dististribution for each taxon is summarized by the numbers 1 through
10, representing the 10 vegetational areas
section titled "Texas Plants -- An Ecological Summary" includes
a discussion of the vegetation types, dominant plant species, soils,
and current land uses within the 10 vegetational areas of Texas which
is from Gould et al. ). The arrangement of families in the current
version of the searchable database and the 1990 version of the checklist
generally corresponds to the sequence given in Correll and Johnston
(1970), which is a modified Engler and Prantl (1887-1915) alignment.
Within a family, the genera, species, subspecies, and varieties are
names, shown in bold face in the original checklist, are listed as the
first line of each record in the database. Appropriate synonyms, shown
in italics in the original checklist, are provided as an indication
of "Other names in use" in the database.
may notice an alteration in the spelling of several specific epithets.
If the stem in a two-part specific epithet ends in a, e, o, or u, then
such a vowel is deleted and replaced by o for Greek stems and by i for
Latin stems. For example, iva : folia, written as ivifolia, as per Article
73G of the International Code of Botanical Nomenclature (1983), was
previously written as ivaefolia. Authorities are given for genera, species,
subspecies, and varieties (typical subspecies and varieties, called
autonyms, do not have authorities). To conserve space, we have cited
only the essential authorities instead of complete authorities; for
example, the authority for Muhlenbergia asperifolia is given as (Trin.)
Parodi, not as (Nees and Mey. ex Trin.) Parodi (allowed either way,
as per International Code of Botanical Nomenclature, Article 46E; Voss
et al. 1983).
names are followed by common names (if available) in the original checklist
and listed as "local name" in the database. The first or only
common name of a species is shown in all capital letters, and additional
common names appear in lower case letters. The initial letters of common
names of genera, if any, are capitalized. If the common name of a genus
is used for the species, the name is abbreviated to its first letter.
broad regional distribution is given for each species, subspecies, and
variety. The codes for origin, habit (longevity), phenology, and distribution,
given on the inside of the front cover of the checklist, are either
translated as phrases in the database or listed as 'yes' or 'no' indications
(a description of the 'translation' of the electronic files is.
corrections, and taxonomical changes (to Correll and Johnston 1970 and
to Gould 1975b), indicated with asterisks (see the inside of front cover)
in the checklist, are not specifically noted in the database, although
later versions will carry this information. References for these recent
revisionary works are given in the section titled "Bibliography."
The references are provided in two categories: general and family.