Introductory
SPECIES: Bouteloua barbata var. barbata | Sixweeks Grama 



ABBREVIATION : 
BOUBARB

SYNONYMS : 
   Bouteloua barbata


SCS PLANT CODE : 
   BOBA2


COMMON NAMES : 
   sixweeks grama
   six-weeks grama
   six weeks grama


TAXONOMY : 
Numerous floras list sixweeks grama as a distinct species, Bouteloua
barbata Lag. [3,10,14,15].  However, a taxonomic revision of the genus
Bouteloua by Gould [9] treats sixweeks grama as a variety of Bouteloua
barbata.  Under Gould's treatment, the previously distinct species
Bouteloua barbata Lag., B. rothrockii Vasey, and B. sonorae Griffiths
are considered to be three varieties of a single species.  Gould's
treatment is presented below:

  Bouteloua barbata Lag. Varied. Ci.

    var. barbata (sixweeks grama)

    var. sonorae (Griffiths) Gould, comb. Nov. (Sonoran grama)

    var. rothrockii (Vasey) Gould, comb. Nov. (Rothrock grama) 

This paper follows Gould's taxonomic treatment.  Discussion is limited
to sixweeks grama.  

It is interesting to note that sixweeks grama is a short-lived annual,
while the other two varieties are perennial.


LIFE FORM : 
Graminoid

FEDERAL LEGAL STATUS : 
No special status

OTHER STATUS : 
NO-ENTRY


COMPILED BY AND DATE : 
Ronald Uchytil/November 1990


LAST REVISED BY AND DATE : 
NO-ENTRY


AUTHORSHIP AND CITATION : 
Uchytil, Ronald J. 1990. Bouteloua barbata var. barbata. In: Remainder of Citation

Related categories for Species: Bouteloua barbata var. barbata | Sixweeks Grama