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10i6 LAMIACEAE 



2. Koellia Virginiana (L. ) Britton. Stems minutely pubescent, 4-9 dm. tall, 

 branched above : leaf-blades lanceolate or linear-lanceolate, 2-5 cm. long, acute, mostly 

 entire, sessile or nearly so : clusters 8-10 mm. in diameter : bracts linear-lanceolate to nar- 

 rowly linear : calyx 3.5-4 mm. long, finely pubescent ; lobes triangular, acute, about ^ as 

 long as the tube : corolla G-7 mm. long, the upper lip ovate, notched, the lobes of the lower 

 lip oblong or ovate. [Pycnavthemum lanceolatum Pursh.] 



In dry soil, often in thickets, Quebec and Ontario to Minnesota, Georgia, Alabama and Nebraska. 

 Summer and fall. 



3. Koellia flexuosa (Walt.) MacM. Stems slender, glabrous, solitary or tufted, 3- 8 



dm. tall, branched above : leaf-blades narrowly linear to linear-tiliform, 1-4 cm. Ion 



acute, entire, sessile : clusters dense, 6-8 mm. in diameter : bracts lanceolate, acuminate 



calyx 3.5 mm. long, woolly; lobes triangular-lanceolate, somewhat acuminate: corolla 



pink or white, 6-7 mm. long, pubescent within and witliont, the upper lip ovate, minutely 



notched, magenta-spotted, the lower lip 3-lobed, its middle lobe longer and narrower than 



the lateral lobes. [Pycnanthemum lini/olium Pursh. ] 



In dry soil, mostly in meadows or thickets, Ontario to Minnesota, Massachusetts, Florida and 

 Texas. Summer and fall. 



4. Koellia pilosa (Nutt. ) Britton. Stems densely somewhat cinereous-pubescent, 4-13 

 dm. tall, often branched above : leaf-blades lanceolate to linear-lanceolate, 2-6 cm. long, 

 acute, sessileor nearly so : clusters 1-1.5 cm. thick : bracts about as long as the calyx, densely 

 pubescent : calyx 4-5 mm. long, minutely pubescent : lobes lanceolate, acute, about ^ as 

 long as the tube : corolla 7-8 nun. long, minutely pubescent, the upper lip oblong-ovate, 

 the lower lip with ovate lateral lobes and a linear-oblong middle lobe : filaments and style 

 glabrous. 



On prairies and in dry woods, Ohio to Missouri, Georgia and Arkansas. Summer and fall. 



5. Koellia leptodon (A. Gray) Small. Stems softly pubescent, or glabrate below, 

 5-11 dm. tall, loosely branched : leaf-blades lanceolate to oblong-lanceolate, 2-5 cm. long, 

 acute, shallowly serrate or entire : clusters 1-2 cm. thick : bracts mostly shorter than the 

 calyx, densely pubescent : calyx 5-5.5 mm. long, rather villous ; lobes lanceolate, acumi- 

 nate, about ^ as long as the tube, conspicuously hairy : corolla about 7 mm. long, minutely 

 pubescent, the upper lip ovate, the lower lip with rounded lateral lobes and an oblong 

 middle lobe : filaments and style glabrous. \_Pycnanthemmnpilomm var. ? leptodon A. Gray.] 



In woods, mountains of North Carolina. Summer. 



6. Koellia verticillata (Michx. ) Kuntze. Stems minutely pubescent, deep green, 3-12 

 dm. tall, more or less branclied : leaf-blades lanceolate to almost linear, 2-6 cm. long, acute, 

 remotely or shallowly serrate, ciliolate, sessile : clusters dense, 1-2 cm. thick : bracts lanceo- 

 late to linear : calyx 4-5 ram. long, puberulent ; lobes subulate-lanceolate, ciliolate, ^ as 

 long as the tube : corolla pink or pinkish, 7-8 mm. long, the upper lip oblong, bearded at 

 the apex, the lower lip spotted with garnet, its 3 lobes obtuse. 



In open woods and thickets. Rhode Island to Missouri and Georgia. Summer and fall.— The form 

 with narrow leaf-blades. A'. Torreyi (Pursh) Kuntze. is probably distinct. 



7. Koellia clinopodioides (T. & G. ) Kuntze. Stems softly pubescent, 4-12 dm. 

 tall, often widely branching : leaf-blades lanceolate, narrowly oblong or elliptic, 2-8 cm. 

 long, acute, more or less distinctly serrate, narrowed into petioles : clusters rather loose, 

 2-3 cm. thick : calyx 4 mm. long ; tube ribbed ; lolies lanceolate-subulate, nearly h as long 

 as the tube : corolla pink or purplish, 6 mm. long ; tube surpassing the calyx, the upper 

 lip oblong, minutely pubescent, the lower lip with the middle lobe undulate, broadened 

 above the middle, twice as long as lateral lobes. 



In dry open woods, New York to Pennsylvania, Virginia and Tennessee. Summer. 



8. Koellia mutica (Michx. ) Britton. Stems finely pubescent, densely so above, 6-10 

 dm. tall, branching : leaf-blades ovate to lanceolate, 2-6 dm. long, acute, more or less 

 distinctly toothed, sessile or very short-petioled, the upper mealy pubescent : clusters 

 dense, 1-1.5 cm. thick: bracts narrow, ciliate : calyx 3.5-4 mm. long, finely pubescent, or 

 puberulent in age ; lobes triangular or lanceolate-triangular, i as long as the tube : corolla 

 pink or purplish, about 8 mm. long, the upper lip orbicular-ovate, notched, or sometimes 

 all the lobes obtuse : nutlets fully 1 mm. long. 



In sandy soil, Maine to Missouri and Florida. Summer and fall. 



9. Koellia montina (Michx.) Kuntze. Stems glabrous or nearly so, 3-9 dm. tall, 

 branclied : leaf-blades thinnisli, lanceolate, oblong- or ovate-lanceolate, acute or acuminate, 

 sharply serrate, gradually or abruptly narrowed into short petioles : clusters becoming 

 dense, 1-2.5 cm. thick: bracts linear or lanceolate, ciliate: calyx 4-5 mm. long; lobes 

 lanceolate, acute, branched at the apex, at least when young, } as long as the tube : corolla 



