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rock toothwort, serpentine bittercress

Habit Perennials; glabrous.
Rhizomes

ovoid to oblong, (3–)4–18 mm diam., (fleshy, deeply underground).

Stems

erect, unbranched, 1–3 dm.

Rhizomal leaves

simple, 1.2–2.3 cm;

petiole 6.7–19.5 cm;

blade orbicular to reniform, or cordate to broadly ovate, 2.7–5.5 cm × 30–68 mm, base cordate to subtruncate, margins with obtuse teeth terminating in apiculae.

Cauline leaves

2–5, (crowded distally), simple;

petiole 0.3–2.6 cm, base not auriculate;

blade similar to basal, 1.8–5.5 cm × 12–47mm, base cuneate or obtuse to subcordate, marginal teeth apiculate.

Racemes

ebracteate.

Flowers

sepals oblong, 4–7 × 2–2.5 mm, lateral pair saccate basally;

petals usually pink or purple, rarely white, obovate to oblanceolate, 14–18 × 5–7 mm, (claw to 9 mm, apex rounded);

filaments: median pairs 7–8 mm, lateral pair 5.5–6.5 mm;

anthers oblong, ca. 1.5 mm.

Fruiting pedicels

divaricate to ascending, 7–24 mm.

Fruits

linear, 3.2–5.4 cm × 2.2–4 mm;

ovules 10–14 per ovary;

style 4–7 mm.

Seeds

brown, broadly ovoid, 2–2.8 × 1.8–2.5 mm.

Cardamine pachystigma

Phenology Flowering Mar–May.
Habitat Forests, lava slides, talus, cliffs
Elevation 700-2900 m (2300-9500 ft)
Distribution
from FNA
CA
[WildflowerSearch map]
[BONAP county map]
Discussion

Cardamine pachystigma is known from the disjunct counties of Plumas, Tehama, and Tulare.

(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. parviflora, C. pattersonii, C. penduliflora, C. pensylvanica, C. pratensis, C. purpurea, C. rotundifolia, C. rupicola, C. umbellata
Synonyms Dentaria californica var. pachystigma, C. californica var. pachystigma, Dentaria corymbosa var. grata, Dentaria pachystigma
Name authority (S. Watson) Rollins: Harvard Pap. Bot. 1(4): 45. (1993)
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