Cardamine impatiens |
Cardamine bellidifolia |
|
---|---|---|
narrow-leaf bitter-cress |
alpine bitter-cress |
|
Habit | Biennials or, rarely, annuals; usually glabrous, rarely sparsely pubescent basally. | Perennials (somewhat cespitose, subscapose); glabrous throughout. |
Rhizomes | absent. |
absent (caudex usually with slender, rarely stout, rhizomelike branches). |
Stems | erect, (angled, sometimes flexuous), unbranched basally, usually branched distally, (1.2–)2–6.5(–9) dm. |
erect to ascending, branched (several), 0.1–0.8(–1.4) dm, glabrous. |
Basal leaves | (often withered by flowering), rosulate, similar to cauline, with fewer distal leaflets. |
rosulate, simple, (0.6–)1.2–5(–7) cm; petiole (3–)1–3.5(–5.5) cm; blade usually ovate to oblong, rarely oblanceolate to obovate, (0.4–)0.8–1.7(–2.5) cm × (2–)5–10(–16) mm, base cuneate to obtuse, margins usually entire, rarely repand or obtusely small-toothed (apex obtuse). |
Cauline leaves | 9–24, (9–)13–25-foliolate, petiolate, leaflets petiolulate; petiole 2–6 cm, base auriculate (auricles to 10 × 2.2 mm); lateral leaflets similar to terminal, blade often smaller; terminal leaflet (petiolule to 0.5 cm), blade orbicular, obovate, ovate, or lanceolate, 1–4(–5) cm × 5–17 mm, margins entire or 3–5(–9)-toothed or -lobed. |
0 or 1 (or 2), simple, shortly petiolate; petiole base not auriculate; blade similar to basal leaves, much smaller. |
Racemes | ebracteate. |
ebracteate. |
Flowers | sepals oblong, 1.2–2(–2.5) × 0.7–1(–1.2) mm, lateral pair not saccate basally; petals (rarely absent), white, oblanceolate, 1.5–4(–5) × 0.6–1.2 mm; filaments 2–3(–4) mm; anthers ovate, 0.3–0.5 mm. |
sepals oblong, 2–3(–4) × 0.8–1.5(–2) mm, lateral pair not saccate basally; petals white, oblanceolate, 4–5.5(–7) × 1.3–2(–2.5) mm (not clawed, apex rounded or emarginate); filaments: median pairs 2.5–4 mm, lateral pair 2–3 mm; anthers oblong, 0.5–0.9 mm. |
Fruiting pedicels | divaricate or ascending, 3.5–12(–15) mm. |
ascending to erect, 3–6(–8) mm. |
Fruits | linear, (torulose), (1–)1.6–3(–3.5) cm × 0.9–1.5 mm; (valves glabrous or, rarely, pilose); ovules 10–30 per ovary; style 0.6–1.6(–2) mm. |
linear, (0.8–)1.3–2.8(–3.7) cm × 1.3–2 mm; ovules 8–18 per ovary; style 0.5–3 mm. |
Seeds | brown, oblong, 1.1–1.5 × 0.8–1 mm, (compressed, sometimes narrowly winged apically). |
brown, oblong, 1.5–2 × 0.9–1.2 mm. |
2n | = 16. |
= 16. |
Cardamine impatiens |
Cardamine bellidifolia |
|
Phenology | Flowering May–Jul. | Flowering Jun–Sep. |
Habitat | Streamsides, slopes, roadsides, fields, disturbed areas | Mossy areas, tundra, marshes at stream headwaters, cliffs, talus slopes, barren chert slopes, moist rock crevices, rocky slopes, alpine streams, sandy beaches, moist rocky streambeds |
Elevation | 0-200 m (0-700 ft) | 0-2300 m (0-7500 ft) |
Distribution |
CT; KY; MI; MN; NH; OH; PA; VA; WV; ON; Eurasia [Introduced in North America; introduced also in South Africa]
|
AK; CA; ME; NH; OR; WA; AB; BC; LB; NT; NU; QC; YT; Greenland; n Europe; Asia (Russian Far East, Siberia)
|
Source | FNA vol. 7, p. 476. | FNA vol. 7, p. 468. |
Parent taxa | Brassicaceae > tribe Cardamineae > Cardamine | Brassicaceae > tribe Cardamineae > Cardamine |
Sibling taxa | ||
Synonyms | C. impatiens var. angustifolia | C. bellidifolia var. beringensis, C. bellidifolia var. laxa, C. bellidifolia var. pachyphylla, C. bellidifolia var. pinnatifida |
Name authority | Linnaeus: Sp. Pl. 2: 655. (1753) | Linnaeus: Sp. Pl. 2: 654. (1753) |
Web links |
|