Bradburia hirtella

Bradburia hirtella Torr. & A. Gray is native to Texas and Louisiana. It includes herbaceous annuals over most of the limited range and very rarely perennials known from the southern most population. The species is distinquished by it staminate disc florets (ovary sterile) and pistillate and fertile ray florets (Semple 2006 FNA). The pappus of the disc florets is very irregular (Semple 2006).

Chrysopsis texana G. L. Nesom is a synonym.

Bradburia hirtella, leaf morphology and anatomy, revised Fig 7-11, Semple & Chinnappa 1984

Semple & Chinnappa (1984) experimentally produced an F1 hybrid with 2n=7 from the common 2n=6 race and the rare 2n=8 race of B. hirtella.

Bradburia hirtella, habitat, Fayette Co., Texas

Bradburia hirtella,mid size plant, Fayette Co., Texas

Bradburia hirtella, large plant, Fayette Co., Texas

Bradburia hirtella, ray floret fruit and pappus

Bradburia hirtella, ray floret fruit and pappus, bristle bases

Bradburia hirtella, ray fruit and pappus, close-up

Bradburia hirtella disc floret pappus

Bradburia hirtella, leaf morphology and anatomy, revised Fig 7-11, Semple & Chinnappa 1984

Semple, J.C. and C.C. Chinnappa. 1984. Observations on the cytology, morphology and ecology of Bradburia hirtella (Compositae-Astereae). Syst. Bot. 9: 95-101.

SEMPLE, J.C. 2006. Quadruple, triple, double, and simple pappi in the goldenasters, subtribe Chrysopsidinae (Asteraceae: Astereae). Sida 22 (1): 503-531.

Last revised 30 October 2013 by J.C. Semple