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Williamson County, Brush Creek Trail
4/20/2018
Chamaesaracha edwardsiana

Occurring in patches and sporadically along this section of the trail. These fit the classic description of C. edwardsiana, including the pedicels having short mostly glandular hairs mixed with simple hairs, the stems being sparsely pubescent with branched hairs, and the leaves being mostly glabrous.

Kimble County, Texas; CR370
4/24/2021
Chamaesaracha edwardsiana

One small clump adjacent a utility pole on the side of the road.

Chamaesaracha is a difficult genus taxonomically due to the variability in pubescence within species. This particular specimen had glandular, branched, and simple hairs on the pedicels; dense branched hairs on the stems, and sparse to moderate branched hairs on the leaves, mainly on the veins. This specimen could possibly identified as C. edwardsiana (glandular hairs on pedicel) or possibly C. pallida (branched hairs on the leaves), but glandular hairs on the pedicels are supposed to be rare on C. pallida, so I am opting for C. edwardsiana.

Pics as follows:
1) Flower
2) Pedicel with glandular, simple and branched hairs
3) Closeup of pedicel
4) Leaf
5) Abaxial side of leaf with moderate branched hairs
6) Stem with dense branched hairs
7) Plant
8) Plant

Mills county, Texas; Timberlake Biological Field Station Bio Blitz
5/17/2019
Chamaesarach coniodes

Somewhat common on dirt road and disturbed areas adjacent to it with lower vegetation.

I had been excited to see some Chamaesaracha besides C. edwardsiana for a change and as luck would have it the first place I stopped at the Bioblitz I pretty much drove right over a patch of it.

Plants were typically small, with irregular pinnately lobed leaves ranging from 6-10mm wide, though some others in the population appeared somewhat wider and much less deeply lobed. Hairs on this plant were primarily short and glandular, with occassional simple ones about 2-4 times as long as the glandular ones. A cursory look at a couple of other plants did show that some plants also had branched hairs but I did not examine them closely on this day.

Picture order is: whole plant, flower, leaf, stem hairs, leaf hairs, and pedicel hairs.