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long's bitter-cress

cut-leaf toothwort

Habit Perennials; glabrous throughout. Perennials; usually sparsely pubescent, sometimes glabrous.
Rhizomes

cylindrical, slender, 0.8–1.5 mm diam.

(tuberiform, fragile), moniliform, segments fusiform, 2–10(–20) mm diam. (fleshy).

Stems

prostrate to decumbent or erect, unbranched or branched, 0.5–4(–6) dm.

erect, unbranched, (1–)2–4(–5.5) dm, glabrous or pubescent distally.

Rhizomal leaves

absent.

3-foliolate, (7–)10–20(–30) cm, leaflets sessile;

petiole (4–)7–18(–25) cm;

lateral leaflets similar to terminal, blade sometimes smaller;

terminal leaflet blade oblong, lanceolate, oblanceolate, or linear, 2.5–6 cm, base cuneate, margins coarsely dentate to incised, laciniate, or 3-lobed (lobes usually toothed to incised, rarely entire, surfaces puberulent or not, trichomes 0.2–0.3 mm).

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).

(2 or) 3, 3-foliolate (usually whorled or opposite, rarely alternate, similar in morphology to rhizomal leaves), petiolate, leaflets petiolulate or subsessile;

petiole (1–)1.5–6(–7.5) cm, base not auriculate;

lateral leaflets sessile, blade similar to terminal, sometimes smaller;

terminal leaflet subsessile or petiolulate (to 3 cm), blade lanceolate, linear, or oblanceolate, (3–)4–10(–12) cm × (3–)5–20(–25) mm, margins usually coarsely dentate to incised, rarely subentire (margins minutely puberulent).

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, (4–)5–8 × 2–4 mm, lateral pair slightly saccate basally;

petals white to pale pink, oblanceolate, (8–)10–20 × (3–)4–7(–9) mm, (short-clawed, apex rounded);

filaments: median pairs 8–12 mm, lateral pair 6–8 mm;

anthers oblong-linear, 1.5–2.5 mm.

Fruiting pedicels

divaricate-ascending to spreading, 0.5–2(–4) mm.

ascending to divaricate, (6–)10–27(–33) mm.

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-lanceolate, (2–)2.5–3.8(–4.8) cm × 1.5–3 mm; (valves glabrous or sparsely pubescent);

ovules 10–14 per ovary;

style (2–)5–9(–12) mm.

Seeds

light or yellowish brown, oblong or ovoid, 1–1.4 × 0.7–1 mm.

brown, oblong, 1.6–3 × 1.8–2 mm.

2n

= 128–256.

Cardamine longii

Cardamine concatenata

Phenology Flowering Jun–Sep. Flowering Feb–May.
Habitat Tidal marshes, mud flats, tidal shores of rivers, shallow water, swampy areas, shady rocky crevices covered at high tide Wooded bottoms and bluffs, rich woods, limestone cliffs and outcrops, rocky banks, mesic forests, moist areas with leaf litter, floodplain woods
Elevation 0-10 m (0-0 ft) 0-1000 m (0-3300 ft)
Distribution
from FNA
FL; MA; MD; ME; NC; NJ; NY; SC; VA
[BONAP county map]
from FNA
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; TN; TX; VA; VT; WI; WV; ON; QC
[WildflowerSearch map]
[BONAP county map]
Source FNA vol. 7, p. 476. FNA vol. 7, p. 470.
Parent taxa Brassicaceae > tribe Cardamineae > Cardamine Brassicaceae > tribe Cardamineae > Cardamine
Sibling taxa
C. angulata, C. angustata, C. bellidifolia, C. blaisdellii, C. breweri, C. bulbosa, C. californica, C. clematitis, C. concatenata, C. constancei, C. cordifolia, C. digitata, C. diphylla, C. dissecta, C. douglassii, C. flagellifera, C. flexuosa, C. hirsuta, C. holmgrenii, C. impatiens, C. macrocarpa, C. maxima, C. micranthera, C. microphylla, C. nuttallii, C. nymanii, C. occidentalis, C. oligosperma, C. pachystigma, C. parviflora, C. pattersonii, C. penduliflora, C. pensylvanica, C. pratensis, C. purpurea, C. rotundifolia, C. rupicola, C. umbellata
C. angulata, C. angustata, C. bellidifolia, C. blaisdellii, C. breweri, C. bulbosa, C. californica, C. clematitis, C. constancei, C. cordifolia, C. digitata, C. diphylla, C. dissecta, C. douglassii, C. flagellifera, C. flexuosa, C. hirsuta, C. holmgrenii, C. impatiens, C. longii, C. macrocarpa, C. maxima, C. micranthera, C. microphylla, C. nuttallii, C. nymanii, C. occidentalis, C. oligosperma, C. pachystigma, C. parviflora, C. pattersonii, C. penduliflora, C. pensylvanica, C. pratensis, C. purpurea, C. rotundifolia, C. rupicola, C. umbellata
Synonyms Dentaria concatenata, C. laciniata var. integra, C. laciniata var. lasiocarpa, Dentaria laciniata, Dentaria laciniata var. alterna, Dentaria laciniata var. coalescens, Dentaria laciniata var. integra, Dentaria laciniata var. latifolia, Dentaria laciniata var. opposita
Name authority Fernald: Rhodora 19: 91. (1917) (Michaux) O. Schwarz: Repert. Spec. Nov. Regni Veg. 46: 188. (1939)
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