Dallas Chapter

Welcome to the Dallas Chapter

NPSOT Dallas Chapter Meeting: February 16, 2026 at 7pm (Social time starts at 6:30pm)

The Lichen Flora of North Central Texas

Lichen-forming fungi (lichens) are a group of organisms that depend on a symbiotic relationship with a photosynthetic partner. These organisms are present on every continent and are diverse in most terrestrial ecosystems. Texas is represented by distinct ecoregions, and the state has not yet been thoroughly surveyed for lichens. This presentation will share some insight into lichen diversity in north central Texas based on recent and historical collections.

Taylor Quedensley grew up in the San Francisco Bay Area and attended college at the University of Nebraska at Lincoln, where he studied horticulture. After college, he worked at the San Francisco Botanical Garden and became involved with growing New World cloud forest species. He attended the University of Nebraska-Omaha, and subsequently, the University of Texas at Austin, where he researched sunflower species in Mexican and Guatemalan cloud forests.
Currently, Taylor is the manager at Cox Farms Nursery in Duncanville and holds a research appointment through the University of Texas herbarium in Austin.

 

Location: Gaston Christian Center’s Fellowship Hall – 8515 Greenville Avenue, Dallas, TX 75243 Google map link: https://goo.gl/maps/f56RmuSnjn9Z6RQQ6

ZOOM INFO: If you can’t join in person, log on using this link:
https://us02web.zoom.us/j/83725236133?pwd=MnRoZlRWMEd4ZENkaXdjalpkRFFIdz09
If needed, use:
Meeting ID: 837 2523 6133
Passcode: 882399a*

Stay in touch with the Dallas Chapter – sign up for our Newsletter, check out our Facebook page for more details and information.  Additionally, lots of great information can be found in our Newsletter Archives.

Map of Texas with Blackland Prairie shown

The Blackland Prairie

The Dallas Chapter of NPSOT includes all of Dallas County and the twenty-two cities within its boundaries. 

We are in the Blackland Prairie Ecoregion:  Average rainfall 28-40 inches with peak rainfall usually in May, Hardiness Zone 8A, average annual minimum temps 15-10 degrees.

Wildflower Planting dates for our area are:
Spring – January 15th thru March 1st
Fall – October 1st thru December 1st

Check this link for a PDF of the USDA’s Hardiness Zone Map for Texas: https://ftp.dot.state.tx.us/pub/txdot-info/library/pubs/cit/hardiness_district.pdf.

Our area is predominately an urban landscape, and the Dallas Chapter’s primary goal is to educate homeowners, businesses, and municipalities on the benefit of planting native landscapes. Each meeting, newsletter, field trip and activity will strive to achieve this goal.

Plant Propagation Guide – A basic guide to sharing your native plants with others through plant propagation. (PDF, 1.33 MB)
Inviting Nature Back Home – A complete guide to updating your landscape for Birds, Bees and Butterflies. (PDF, 2 MB)
see more planting info on our Plant Info page

Calendar - North Texas Chapters

Dallas, North Central, Collin County,
Trinity Forks and Cross Timbers

Also see NPSOT’s full calendar


 

About the Region

Fall Symposium 2025 Logo - Teach for the Future

Salado, the location of our Fall 2025 Symposium, lies at the intersection of two ecoregions: the Edwards Plateau (Limestone Cut Plain) and Blackland Prairie (Northern Blackland Prairie).

The Edwards Plateau area is also called the Hill Country; however, this general term covers a much larger area extending farther north. Spring-fed creeks are found throughout the region; deep limestone canyons, rivers, and lakes (reservoirs) are common. Ashe juniper is perhaps the most common woody species found throughout the region. Additional woody species include various species of oak, with live oak (Quercus fusiformis) being the most common. Sycamores (Platanus occidentalis) and bald cypress (Taxodium distichum) border waterways. This area is well known for its spring wildflower displays, though they may be viewed in spring, late summer, and fall, as well. According to Texas Parks and Wildlife, average annual rainfall in the Edwards Plateau ranges from 15 to 34 inches.

The Blackland Prairie extends from the Red River south to San Antonio, bordered on the west by the Edwards Plateau and the Cross Timbers, and on the east by the Post Oak Savannah. Annual rainfall averages 30 to 40 inches, with higher averages to the east. This region is dominated by prairie species. The most common grass species include little bluestem (Schizachyrium scoparium) and Indian grass (Sorghastrum nutans) in the uplands and switchgrass (Panicum virgatum) in the riparian areas and drainages. Common herbaceous flowering plants include salvias, penstemons, and silphiums. This area has suffered greatly from overgrazing and agricultural use. Few intact areas remain, though many of the plants can be found along county roadsides throughout the region.

Our fall Symposium host chapter, the Tonkawa Chapter, includes both of these ecoregions.

Source: Wildflowers of Texas by Michael Eason