Bartonia texana

Texas Screwstem

FWS Focus


Texas screwstem is a slender, erect annual plant that measures 6 to 14 inches tall. Leaves are reduced to scales and alternate, but can be positioned opposite of each other at the top of the stem. Flowers are four-lobed and arranged in clusters. The sepals are slender, awl-shaped lobes that are fused at the base. The petals are whitish, egg-shaped tapering gradually to a point or ending in a small abrupt point. The fruit is a capsule that splits at its apex to release seeds.

Scientific Name

Bartonia texana
Common Name
Texas screwstem
FWS Category
Flowering Plants

Location in Taxonomic Tree

Identification Numbers



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