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Asclepias purpurascens Linnaeus. Purple Milkweed. Phen: (Apr-) May-Jul (-Sep); Jul-Oct. Hab: Openings in moist bottomlands and swamp forests, prairies and meadows (rich, wet to mesic), woodlands, perhaps mostly on soils derived from mafic or calcareous rocks. Dist: NH and s. ON west to WI, IA, and KS, south to NC, nw. TN (Chester, Wofford, & Kral 1997), KY, AR, and OK.

Origin/Endemic status: Native

Synonymy : = Ar, C, F, FNA14, G, GrPl, Il, K1, K3, K4, Mi, Mo2, NE, NY, Ok, Pa, RAB, S, Tat, Tn, Tx, Va, W, Woodson (1954)

Links to other floras: = Asclepias purpurascens - FNA14

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Wetland Indicator Status:

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

Heliophily : 7

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image of plant© Bruce A. Sorrie | Original Image ⭷
image of plant© Scott Ward | Original Image ⭷
image of plant© Scott Ward | Original Image ⭷
image of plant© Alan M. Cressler | Original Image ⭷
image of plant© Grant Morrow Parkins | Original Image ⭷
image of plant© Scott Ward | Original Image ⭷
image of plant© Scott Ward | Original Image ⭷
image of plant© Gary P. Fleming | Original Image ⭷
image of plant© Gary P. Fleming | Original Image ⭷
image of plant© Grant Morrow Parkins | Original Image ⭷
image of plant© Grant Morrow Parkins | Original Image ⭷

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Horticultural Information

NCBG trait

Intro: Erect perennial of openings in moist bottomlands and swamp forests, prairies and woodlands; perhaps mostly on soils derived from mafic or calcareous rocks.

Stems: Stems solitary, light green, minutely hairy or with lines of hairs between leaf nodes; leaks milky sap when bruised.

Leaves: Leaves opposite (6+ pairs), petiolate, oval to elliptic or oval-oblong, 3-6 1/2 in. long, the sides often curling up from the pink central vein, smooth above, softly hairy (at least along veins) beneath.

Inforescence:

Flowers: Flowers in terminal cluster of 1-6 rounded umbels, each 2-3 in. wide; deep purple to deep rose (greenish in bud), about 3/4 in. long, consisting of 5 strongly reflexed corolla lobes and a lighter colored central crown--composed of 5 2-parted appendages ("hood" and "horn")--surrounding a complex structure of fused anthers and style.

Fruits: Fruit a furry, lance-shaped to oval follicle containing tufted seeds.

Comments:

Height: 1 1/4-3 ft.

plant sale text:

bloom table text:

description: Erect perennial of openings in moist bottomlands and swamp forests, prairies and woodlands; perhaps mostly on soils derived from mafic or calcareous rocks.

stems: Stems solitary, light green, minutely hairy or with lines of hairs between leaf nodes; leaks milky sap when bruised.

leaves: Leaves opposite (6+ pairs), petiolate, oval to elliptic or oval-oblong, 3-6 1/2 in. long, the sides often curling up from the pink central vein, smooth above, softly hairy (at least along veins) beneath.

inflorescence:

flowers: Flowers in terminal cluster of 1-6 rounded umbels, each 2-3 in. wide; deep purple to deep rose (greenish in bud), about 3/4 in. long, consisting of 5 strongly reflexed corolla lobes and a lighter colored central crown--composed of 5 2-parted appendages ("hood" and "horn")--surrounding a complex structure of fused anthers and style.

fruits: Fruit a furry, lance-shaped to oval follicle containing tufted seeds.

comments:

cultural notes:

germination code:

native range: eastern North America

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