Cardamine bulbosa |
Cardamine douglassii |
|
---|---|---|
bulb bittercress, bulbous bitter-cress, spring cress |
limestone bittercress, pink bitter-cress |
|
Habit | Perennials; glabrous or sparsely pubescent distally. | Perennials; hirsute throughout or glabrous proximally. |
Rhizomes | (tuberous at stem base, sometimes also at intervals) subglobose, lobed, 4–15 mm diam. (fleshy). |
(tuberous at stem base), subglobose, (lobed or not), (3–)4–10 mm diam., (fleshy). |
Stems | erect, unbranched, (1–)2–6 dm, glabrous or sparsely pubescent on distal 1/2 (trichomes 0.02–0.1 mm). |
erect, unbranched, (0.7–)1–2.5(–3) dm, sparsely to densely hirsute, or glabrous basally, (trichomes (0.2–)0.3–0.6(–0.8) mm). |
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, (3–)5–15(–18) cm; petiole (2–)4–12(–16) cm; blade often orbicular to cordate, sometimes reniform or ovate, (1–)2–6 cm × (7–)17–50 mm, base obtuse to cordate, margins repand or entire. |
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). |
3–6(–8), simple, petiolate or sessile; (middle) shortly petiolate or (distal) sessile, base not auriculate; blade oblong to ovate or lanceolate, 2–5 cm × 5–25 mm, margins entire, repand, or coarsely dentate. |
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 oblong, 2.5–4(–6) × 1.5–2.5 mm, lateral pair not saccate basally, (surfaces often hirsute); petals usually rose-purple to pink, rarely white, obovate, (7–)8–13(–15) × 3–5 mm, (short-clawed, apex rounded); filaments: median pairs 4–7 mm, lateral pair 2–4 mm; anthers oblong, 1.3–1.7 mm. |
Fruiting pedicels | ascending to divaricate, (10–)15–22(–30) mm. |
ascending to divaricate, (10–)15–35(–50) mm, sparsely pubescent or glabrous. |
Fruits | linear, 2–3.5(–4) cm × 1.4–1.7 mm; ovules 14–24 per ovary; style 2–4(–5) mm. |
linear, (1.5–)2–4 cm × 1.5–2 mm; ovules 10–16 per ovary; style 2–5 mm. |
Seeds | dark orange to greenish yellow, oblong or globose, 1.7–2.1 × 1–1.4 mm. |
brown, oblong to ovoid, 1.7–2.5 × 1–5 mm. |
2n | = 16, 56, 64, 80, 96, 112. |
= 56, 64, 96, 112, 144. |
Cardamine bulbosa |
Cardamine douglassii |
|
Phenology | Flowering Mar–Jun. | Flowering Mar–May. |
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 | Rich woods, bluffs, mesic bottomland forests, rocky hillsides, floodplains, seepage of bogs, springy areas |
Elevation | 0-900 m (0-3000 ft) | 50-400 m (200-1300 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
|
AL; CT; DC; IA; IL; IN; KY; MA; MD; MI; MN; MO; NC; NJ; NY; OH; PA; SC; TN; VA; WI; WV; ON
|
Source | FNA vol. 7, p. 469. | FNA vol. 7, p. 473. |
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 | Arabis rhomboidea var. purpurea, Dentaria douglassii, Dracamine purpurea, Thlaspi tuberosum |
Name authority | (Schreber ex Muhlenberg) Britton: Prelim. Cat., 4. (1888) | Britton: Trans. New York Acad. Sci. 9: 8. (1889) |
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