Cephalanthus occidentalis  L. - Buttonbush


 

|  back  | forward |

Cephalanthus occidentalis - (image 1 of 7)

 

Taxonomy

Family: Rubiaceae

Habitat

Grows in a variety of wet habitats, including marsh, bog, wooded floodplains. Where it is very common the habitat is sometimes referred to as buttonbush swamp.

Associates

Varies depending on habitat.

Distribution

Nova Scotia, New Brunswick and Quebec west to MN, south to Mexico and the West Indies.

Morphology

A medium to large deciduous shrub to 3 m, occasionally developing into a small tree. Terminal bud frequently absent. Leaves opposite, occasionally whorled, simple, lanceolate, entire, upper surface shiny green. Flowers in dense, round clusters; corolla white, funnelform, with 4 short lobes. Seeds 4-sided (like elongated corn kernel) tightly packed in a round cluster.

Notes

Flowers late June into late August.

Wetland indicator: Obligate.

An attractive shrub of wet soils. Makes a good specimen for a moist spot in the landscape. Pruning helps maintain a good shape. Most happy growing at the edge of the water but will tolerate drier soils to some extent.

References

Dirr, Michael A. 1998. Manual of Woody Landscape Plants: Their Identification, Ornamental Characteristics, Culture, Propagation and Uses.
5th ed. Champaign, Illiois: Stipes Publishing L.L.C.

 

Swink, F. and G. Wilhelm. 1994. Plants of the Chicago Region.
Indiana Academy of Science. The Morton Arboretum. Lisle, Illinois.

 


Home

 

 Michael Hough 2004