Coreopsis bakeri (Asteraceae; Coreopsideae), a new species from Florida, USA

Abstract

Coreopsis bakeri (Asteraceae; Coreopsideae), an early blooming and very narrow-leaved perennial restricted to rare limestone glade habitats in northern Florida, is described as new. The plants most closely resemble Coreopsis lanceolata, a common species of the southeastern U.S., but have narrower, glabrous, and infolded leaves. In addition to phenotypic differences, the two species show divergence at two nuclear genes, the nuclear ITS and ETS regions, and for two chloroplast intergenic spacers (psbA-trnH and rpl32-trnL). Because of the rarity of C. bakeri and the very limited extent of its distinctive habitat, this species is in urgent need of protection. In addition, C. lanceolata is found in open areas near the limestone glades, and poses a potential threat through competition or hybridization.

A New Species in Trillium subgen. Delostylium (Melanthiaceae, Parideae)

“…Careful analyses of both morphology and habitat, now often combined with new data available from molecular approaches, have resulted in recent recognition of several novelties from this area (Estes and Beck 2011;Weakley et al 2011;Weakley and Poindexter 2012;Sorrie et al 2013;Campbell and Seymour 2013;Boufford et al 2014;Turner 2015;Schilling et al 2015). In particular, several new species of Trillium, which has the majority of its species in the region, have been discovered (Gaddy 2008;Schilling et al 2013;Schilling et al unpublished).…”