Cardamine bulbosa |
Cardamine pratensis |
|
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bulb bittercress, bulbous bitter-cress, spring cress |
Brewer's bitter-cress, cuckoo bitter-cress, cuckoo flower, European field bitter-cress, lady's-smock, meadow bittercress, pink cuckoo bitter-cress |
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Habit | Perennials; glabrous or sparsely pubescent distally. | Perennials; usually glabrous, rarely sparsely pilose basally. |
Rhizomes | (tuberous at stem base, sometimes also at intervals) subglobose, lobed, 4–15 mm diam. (fleshy). |
cylindrical, (not fragile), relatively short, (not fleshy). |
Stems | erect, unbranched, (1–)2–6 dm, glabrous or sparsely pubescent on distal 1/2 (trichomes 0.02–0.1 mm). |
erect, unbranched, (0.8–)1.5–5.5(–8) dm. |
Rhizomal leaves | simple, (2–)4–13(–16) cm; petiole (1.5–)2.5–10(–13) cm; blade usually reniform to cordate or ovate, rarely oblong, (1–)2–4(–6) cm, base obtuse to cordate, margins usually repand or entire, rarely shallowly dentate. |
simple or 5–9(–31)-foliolate, to 30 cm, (thin, veins raised), leaflets petiolulate or sessile; petiole (1–)2–7(–10) cm; lateral leaflets petiolulate or sessile, blade similar to terminal or smaller, orbicular, ovate, or obovate, margins crenate or repand; terminal leaflet (petiolule to 1.5 cm), blade orbicular or broadly obovate, 0.3–2 cm diam., base usually rounded, rarely subreniform or cuneate, margins repand, (apex rounded). |
Cauline leaves | (2–)4–10(–14), simple, petiolate or sessile; (middle ones) shortly petiolate or (distally) sessile, base not auriculate; blade ovate to oblong, or oblong-linear to lanceolate, 3–6(–9) cm × 10–30(–45) mm, margins entire, repand, or dentate (margins minutely pubescent). |
2–12(–18), pinnatisect, petiolate, leaflets petiolulate or sessile, (2–17 cm including petiole, thin, veins raised); petiole base not auriculate; lobes or leaflets (4–7(–13) each side of rachis), petiolulate or sessile and decurrent, blade similar to terminal lobe or leaflet, margins usually entire, rarely dentate; terminal lobe or leaflet (petiolulate or sessile), blade linear, oblong, ovate, or lanceolate, 1–2.5(–3.5) cm × 5–8(–10) mm, (surfaces glabrous). |
Racemes | ebracteate. |
ebracteate. |
Flowers | sepals oblong, 2.5–4.5 × 1.5–2 mm, lateral pair not saccate basally, (glabrous); petals usually white, rarely pale pink, obovate, (6–)7–12(–16) × 3–5 mm, (short-clawed, apex rounded); filaments: median pairs 4.5–7 mm, lateral pair 2–3.5 mm; anthers oblong, 1–1.5 mm. |
sepals (erect or spreading), oblong or ovate, (2.5–)3–5(–6) × 1–2 mm, lateral pair saccate basally; petals usually purple or lilac, rarely white, obovate, (6–)8–15(–18) × 3–7.5(–10) mm, (clawed, apex rounded or emarginate); filaments: median pairs 5–10 mm, lateral pair 3–6 mm; anthers narrowly oblong, (0.8–)1.2–2 mm. |
Fruiting pedicels | ascending to divaricate, (10–)15–22(–30) mm. |
erect-ascending or subdivaricate, (5–)12–25(–30) mm. |
Fruits | linear, 2–3.5(–4) cm × 1.4–1.7 mm; ovules 14–24 per ovary; style 2–4(–5) mm. |
linear, (1.6–)2.5–4.5(–5) cm × (1.2–)1.5–2.3 mm; ovules 20–30 per ovary; style (0.5–)1–2.2(–2.7) mm, (stout). |
Seeds | dark orange to greenish yellow, oblong or globose, 1.7–2.1 × 1–1.4 mm. |
light brown, oblong, 1.2–1.8(–2) × 1–1.4 mm. |
2n | = 16, 56, 64, 80, 96, 112. |
= 16. |
Cardamine bulbosa |
Cardamine pratensis |
|
Phenology | Flowering Mar–Jun. | Flowering May–Aug. |
Habitat | Wet grounds, low woodland, moss hummocks, alluvial woods, grassy floodplains, wet pastures, meadows, pinelands, creek bottoms, stream banks, sandy bottoms, ditches, mesic or wet forests, swamps, marshes, seepy bluffs | Moist grounds, stream sides, limestone shores, sedge and grass meadows, marshy pond margins, mossy areas, wet hollows, boggy areas, turfy shores, damp creek banks, swamps, brooks and ditches, moist ravines, springy swales |
Elevation | 0-900 m (0-3000 ft) | 0-1000 m (0-3300 ft) |
Distribution |
AL; AR; CT; DC; DE; FL; GA; IA; IL; IN; KS; KY; LA; MA; MD; ME; MI; MN; MO; MS; NC; NE; NH; NJ; NY; OH; OK; PA; SC; SD; TN; TX; VA; VT; WI; WV; MB; ON; QC
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CT; IN; MA; ME; MI; NH; NJ; NY; OH; PA; VT; BC; NB; NF; NS; ON; QC; Eurasia
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Discussion | The taxonomy of Cardamine pratensis in North America requires further detailed study. Most, if not all, populations of this species were introduced from Europe. Some specimens resemble the European C. dentata Schultes (high polyploid, characterized by all leaves, including distalmost, pinnate with petiolate and sometimes deciduous leaflets) and these populations might be native. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 7, p. 469. | FNA vol. 7, p. 482. |
Parent taxa | Brassicaceae > tribe Cardamineae > Cardamine | Brassicaceae > tribe Cardamineae > Cardamine |
Sibling taxa | ||
Synonyms | Arabis bulbosa, Arabis rhomboidea, C. rhomboidea, C. rhomboidea var. hirsuta, C. rhomboidea var. parviflora, C. rhomboidea var. pilosa, Dentaria rhomboidea, Dracamine bulbosa | Dracamine pratensis |
Name authority | (Schreber ex Muhlenberg) Britton: Prelim. Cat., 4. (1888) | Linnaeus: Sp. Pl. 2: 656. (1753) |
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