@article {Halpin:2013-12-01T00:00:00:0363-6445:996, author =
"Halpin, Kate M. and Fishbein, Mark", title = "A Chloroplast
Phylogeny of Agavaceae subfamily Chlorogaloideae: Implications
for the Tempo of Evolution on Serpentine Soils", journal =
"Systematic Botany", volume = "38", number = "4", year =
"2013-12-01T00:00:00", abstract = " Abstract—  Agavaceae
subfamily Chlorogaloideae is composed of the North American
genera Camassia, Chlorogalum, Hastingsia, and Schoenolirion,
with many species occupying serpentine soils or other poor soils
with unusual chemistries. The monophyly and intergeneric
relationships of this group have not been rigorously assessed.
We estimated the phylogeny of Chlorogaloideae using four
chloroplast DNA regions: rpl16 intron and trnD‐trnY‐trnE‐trnT,
psbJ‐petA, and trnS‐trnfM spacers, with the goals of evaluating
1) the monophyly of Chlorogaloideae, 2) the monophyly of each
genus and generic interrelationships, 3) the placement of
Chlorogaloideae in Agavaceae, and 4) the history of adap