Ptilimnium capillaceum (Michaux) Rafinesque. Common name: Eastern Bishopweed, Atlantic Bishopweed. Phenology: Jun-Aug; Jul-Sep. Habitat: Ditches, marsh, other wet places. Distribution: MA, NY, and MO south to s. FL and TX.
Origin/Endemic status: Native
Synonymy ⓘ: = Ar, C, F, Fl7, FNA13, G, GrPl, GW2, K4, MC, Mo2, NcTx, NE, NY, Ok, Pa, S, S13, Tat, Tn, Tx, Va, W, WH3, Easterly (1957), Weakley & Nesom (2004); < Ptilimnium capillaceum (Michx.) Raf. — RAB, Feist (2010); Ammi capillaceum Michaux. Basionym: Ammi capillaceum Michx. 1803
Links to other floras: = Ptilimnium capillaceum - FNA13
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Wetland Indicator Status:
- Atlantic and Gulf Coastal Plain: OBL (taxonomic split from wetland indicator species)
- Eastern Mountains and Piedmont: OBL
- Great Plains: FACW (taxonomic split from wetland indicator species)
- Midwest: OBL (taxonomic split from wetland indicator species)
- Northcentral & Northeast: OBL (taxonomic split from wetland indicator species)
Heliophily ⓘ: 8
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© Bruce A. Sorrie | Original Image ⭷
© Alan M. Cressler | Original Image ⭷
© Alan M. Cressler | Original Image ⭷
© Scott Ward | Original Image ⭷
© Keith Bradley | Original Image ⭷Feedback
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Horticultural Information
Intro: Slender, erect annual of ditches, marshes and other wet places.
Stems: Stems loosely branched, at least above, smooth.
Leaves: Leaves alternate, on short petioles with sheathing base, to 4 in. long, divided into 3 leaflets that are further divided into many smooth, threadlike segments.
Inforescence:
Flowers: Flowers in flat-topped, compound umbels (to 2 in. wide) at tips of branches, each umbellet with 4--20 flowers, and the umbel surrounded by a whorl of bracts that resemble small versions of the leaves. . Flowers white, tiny, consisting of 5 incurved petals and stamens with pinkish-purple anthers.
Fruits: Fruit a joined pair of oval, ridged seeds.
Comments:
Height: 6-60 in.
plant sale text:
bloom table text:
description: Slender, erect annual of ditches, marshes and other wet places.
stems: Stems loosely branched, at least above, smooth.
leaves: Leaves alternate, on short petioles with sheathing base, to 4 in. long, divided into 3 leaflets that are further divided into many smooth, threadlike segments.
inflorescence:
flowers: Flowers in flat-topped, compound umbels (to 2 in. wide) at tips of branches, each umbellet with 4--20 flowers, and the umbel surrounded by a whorl of bracts that resemble small versions of the leaves. . Flowers white, tiny, consisting of 5 incurved petals and stamens with pinkish-purple anthers.
fruits: Fruit a joined pair of oval, ridged seeds.
comments:
cultural notes:
germination code:
native range:
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