terminal, considerably smaller;

terminal leaflet (petiolule 0.1–0.4 cm), blade obovate to orbicular or subcordate, 0.3–1.5(–2.0) cm × 2.5–16(–18) mm, base obtuse to rounded or cordate, margins entire or dentate to slightly sinuately lobed.
Cauline leaves

2–4, 3 or 5-foliolate, blade similar to basal, gradually reduced in size as bract, distalmost ones subtending pedicels of flowers (usually simple);

leaflet blade or bract linear to linear-oblanceolate, 0.2–0.8 cm.
Racemes

bracteate throughout.
Flowers

sepals oblong, (2–)3 × 0.7(–1) mm, lateral pair not saccate basally;

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

filaments: median pairs 3–3.5 mm, lateral pair 2–2.5 mm;

anthers oblong, 0.7–1 mm.
Fruiting pedicels

divaricate-ascending, (10–)15–30(–45) mm.
Fruits

linear, (torulose), 2–3 cm × 1–1.5 mm;

ovules 14–20 per ovary;

style 2–4 mm.
Seeds

brown, oblong to ovoid, 1.7–2.2 × 1–1.5 mm, (winged distally).

Cardamine pattersonii
Phenology Flowering May–Jun.
Habitat Moist mossy cliffs, rocky slopes, mossy banks
Elevation 800-900 m (2600-3000 ft)
Distribution
from FNA
OR
[WildflowerSearch map]
[BONAP county map]
Discussion

Of conservation concern.

Cardamine pattersonii is known from Saddle Mountain and Onion Peak in Clastop County.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 7, p. 480.
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. penduliflora, C. pensylvanica, C. pratensis, C. purpurea, C. rotundifolia, C. rupicola, C. umbellata
Name authority L. F. Henderson: Rhodora 32: 25. (1930)
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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