Plants are rooted to the ground or free floating, and produce their own food via photosynthesis.
Leaf arrangement is alternate, opposite, whorled, or basal.
Leaves are simple or compound.
Compound leaves may be pinnately or palmately compound.
There is no taxonomic rank for trees.
A tree is always a woody perennial, and usually has a solitary trunk.
The difference between a large shrub and a small tree may be a matter of opinion,
especially if it forms thickets.
There is no taxonomic rank for vines.
Here are some of the more common perennial vines.
Vascular Plants -- Division Tracheophyta
— Class Magnoliopsida
Almost all of our native vascular plants produce flowers.
This includes plants with inconspicuous flowers such as grasses and other wind-pollinated plants.
— Genus Equisetum
— Psilotum nudum
— Genus Ephedra
Non-vascular Land Plants
— Division Bryophyta
Mosses, liverworts, and hornworts.
— Family Characeae
Many revisions are currently being discussed in the plant kingdom.
Texas Nature is migrating towards following the Integrated Taxonomic Information System
Evidence that species is found in Texas:
- Atlas of the Vascular Plants of Texas, Volume 2, B.L. Turner, Holly Nichols, Geoffrey Denny and Oded Doron, Botanical Research Institute of Texas (BRIT), Fort Worth, Texas, 2003.
- Shinners & Mahler's Illustrated Flora of North Central Texas, George M. Diggs, Jr., Barney L. Lipscomb, and Robert J. O'Kennon, Botanical Research Institute of Texas (BRIT), Fort Worth, Texas, 1999. An invaluable resource for identifying Texas plants. Excellent glossary.
- Image Archive of Central Texas Plants, website for UT Austin's native plants course.
- Integrated Taxonomic Information System, authoritative taxonomic information.
- Flora of North America, a collaboration of many U.S. and Canadian organizations presenting descriptions of North American plants.