Distribution of Helianthus samples in Texas herbaria

This page is an example of a mapping system for tracking coverage of Texas counties by in-state herbarium collections. The selectable items below display a map of the state with counties highlighted to indicate that an herbarium within the state has a sample of that Helianthus species in its collection. At present, the collections of the following herbaria are in the database: If multiple herbaria have specimens for a given species in a given county, the above list represents the order of precedence, i.e., UT's color will always be shown if their collection covers a county, then TAMU-Tracy's if UT is not present, then BRIT, etc.

Naming is according to Hatch et. al.'s A Checklist of the Vascular Plants of Texas (1990). The map of the state was taken from the Texas Department of Transportation.

A clickable diversity map for genus Helianthus is also available.


Mapping system created by Erich Schneider at the Center for the Study of Digital Libraries (Texas A&M) for the Flora of Texas Consortium.