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Cardamine douglassii Britton. Common name: Purple Cress, Limestone Bittercress, Douglass's Bittercress, Pink Spring-cress. Phenology: Late Feb-early Apr; Apr-May. Habitat: Nutrient-rich, mesic forests, especially alluvial bottomlands, and in nutrient-rich seepages. Distribution: NY, ON, and MN south to c. NC (in the drainages of the Neuse, Meherrin, and rarely Cape Fear rivers), sc. TN, AL, and MO. Reports for SC are based on misidentification of C. bulbosa.

Origin/Endemic status: Native

Synonymy ⓘ: = Ar, C, F, FNA7, G, GW2, Il, K4, Mi, NE, NY, Pa, RAB, Tat, Tn, Va, Al-Shehbaz (1988a), Rollins (1993). Basionym: Cardamine douglassii Britton 1889 "Urbasionym:" Arabis rhomboidea Pers. var. purpurea Torr. 1822

Links to other floras: = Cardamine douglassii - FNA7

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Wetland Indicator Status:

  • Atlantic and Gulf Coastal Plain: OBL
  • Eastern Mountains and Piedmont: FACW
  • Great Plains: FACW
  • Midwest: FACW
  • Northcentral & Northeast: FACW

Heliophily ⓘ: 3

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image of plant© Gary P. Fleming | Original Image ⭷
image of plant© Erik Danielson source | Original Image ⭷
image of plant© Erik Danielson source | Original Image ⭷
image of plant© Grant Morrow Parkins | Original Image ⭷
image of plant© Gary P. Fleming | Original Image ⭷
image of plant© Erik Danielson source | Original Image ⭷
image of plant© Bruce Sorrie | Original Image ⭷

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Horticultural Information

NCBG trait

Intro: Erect, somewhat colonial perennial of nutrient-rich, moist forests, especially alluvial bottomlands, and in nutrient-rich seepages (in NC, in the drainages of the Neuse, Meherrin, and [rarely] Cape Fear Rivers).

Stems: Stems unbranched, purple-tinged toward the base and hairy.

Leaves: Basal leaves petiolate, round (or nearly so), to about 1 in. long, purple beneath; stem leaves (2-5) alternate, sessile or clasping, oval, to 2 in. long (reduced upward) and bluntly toothed or scalloped.

Inforescence:

Flowers: Flowers on long stalks in a short terminal raceme, blooming from the bottom upward; pink to lavender (rarely white), 1/2-1 in. wide, consisting of 4 oblong-oval petals, 4 shorter and hairy purple sepals, several stamens and a single stout style.

Fruits: Fruit a thin, cylindrical pod.

Comments:

Height: 3-15 in.

plant sale text:

bloom table text:

description: Erect, somewhat colonial perennial of nutrient-rich, moist forests, especially alluvial bottomlands, and in nutrient-rich seepages (in NC, in the drainages of the Neuse, Meherrin, and [rarely] Cape Fear Rivers).

stems: Stems unbranched, purple-tinged toward the base and hairy.

leaves: Basal leaves petiolate, round (or nearly so), to about 1 in. long, purple beneath; stem leaves (2-5) alternate, sessile or clasping, oval, to 2 in. long (reduced upward) and bluntly toothed or scalloped.

inflorescence:

flowers: Flowers on long stalks in a short terminal raceme, blooming from the bottom upward; pink to lavender (rarely white), 1/2-1 in. wide, consisting of 4 oblong-oval petals, 4 shorter and hairy purple sepals, several stamens and a single stout style.

fruits: Fruit a thin, cylindrical pod.

comments:

cultural notes:

germination code:

native range: eastern North America



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