Browsing by Subject "Flora of Texas"
Now showing 1 - 2 of 2
- Results Per Page
- Sort Options
Item (Vol.10, 2007-12) A Field Study of Hybridization Between Berberis Swaseyi and B. Trifoliolata (Berberidaceae) in Hays County, Texas(2007-12) Harms, Robert T.The widespread Berberis trifoliolata is sympatric with the narrowly restricted B. swaseyi in central Texas, where apparent intermediates occur. A detailed field study of sympatric populations in northern Hays Co. during 2004 to 2007 clarifies the morphological and phenological differences between the two species and shows that intermediates almost surely arose from hybridization. Limited evidence of introgression is also discussed.Item (Vol.18, 2015-12) Taxonomic Utility of Lemma Micromorphological Characters in the Sporobolus Compositus and Sporobolus Vaginiflorus Complexes (Poaceae)(2015-12) Harms, Robert T.; Mendenhall, JohnFive lemma micromorphological characters including bicellular microhairs, hooks, long cells, prickles, and silica cells of six Sporobolus taxa representing the S. compositus and S. vaginiflorus complexes in Texas were investigated using scanning electron microscopy (SEM). Our study supplements earlier SEM treatments of Sporobolus in Valde´s-Reyna & Hatch and Liu et al. and colleagues. The micromorphological differences found by our study support the taxonomic treatment of these two complexes by Peterson et al.