''Pterostegia'' is a monotypic plant genus containing only the single species ''Pterostegia drymarioides'', which is known as the woodland threadstem, woodland pterostegia, fairy mist, or fairy bowties.

Distribution

The plant is native to the

western United States The Western United States (also called the American West, the Far West, and the West) is the region comprising the westernmost states of the United States. As American settlement in the U.S. expanded westward, the meaning of the term ''the Wes ...

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 ...

Baja California Baja California (; 'Lower California'), officially the Free and Sovereign State of Baja California ( es, Estado Libre y Soberano de Baja California), is a state in Mexico. It is the northernmost and westernmost of the 32 federal entities of Mex ...

, and Northwestern Mexico. The plant is most commonly found carpeting the ground in shady areas, such as in the understory of a cool forest or

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 ...

woodlands. It sometimes grows hidden from view beneath other plants. It also is found in shaded areas of desert habitats.

Description

''Pterostegia drymarioides'' is a very small annual spreading or climbing plant with very thin, hairy stems. The tiny leaves are lobed or heart-shaped and may be green or pink. The plant may sprawl across the ground in a thin layer or may form small patches here and there. The plant bears tiny bright pink flowers.

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