lanechaffin

加入於:2018 11 月 12 最近活躍:2024 4 月 24 iNaturalist

I am an amateur tree buff and advocate for preservation of natural areas. I have been observing and identifying trees in Central Texas for over 40 years.

https://www.inaturalist.org/comments?commit=Search&q=@lanechaffin

https://lanechaffin.neocities.org/about_invasives
https://lanechaffin.neocities.org/about_ash_trees

J. ashei: Hemispheric scale leaf glands and nearly always one seed per cone
J. ovata: Oblong\elliptical scale leaf glands and usually two seeds per cone
https://w3.biosci.utexas.edu/prc/DigFlora/JUAS/cedar.html
https://www.researchgate.net/figure/Distribution-of-J-ashei-var-ashei-and-var-ovata_fig3_228510256
https://www.researchgate.net/figure/Comparison-of-whip-leaf-glands-for-J-ashei-var-ashei-and-var-ovata_fig2_228510256

The main trait that is used to separate Coreopsis wrightii from Coreopsis basalis is the leaves;

In C. wrightii, the median and upper leaves have narrow segments, with the median leaves having terminal leaflets that are "more than three times as long as broad (ca. 1-3 mm wide). The lower stem also tends to be glabrous (smooth) to slightly pubescent (slightly hairy) on the internodes.

In C. basalis, the median and upper leaves have wide/broad segments, with the median leaves having terminal leaflets that are "mostly less than three times as long as broad (ca. 5-15 mm wide)". The lower stem also tends to be commonly pubescent to densely pubescent.

PHOTO OF C. BASALIS LEAF: https://inaturalist.ca/photos/281156173
PHOTO OF C. WRIGHTII LEAF: https://inaturalist.ca/photos/3812979 (zoom in)

They also occur in (mostly) different ranges:
C. wrightii: Central Texas to Southern Oklahoma
C. basalis: Texas*, Louisiana, Arkansas, Mississippi, Alabama, Georgia, Florida, South Carolina, North Carolina.
*In Texas, C. basalis usually occurs in the South, and in the East (near the border for Louisiana).
Monarda stanfieldii- Species restricted to granitic areas of the hill country along the Pedernales and Colorado rivers. Distinguished from M. punctata by the cone of dense white hairs over the opening of the calyx.
ref https://www.inaturalist.org/observations/164558801

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