Cardamine longii |
Cardamine purpurea |
|
---|---|---|
long's bitter-cress |
purple bittercress |
|
Habit | Perennials; glabrous throughout. | Perennials; (often cespitose); hirsute. |
Rhizomes | cylindrical, slender, 0.8–1.5 mm diam. |
vertical, 1–3 mm diam., (not fleshy). |
Stems | prostrate to decumbent or erect, unbranched or branched, 0.5–4(–6) dm. |
(simple or few to several from base), usually erect, unbranched, (0.3–)0.5–1.2(–1.5) dm. |
Basal leaves | sometimes rosulate, usually 3 or 5-foliolate, rarely simple, (1.5–)2.5–7 cm, leaflets petiolulate or sessile; petiole (1.2–)2–5 cm; lateral lobes or leaflets sessile, blade similar to terminal, distinctly smaller; terminal lobe or leaflet petiolulate (0.05–0.6 cm), blade reniform or suborbicular to broadly ovate, 0.3–1 cm × 4–15 mm, base subcordate to rounded, margins entire, repand, or obscurely 2-toothed. |
|
Rhizomal leaves | absent. |
|
Cauline leaves | 3–10, usually simple, rarely 3 or 5-foliolate, petiolate; petiolulate or sessile; petiole 0.4–2.5 cm, base not auriculate; lateral leaflets (when present) sessile or petiolulate (to 0.2 cm), blade similar to terminal, considerably smaller; terminal leaflet blade orbicular to reniform or ovate to oblong, 0.4–3 cm × 3–20 mm, (somewhat fleshy), base subcordate to rounded or subtruncate, margins entire or repand, rarely undulate, (apex rounded). |
1–3, usually compound, rarely simple, petiolate, leaflets petiolulate or sessile; petiole (0.2–)0.5–2 cm, base not auriculate; similar to basal, smaller. |
Racemes | ebracteate. |
ebracteate. |
Flowers | sepals ovate, 0.7–1.2 × 0.5–0.7 mm, lateral pair not saccate basally; petals absent or rudimentary, to 0.7 mm; filaments 0.5–0.8 mm; anthers ovate, 0.1–0.2 mm. |
sepals oblong, 2–3(–4) × 1.4–1.7 mm, lateral pair not saccate basally; petals usually purple to pink, rarely white, obovate, 5–7(–9) × 3–4(–5) mm, (clawed, apex rounded); filaments: median pairs 2.5–3.5 mm, lateral pair 1.5–3.5 mm; anthers oblong, 0.6–0.9 mm. |
Fruiting pedicels | divaricate-ascending to spreading, 0.5–2(–4) mm. |
suberect, ascending, or divaricate, 5–12 mm, pubescent. |
Fruits | narrowly oblong to linear, (3–)5–10(–15) × 0.8–1.2 mm; ovules 6–22 per ovary; style 0.2–0.5(–1) mm. |
linear, 1.5–2.5 cm × 1.5–1.8 mm; ovules 10–14 per ovary; style 1–2.5 mm. |
Seeds | light or yellowish brown, oblong or ovoid, 1–1.4 × 0.7–1 mm. |
brown, oblong to broadly ovoid, 1.7–2.1 × 1.4–1.7 mm. |
2n | = 96. |
|
Cardamine longii |
Cardamine purpurea |
|
Phenology | Flowering Jun–Sep. | Flowering Jun–Aug. |
Habitat | Tidal marshes, mud flats, tidal shores of rivers, shallow water, swampy areas, shady rocky crevices covered at high tide | Moist tundra, damp woods and ravines, alpine turf, river flats, peaty subarctic meadows, streamsides, moist slopes |
Elevation | 0-10 m (0-0 ft) | 600-1800 m (2000-5900 ft) |
Distribution |
FL; MA; MD; ME; NC; NJ; NY; SC; VA |
AK; YT; e Asia (Russian Far East) |
Source | FNA vol. 7, p. 476. | FNA vol. 7, p. 483. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | C. purpurea var. albiflora, C. purpurea var. albiflos, C. purpurea var. lactiflora | |
Name authority | Fernald: Rhodora 19: 91. (1917) | Chamisso & Schlechtendal: Linnaea 1: 20. (1826) |
Web links |