LABIATAE 271 



25. THYMUS L. 

 1. Thymus Serpyllum L. Wild or Creeping Thyme. (Man. p. 

 So2 ; I. ¥./. 3166.) lu thickets, woods and along roadsides, N. S. to 

 Mass., N. Y., Pa. and N. C. Nat. from Eu, — Pennsylvania: Mont- 

 gomery ; Lancaster. 



26. KOELLIA Moench. 

 l,eaves with prevailingly linear, linear-lanceolate, or oblong-lanceolate blades. 

 Calyx-lobes triangular-ovate, merely acute. i. K. Virginiana. 



Calyx-lobes subulate, subulate-lanceolate, sometimes bristle-tipped. 



2. K.flexuosa. 

 Leaf-blades linear or narrowly linear. 

 Leaf-blades lanceolate, all or some of them toothed. 

 Flower clusters, dense : bracts erect or appressed. 



Plant hirsute or pilose. 3. K. pilosa. 



Plant glabrate or merely puberulent. 4. K. verticillaia. 



Flower-clusters lax : bracts spreading. 5. K. clinopodioides. 



Leaves with prevailingly-ovate, oblong-ovate or ovate-lanceolate blades. 

 Calyx-lobes subulate. 6. K. incana. 



Calyx-lobes triangular. 7. K. muitca. 



1. Koellia Virginiana (L. ) MacM. Virginia Mountain-mint- 

 (Mau. p. 801 ; I. F. /. 31^5 ■) In dry fields and thickets, Quebec to 

 Minn., Ga., Ala. and Ky. — Pennsylvania : Northampton; Bucks; 

 Delaware ; Chester ; Lancaster ; Luzerne ; Franklin ; Hunt- 

 ingdon ; C-^mbria ; Erie ; Fayette ; Allegheny. 



2. Koellia flexuosa (Walt.) MacM. Narrow-leaved Mountain- 

 mint. (Man. p. 801 ; I. F. f. 3154.) In fields and thickets, Me. and 

 N. H. to Fla., Ont., Kans. and Tex. — Pennsylvania: Northampton; 

 Bucks ; Delaware ; Chester ; Lancaster ; York ; Perry ; Arm- 

 strong ; Allegheny. 



3. Koellia pilosa (Nutt. ) Britton. Hairy MounTain-mint. (Man. 

 p. 801 ; I. 'P. f. 3/36.) On prairies and in dry woods, Ohio to Ga., Kans. 

 and Ark. — Pennsylvania : Monroe ; Huntingdon. 



4. Koellia verticillata (Micbx.) Kuntze. Torrey's Mountain- 

 mint. (Man. p. 801; I. F. / 5157.) In dry fields and thickets, Vt. 

 to R. I., N. Y., Va., Pa. and Mo. — Pennsylvania: Northampton; 

 Bucks ; Lancaster ; Dauphin ; Lycoming ; Allegheny. 



5. Koellia clinopodioides (T, & G.) Kuntze. Basil Mountain; 

 mint. (Man. p. 801 ; I. F. /. 3158.) In dry soil, N. Y. and Pa. to 

 Tenn. — Pennsylvania : Monroe ; Northampton ; Bucks ; Delaware ; 

 Lancaster; Berks. 



6. Koellia incana (L. ) Kuntze. Hoary Mountain-minT. (Man. 

 p. 802 ; I. F.y. J/6/.) Dry thickets and hillsides. Me. to Ont., Ohio and 

 Fla. — Pennsylvania : Monroe ; Northampton ; Bucks ; Delaware ; 

 Chester ; Lancaster ; Franklin ; Bedford ; Huntingdon ; West- 

 moreland ; Allegheny. 



7. Koellia mutica (Michx. ) Britt. ShorT-toothed Mountain-mint. 

 (Man. p. 802 ; I. F.y; 3164.) In sandy soil, Me. to Va. and Fla., west 

 to Mo. — Pennsylvania : Northampton ; Delaware; Bucks; Chester. 



