Dyschoriste crenulata Kobuski

PHENOLOGY.— Flowering: February–July, October; fruiting: July, October.

DISTRIBUTION.— U.S.A. (Tex.), Mexico (Coah., Tamps.).

HABITAT.— Thornscrub, disturbed sites, sometimes on limestone.

ELEVATION.— 120–350 meters.

NOTES.— Henrickson (1999) provided a description, discussed the taxonomy, and mapped the distribution of this species (Fig. 2A). The type of D. crenulata (Nelson 6604) is from Tamaulipas.

REPRESENTATIVE SPECIMENS.— Sierra de San Carlos, La Tamaulipeca, vic. of San Miguel, H. Bartlett 10646 (F); along Hwy. 81 between González and Hwy. 85, 38.1 mi SE of jct. Hwy. 85, T. Daniel & B. Bartholomew 5084 (CAS); between Victoria and Antiguo, G. Happ 37 (MO); Mpio. Abasolo, Carr. 80, KM 232 Tampico–Matamoros, tramo Soto la Marina a La Coma, Ejido Los Morales, “La Labor,” 7 km NE de Los Morales, 24°23ʹ08ʺN, 098°21ʹ02ʺW, M. González G. 213 (MEXU); 48 mi from Reynosa on San Fernando rd., 27 mi from Matamoros–San Fernando hwy. turnoff, M. Johnston & J. Graham 4382 (TEX, US); San Fernando to Jiménez [Santander Jiménez], E. Nelson 6604 (holotype: GH-image!; isotype: US-image!); 20 mi W of Reynosa, J. Painter & F. Barkley 14393 (MO, TEX); 3 mi N of Santander Jiménez on Rte. 101, R. Wilbur 35266 (MEXU-image) .