Welcome to Txflora
Txflora.org is a dynamic plant search and identification guide for the flora of
Texas. Txflora, now in its third phase, began in 2006, with the intention of becoming
a web based resource to assist with the identification of vascular plants found
within the borders of Texas and includes both native and non-native species. Txflora
is under continual development and changes occur frequently – primarily in the number
of species currently associated with images in the database as well as the data
associated with species. Currently, over 1900 species have image associations (roughly
6000 images) with over 3 million data records in the database.
Texas is a vast state and very diverse in its flora. To someone new to the field
of Botany, this is very overwhelming and frustration is often the first result when
trying to identify a plant to the species level. This website and database aims
to assist with the identification by narrowing the search using geography (county
level or ecoregion) and a few characteristics such as growth habit, flowering or
non-flowering and category (e.g. monocot, dicot). Other characteristics can be used
when searching, but these characteristics are not complete for every species and
unless there is an image associated with the species the search may yield a negative
How to use Txflora.org
As mentioned previously, the database is dynamic and through associations in the
data one can narrow their search through a series of steps, much like a dichotomous
key. Once you use the database a few times it becomes very intuitive. If you allow
the system to set idle for too long, it will need to be reset. You can do this by
simply beginning a new search. Below are a few suggestions to help you in the beginning.
Search by geography:
Geographical Regions and Associated Data
From the search page you can select your county or ecoregion. Usually it is best
to begin with county, but remember, county data is not complete (some counties have
less than 100 species recorded while others, such as Brewster County, which has
been studied very well, has over 1700 records). After selecting geography, you can
then narrow your search by selecting different characteristics. The following characteristics
are complete for each species: Flowering/Non-flowering, Category, Duration, Growth
Habit and Nativity. These five characteristics should narrow your search to a more
Search by Family/Genus:
If you wish to view a family, you can simply select the family from the dropdown
menu. Once family is selected, you can then select a genus from the dropdown menu.
One can also use the characteristics after selecting a family. This is especially
helpful when searching a family that has a large number of genera. For example,
if you are searching for a member of the Asteraceae in the Chihuahuan Desert region
(which yields 350 + results), one may then select the duration (annual/perennial)
to further narrow the results.
Select geography (eco-region or county), then select Family. You can maneuver from
family to family within geography, but you cannot select a family and switch to
a different geographical area – if you do this, the system will reset back to the
default position (main search page).
While there are many maps describing the eco-regions of Texas, and many of these
are quite similar, Txflora uses the ecoregion map developed by the Nature Conservancy.
You can view and download this map by clicking here.
The bulk of the county data
comes from USDA’s plant database. Additional county data has been collected through
direct observations (i.e. photography), voucher specimens and through data research
on the web. If you would like more information on county data, please contact Txflora
using the link supplied below.
Nomenclature is based on the Kartez system and synonyms are included on the species
page. While there have been changes in nomenclature as well as new species added
to the flora of Texas, Txflora tries to be as current as possible. For the most
current nomenclature, please visit the USDA’s Plants Database
You do not need to register to use Txflora. However, if you wish to participate
in Txflora by uploading images of your own, you will need to register. There is
no limit (few to many) on the number of images you can upload. From the beginning,
Txflora was designed to be a community based effort by allowing users of the site
to upload their own images into the database and/or edit data currently in the database.
Once you have registered, and would like to submit images et cetera, please contact
Txflora through the “contact us” button at the bottom of this page. An image resize
program is available if needed. Additional instructions will be given to those who
wish to upload images. If you have any suggestions and/or comments, please select
the “contact us” button below.
All images on Txflora.org are copyrighted. Any use of these images requires consent
of photographer (submitter). Please contact Txflora via email (select the contact
us button at the bottom of the page) if you wish to use any of the images (commercial
or non-commercial use). Txflora will then forward your email to the appropriate