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Rosa pisocarpa
Also called Pea Rose, Clustered Wild Rose, Pea Fruit Rose, Cluster Rose / Swamp Rose
Rosa pisocarpa is a species of rose known by the common name cluster rose or swamp rose. It is native to western North America from British Columbia to northern California, where it generally grows in moist habitats. It is a shrub sometimes forming a thicket, and growing up to 2.5 meters tall. The stems can be dark red or blackish and are often studded with straight, paired prickles at nodes. The leaves are each made up of several toothed oval leaflets, the terminal leaflet up to 4 centimeters long. The inflorescence is a cyme of up to 10 flowers with pink petals each up to 2 centimeters in length. The fruit is a rose hip about a centimeter wide. The hips are pear- or egg-shaped and borne in clusters, and are decorative in fall and early winter, when they are red or reddish-purple and contrast with yellow foliage. Fall foliage can be yellow or dark red.
Rosa pisocarpa has a wetland indicator status of FAC for the Pacific Northwest (region 9) and FACU for California (region 0). It grows in full sun in the northern and wetter portions of its range, but also tolerates partial shade, and can grow in dry or lean soils.
Chabertia elegans · Needle Rose · Rosa abrica · Abutalybov's Brier · Abyssinian Rose · Dog Rose · Prickly rose · Rosa adenophylla · Fieldbriar · Rosa alabukensis · White rose of York · Rosa alberti
Text excerpted from the Wikipedia article Rosa pisocarpa by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
