Hydrophyllum brownei, or Browne's waterleaf, is a rare North American plant species found only in the Ouachita Mountains in Arkansas.Tropicos, Hydrophyllum brownei It grows in forested hillsides above the Cossatot River in Howard County, as well as in Polk and Garland Counties.Biota of North America Program 2014 county distribution map
Hydrophyllum brownei is an herb up to 50 cm (20 inches) tall, spreading by means of underground rhizomes. Leaves are pinnately compound, the leaflets very often pinnately lobed, with short bristly hairs. Flowers are lavender to almost white, 10–12 mm long.Kral, R. & V. Bates. 1991. A new species of Hydrophyllum from the Ouachita Mountains of Arkansas. Novon 1(2): 60–66. includes line drawings on pages 61 + 62
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