Phylogeny of Camassia (Agavaceae) Inferred from Plastid rpl16 Intron and trnD–trnY–trnE–trnT Intergenic Spacer DNA Sequences: Implications for Species Delimitation

A Chloroplast Phylogeny of Agavaceae subfamily Chlorogaloideae: Implications for the Tempo of Evolution on Serpentine Soils

“…Similarly, Schoenolirion croceum was found to be non-monophyletic, with one accession, S. croceum TN, moderately supported in a clade with S. wrightii and S. albiflorum (80, 94, 1), whereas the remaining accessions of S. croceum were weakly supported as a clade (63, 78, 0.79). We found Camassia quamash to be paraphyletic with one accession, C. quamash CA, placed as sister to C. angusta and C. scilloides (84, 86, 1), and the other as sister to C. cusickii (98, 84, 0.99), consistent with previous work (Fishbein et al 2010).…”

“…2). It is noteworthy that a chloroplast phylogeny of Camassia suggested that C. angusta and C. scilloides were derived from the western species, C. quamash (Fishbein et al 2010), as found also here, which precludes a phylogeographic connection to Schoenolirion. Hesperoyucca is allopatric to Schoenolirion in southern California, western Arizona, and Baja California (Clary 2002), and Hesperaloe occurs in closer proximity, in western and central Texas and northern Mexico (Robbins 2002), but also allopatric to Schoenolirion (Fig.…”

“…Although Hastingsia (Halpin and Fishbein, unpubl. data) and Camassia (Fishbein et al 2010) have been shown to be monophyletic in other analyses, our study has more rigorously demonstrated their monophyly with more extensive outgroup sampling. The monophyly of Schoenolirion has never been tested previously and is demonstrated here for the first time.…”

“…Of the remaining genera of Chlorogaloideae, Hastingsia has been sampled in only one phylogenetic study, which was focused on relationships within Camassia (Fishbein et al 2010), and Schoenolirion has not been sampled as yet. Based on recent phylogenetic and taxonomic work, these genera have been placed in Agavaceae (Bogler and Simpson 1996;Bogler et al 2006;Smith et al 2008;Fishbein et al 2010), or alternatively within subfamily Agavoideae in a broad Asparagaceae (APG 2009;Chase et al 2009). For clarity and simplicity, we maintain recognition of Agavaceae in this paper.…”

Phylogeography of Camassia quamash in western North America: postglacial colonization and transport by indigenous peoples

“…In the broader survey, we assessed evidence for camas bulbs having been transported over the Cascades. Specifically, a previous phylogenetic analysis of Camassia identified two distinct lineages largely from east or west of the Cascades (Fishbein et al. in press), allowing us to examine whether unusual haplotypes within the Pacific Northwest originated east of the Cascades.…”