December 2012 Number 1 - Utah Native Plant Society

Calochortiana December 2012 Number 1
RESULTS
Distribution maps (Figures 1, 2) show the localities
of specimens of Astragalus lentiginosus var. maricopae
and A. lentiginosus var. ursinus examined for this study.
Specific vouchers labeled in figures are shown in Table
1. A detailed list of the vouchers examined can be found
in the Taxonomic Treatment and in Appendix 1.
Of the 24 morphological characters examined for the
153 specimen Palantia PCoA, two were constant and
not used (Table 2), one was discarded due to character
state scoring issues, and 22 were variable. The first
component of the PCoA explained 22.1% of the total
variance (Table 3). The largest correlations to the first
axis were from pod raceme orientation (podro), degree
of pod incurve (podpi), pod pedicel orientation (podpo),
banner color (bannc), and pod persistence (poddp). The
second component of the PCoA explained 11.8% of the
total variance. The largest correlations to the second
axis were from pod pubescence (podpu), leaf abaxial
pubescence (leafab), pod shape in cross section (podsc),
and pod inflation (podin). All other components of the
PCoA explained less than 10% of the total variance. The
scatterplot of the first two components of the PCoA is
shown in Figure 3.
Of the 24 morphological characters examined for the
43 specimen Astragalus lentiginosus var. mokiacensis
PCoA, 12 were found to be variable in this subset of the
data (Table 4). The first component of the PCoA explained
48.4% of the total variation (Table 5). The largest
correlations to the first axis were from pod shape in
Figure 1. Distribution map of Astragalus lentiginosus
var. maricopae in Arizona. The distributions of Astragalus
lentiginosus var. bryantii and A. lentiginosus var.
wilsonii are shown for reference. Table one contains the
legend of letter codes used for specific vouchers shown.
Vouchers and major populations are labeled as follows:
(caret), A. lentiginosus var. bryantii; (upward triangle),
A. lentiginosus var. maricopae; (circle), A. lentiginosus
var. wilsonii; (X), Cameron population of A. lentiginosus
var. wilsonii putatively intermediate to A. lentiginosus
var. palans.
Figure 2. Distribution map of Astragalus
lentiginosus var. ursinus. The distribution
of A. lentiginosus var. mokiacensis
is shown for reference. Table 1 contains
the legend of letter codes used for
specific vouchers shown. Taxa are labeled
as follows: (X) A. lentiginosus var.
ursinus; (upward triangle) A. lentiginosus
var. mokiacensis, mokiacensis minor
variant; (diamond) A. lentiginosus var.
mokiacensis, Gold Butte minor variant;
(caret) A. lentiginosus var. mokiacensis,
trumbullensis minor variant. For a taxonomic
treatment for the morphological
variants shown herein for A. lentiginosus
var. mokiacensis, see Alexander
(2005, 2008).
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