Subspecies
Rosa pisocarpa pisocarpa (Pea rose)
Rosa pisocarpa pisocarpa. Photo: (c) Steve Matson, some rights reserved (CC BY-NC)
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…
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