130 Order LAMIALES 
Calyx teeth all about equal in length. 2. H. hispida. 
Lower calyx teeth much longer than the upper. 3. H. longiflora. 
1. Hedeoma pulegioides (L.) Pers. American Pennyroyal. 
Dry soil in the southeastern part of the state. Arago; Nebraska 
City. 
2. Hedeoma hispida Pursh. Rough Pennyroyal. 
Common in dry soil all over the state. Box Butte county; Broken 
Bow; Fairmont; Nebraska City; Plainview; Thedford; Valentine; 
Walton. 
3. Hedeoma longiflora Rydb. 
In dry soil in the western part of the state. Banner county; Bel- 
mont; Cheyenne county; Lewellen; Valentine. 
18. Koellia. 800. 
1. Koellia virginiana (L.) MacM. Mountain Mint. 
In dry fields and thickets throughout the state. Dismal River; Holt 
county; Long Pine; Newark; Oreopolis; Pishelville; Richardson 
county; Wood River. 
19. Lycopus. 803. 
Calyx teeth triangular, in fruit shorter than the nutlets; bracts 
short. 
Corolla lobes erect, stamens and style included. 1. L. virginicus. 
Corolla lobes spreading, stamens and style exserted. 2. L. uniflorus. 
Calyx teeth subulate, in fruit longer than the nutlets; bracts some 
of them as long as the calyx. 
Leaves incised or pinnatifid. 3. L. americanus. 
Leaves sharply serrate. 4. L. asper. 
1. Lycopus virginicus L. Bugle-weed. 
Common in wet soil all over the state. Bellevue; Carns; Cody’s 
Lakes; Endicott; Lincoln; Nebraska City; Thedford. 
2. Lycopus uniflorus Michx. 
In moist soil probably over most of the state. Burwell; Long Pine; 
Loup City; Red Cloud. 
3. Lycopus americanus Muhl. Water Hoarhound. 
Common in wet soil, frequently growing along the margins of ponds 
and streams. Banner county; Cherry county; Cody’s Lakes; Endi- 
cott; Lincoln; Nebraska City; Paddock; Thedford; Valentine. 
4. Lycopus asper Greene. 
Mostly along sandy banks and margins of pools. Bassett; Burwell; 
Callaway; Newark; Thedford; Valentine. 
20. Mentha. 804. 
Flowers in terminal spikes. 1. M. piperita. 
Flowers in axillary clusters. 2. M. canadensis. 
1. Mentha piperita L. Peppermint. 
Long Pine. 
2. Mentha canadensis L. Wild Mint. 
In wet soil, often forming borders along streams and ponds. Ban- 
ner county; Cheyenne county; Ft. Robinson; Lincoln; Nebraska City; 
Paddock; Sioux county; Whitman. 
