Cardamine pattersonii |
Cardamine bulbosa |
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Saddle Mountain bitter-cress |
bulb bittercress, bulbous bitter-cress, spring cress |
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Habit | Annuals or perennials; (short-lived); glabrous throughout. | Perennials; glabrous or sparsely pubescent distally. |
Rhizomes | cylindrical, slender, 0.5–1.5 mm diam. |
(tuberous at stem base, sometimes also at intervals) subglobose, lobed, 4–15 mm diam. (fleshy). |
Stems | (simple from base), erect, (not flexuous), unbranched or branched basally, 0.6–3 dm. |
erect, unbranched, (1–)2–6 dm, glabrous or sparsely pubescent on distal 1/2 (trichomes 0.02–0.1 mm). |
Basal leaves | rosulate or not, 3 or 5-foliolate, 1–6 cm, leaflets petiolulate; petiole 0.4–2.5 cm; lateral leaflets similar to terminal, considerably smaller; terminal leaflet (petiolule 0.1–0.4 cm), blade obovate to orbicular or subcordate, 0.3–1.5(–2.0) cm × 2.5–16(–18) mm, base obtuse to rounded or cordate, margins entire or dentate to slightly sinuately lobed. |
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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. |
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Cauline leaves | 2–4, 3 or 5-foliolate, blade similar to basal, gradually reduced in size as bract, distalmost ones subtending pedicels of flowers (usually simple); leaflet blade or bract linear to linear-oblanceolate, 0.2–0.8 cm. |
(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). |
Racemes | bracteate throughout. |
ebracteate. |
Flowers | sepals oblong, (2–)3 × 0.7(–1) mm, lateral pair not saccate basally; petals purple or pink, obovate, 6–9 × 3–4 mm, (not clawed); filaments: median pairs 3–3.5 mm, lateral pair 2–2.5 mm; anthers oblong, 0.7–1 mm. |
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. |
Fruiting pedicels | divaricate-ascending, (10–)15–30(–45) mm. |
ascending to divaricate, (10–)15–22(–30) mm. |
Fruits | linear, (torulose), 2–3 cm × 1–1.5 mm; ovules 14–20 per ovary; style 2–4 mm. |
linear, 2–3.5(–4) cm × 1.4–1.7 mm; ovules 14–24 per ovary; style 2–4(–5) mm. |
Seeds | brown, oblong to ovoid, 1.7–2.2 × 1–1.5 mm, (winged distally). |
dark orange to greenish yellow, oblong or globose, 1.7–2.1 × 1–1.4 mm. |
2n | = 16, 56, 64, 80, 96, 112. |
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Cardamine pattersonii |
Cardamine bulbosa |
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Phenology | Flowering May–Jun. | Flowering Mar–Jun. |
Habitat | Moist mossy cliffs, rocky slopes, mossy banks | 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 |
Elevation | 800-900 m (2600-3000 ft) | 0-900 m (0-3000 ft) |
Distribution |
OR
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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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Discussion | Of conservation concern. Cardamine pattersonii is known from Saddle Mountain and Onion Peak in Clastop County. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 7, p. 480. | FNA vol. 7, p. 469. |
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 | |
Name authority | L. F. Henderson: Rhodora 32: 25. (1930) | (Schreber ex Muhlenberg) Britton: Prelim. Cat., 4. (1888) |
Web links |