''Hydrophyllum occidentale'' is a species of

flowering plant Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (), commonly called angiosperms. The term "angiosperm" is derived from the Greek words ('container, vessel') and ('seed'), and refers to those plants th ...

in the waterleaf family known by the common name western waterleaf.

Distribution

It is native to the western United States from

California California is a U.S. state, state in the Western United States, located along the West Coast of the United States, Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the List of states and territori ...

Idaho Idaho ( ) is a state in the Pacific Northwest region of the Western United States. To the north, it shares a small portion of the Canada–United States border with the province of British Columbia. It borders the states of Montana and Wyom ...

, where it grows in a variety of habitats from wet mountain meadows to dry

chaparral Chaparral ( ) is a shrubland plant community and geographical feature found primarily in the U.S. state of California, in southern Oregon, and in the northern portion of the Baja California Peninsula in Mexico. It is shaped by a Mediterranean c ...

slopes.

Description

This is a rhizomatous perennial herb producing a patch of leaves, most of which are made up of many pairs of oval-shaped, bluntly lobed green leaflets. These compound leaves may be up to 40 centimeters long. The plant produces erect stems branching into green to reddish-purple rough-haired, leafless peduncles bearing

inflorescence An inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches. Morphologically, it is the modified part of the shoot of seed plants where flowers are formed o ...

s. The inflorescence is a large ball of densely packed flowers. Each flower is up to a centimeter wide and bright white to lavender. It is coated in downy white hairs and has a long protruding style and usually five

stamen The stamen (plural ''stamina'' or ''stamens'') is the pollen-producing reproductive organ of a flower. Collectively the stamens form the androecium., p. 10 Morphology and terminology A stamen typically consists of a stalk called the filame ...

s with large purple or red anthers. The fruit is a spherical capsule containing two seeds. The inflorescence of ''Hydrophyllum occidentale'' occurs above the leaf canopy.

External links

Jepson Manual TreatmentPhoto gallery
occidentale Flora of the Sierra Nevada (United States) Flora of California Flora of the West Coast of the United States Flora of the Northwestern United States Flora of the Western United States Flora without expected TNC conservation status {{Asterid-stub