Molecular data support Anomochlooideae and Pharoideae as the two most basal extant clades within Poaceae. Anomochlooideae are endemic to the New World and have two tribes and two genera including the widespread Streptochaeteae (3–4 spp.) and the critically endangered Anomochloeae (1 sp.) of coastal Bahia, Brazil. Pharoideae are pantropical with one tribe, three genera, and 14 species; all eight...

Bamboos are typical examples of highly synchronized semelparous species. Their mass-flowering events occur at supra-annual intervals but they sometimes flower on a small scale in off-years. If some bamboo ramets (culms) of a genet flower and die in off-years, whereas other culms of the same genet do not flower synchronously, the genet can still survive blooming in an off-year and could particip...

GAGNON, P. R. AND W. J. PLATT (Louisiana State University, Department of Biological Sciences, 202 Life Sciences Building, Baton Rouge LA 70803). Reproductive and seedling ecology of a semelparous native bamboo (Arundinaria gigantea, Poaceae). J. Torrey Bot. Soc. 135: 309–316. 2008.—Canebrakes were monodominant stands of bamboo once common in bottomlands throughout the southeastern U.S. They wer...

We hypothesized that the ongoing naturalization of frost/shade tolerant Asian bamboos in North America could cause environmental consequences involving introduced bamboos, native rodents and ultimately humans. More specifically, we asked whether the eventual masting by an abundant leptomorphic ("running") bamboo within Pacific Northwest coniferous forests could produce a temporary surfeit of fo...

In response to contamination from the recent Fukushima nuclear accident, we conducted radionuclide analysis on bamboos sampled from six sites within a 25 to 980 km radius of the Fukushima Daiichi nuclear power plant. Maximum activity concentrations of radiocesium (134)Cs and (137)Cs in samples from Fukushima city, 65 km away from the Fukushima Daiichi plant, were in excess of 71 and 79 kBq/kg, ...

The subfamily Bambusoideae comprises three monophyletic tribes, Arundinarieae, Bambuseae and Olyreae. Here we report the gametic number chromosomal meiotic behavior of two species belonging to herbaceous tribe Olyreae, Olyra latifolia humilis. Accessions were collected in Misiones, at Northeastern Argentina. We a new for O. humilis, n=18, confirmed n=11 latifolia. Chromosomal features, like bas...