C. chamaedrys var. A. Gray, Pl. Wright. 2: 52. 1853. — "... between the copper mines, New Mexico and the Chiricahui Mountains; July ([C. Wright] 1043). Between the Leona and Rio Frio, Western Texas; July ([C. Wright] 1367)!' — The three sheets (NY) mentioned by Isely (1972: 276) correspond to this entity, which Gray provisionally distinguished from C. chamaedrys Engelmann before Bentham had recognized the latter as a taxonomic synonym of C. eriophylla. The three plants are suspiciously alike in age, discoloration, and details of pubescence, as well as in the long pod, such as is unknown in southwestern New Mexico. Probably all are parts of one gathering made by Wright in the first week of July 1849, between the present Uvalde and Brackettville in Uvalde or Kinney County, Texas.

C. eriophylla var. chamaedrys sensu Isely, 1973: 79.

In habit, foliage, and flowers exactly duplicating the more amply foliate states of var. eriophylla found in the Sonoran Desert, but notable for the relatively long pod (8-10 cm) and remotely allopatric dispersal.

On caliche soils of dry hillsides below 450 m, very local, known with certainty only from the valley of upper Leona River in Uvalde County, Texas, perhaps also shortly to the w. in adj. Kinney County. — Map 8.-Fl. V-VI.

Characters other than the long pod listed by Isely (1972: 276) as supporting the status of var. chamaedrys are ineffective: in Arizona the petiole of larger leaves reaches 9 mm, and the flowers vary from 3 to 7, exceptionally 9 per capitulum. Isely’s count of 2-5 flowers per capitulum, modified (1973: 79) to 2-4, is incompatible with a 7-flowered capitulum evident on Wright 1367 (NY).