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Family	Scientific Name	Common Name	Habitat	Distribution
Lamiaceae	Hedeoma acinoides	Slender Hedeoma	In shallow soils over limestone.	Sc. TX, e. Edwards Plateau, and Lampasas Cutplain, also e. and se. Coastal Plain of TX.
Lamiaceae	Hedeoma drummondii var. drummondii	Drummond's Hedeoma	Blackland prairies.	MN and MT south to TX, n. Mexico, and CA; disjunct eastward in MS and AL.
Lamiaceae	Hedeoma hispida	Rough Pennyroyal, Mock Pennyroyal	Prairies, Disturbed areas, pastures, barrens, granitic flatrocks, especially in exposed, thin soil; apparently adventive eastwards in the eastern portions of our area from farther west, but the native distribution unclear.	BC and NM east to ME, MA, PA, VA, NC, SC, and GA. Irving (1980) shows H. hispida east to e. Panhandle FL, c. AL, nc. TN, and s. OH; some of the scattered records further east are adventive. It may be recently arrived farther east or was previously overlooked. First reported for SC by Hill & Horn (1997).
Lamiaceae	Hedeoma pulegioides	American Pennyroyal	Dry soils of woodlands, roadbanks, woods-roads, especially common in shaly parts of the mountains.	NS, s. QC, s. ON, MI, WI, and IA south to c. SC, c. GA, and AR.
Lamiaceae	Hedeoma reverchonii	Reverchon's Pennyroyal, Rock Hedeoma	Calcareous outcrops.	Sw. AR and s. OK south to se. and c. TX.
Lamiaceae	Hedeoma serpyllifolia	Thyme-leaf Pennyroyal, Thyme-leaf Hedeoma	Open, calcareous outcrops.	C. TX.

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