LAMIACEAE 1051 



long : pedicels slender, 5-10 mm. long : calyx glandular-pilose, 4 mm. long, becoming 7 

 mm. long, the upper lip of 3 triangular or triangular-lanceolate lobes, the lower lip of 2 

 lanceolate subulate-tipped lobes : corolla tawny, 1 cm. long, the upper lip of 2 broad lobes, 

 the lower lip of 2 ovate lateral lobes and a large laciniate middle lobe. [Collinsonia verti- 

 cillata Buldw.'] 



In rich woods, North Carolina to Tennessee, Georgia and Mississippi. Spring and summer. 



2. Micheliella anisata (Sims) Briq. Eootstock knotted. Stems glandular-pubes- 

 cent, often tufted, 3-6 dm. tall, branching above : leaves opposite ; blades thickish, oblong, 

 elliptic to broadly oval, 8-15 cm. long, acute or slightly acuminate, serrate or serrate-den- 

 tate, cuneate to subcordate at the base ; petioles 1-5 cm. long : pedicels 3-9 mm. long : calyx 

 glandular-pilose, 4 mm. becoming 10 mm. long, the upper lip with 3 triangular lobes, the 

 lower lip with 2 lanceolate lobes : corolla cream -colored, 12-13 mm. long, the upper lip of 

 2 broadly ovate lobes, the lower lip with lateral lobes similar to those of upper lip and a 

 large lacerate middle lobe. [Collinsonia anisata Sims.] 



In sandy pine or oak woods, South Carolina to Florida and Alabama. Summer. 



40. COLLINSONIA L. 



Perennial caulescent herbs, with aromatic herbage. Leaves opposite : blades flat, 

 toothed, petioled. Flowers in terminal panicled racemes. Calyx spreading or declined 

 at maturity : tube campanulate, 10-ribbed, 2-lipped : upper lip of 3 short lobes : lower lip 

 of 2 longer narrower lobes. Corolla colored, not showy: tube obliquely campanulate : lobes 

 5, 4 nearly equal, the fifth much larger, pendant or declined, lacerate or fringed. Anther- 

 bearing stamens 2, exserted : filaments coiled before anthesis, connected by a woolly ring 

 at the base. Nutlets smooth. HORSE-BALM. STONE-BOOT. 



Branches of the inflorescence glandular-pubescent. 1. C. punctata. 



Branches of the inflorescence puberulent. 



Stems rigid : leaf-blades mostly over 10 cm. long, many-toothed : pedicels becom- 

 ing 6-9 mm. long. 2. C. Canadensis. 

 Stems reclining : leaf-blades mostly less than 8 cm. long, coarsely few-toothed : 



pedicels becoming 2-4 mm. long. 3. C. tuberosa. 



1. Collinsonia punctata Ell. Stems erect, 4-9 dm. tall, more or less branched : 

 leaf-blades rhombic-ovate or ovate, or elliptic to ovate on upper part of stem, 2-8 cm. long, 

 acute or slightly acuminate, serrate, cuneate at the base : panicles with glandular-pubes- 

 cent branches : pedicels 3-8 mm. long : calyx glandular-pilose, 2 mm. becoming 8 mm. 

 long, the upper lip of 3 acute hooked lobes, the lower lip of 2 lanceolate lobes, these much 

 longer than the tube : corolla about 1 cm. long, the upper lip of 2 ovate lobes, the lower 

 lip with lateral lobes similar to those of upper lip and a large lacerate middle lobe : nutlets 

 subglobose, at least 1.5 mm. in diameter. 



In woods, North Carolina to Georgia and Louisiana. Summer and fall. 



2. Collinsonia Canadensis L. Stems erect, solitary or tufted, 3-8 dm. tall, branch- 

 ing above : leaf-blades oblong, elliptic or oval, short-acuminate, rather coarsely dentate- 

 serrate, cuneate to truncate at the base : panicles with puberulent branches : pedicels 4-8 

 mm. long : calyx minutely glandular-pubescent, 3 mm. long, becoming 10 mm. long at 

 maturity, the upper lip with 3 acute upcurved lobes, the lower lip of 2 subulate lobes : 

 corolla about 1 cm. long, the upper lip of 2 rounded-ovate lobes, the lower lip with lateral 

 lobes much like those of upper lip, its middle lobe larger, lacerate-fimbriate, 3-5 mm. 

 long : nutlets suborbicular, about 2 mm. in diameter. 



In moist woods, Maine to Ontario, Wisconsin, Florida and Kansas. Summer and fall. 



3. Collinsonia tuberosa Michx. Stems spreading or reclining, 3-10 dm. long, 

 simple or loosely branched : leaf-blades thin, ovate, 5-8 cm. long, acute or acuminate, 

 coarsely serrate, broadly cuneate or almost truncate at the base : panicles with puberulent 

 branches : calyx about 2 mm. becoming 3.5-4 mm. long, puberulent, the upper lip of 3 lan- 

 ceolate-acuminate hooked lobes, the lower lip of 2 lanceolate-subulate lobes, these much 

 longer than the tube : corolla 6-7 mm. long, the upper lip with 2 broad rather obtuse 

 lobes, the lower lip with 2 broad acutish lateral lobes and a large lacerate middle lobe. 



In woods, North Carolina to Georgia and Alabama. Fall. 



41. PERILLA Ard. 



Annual caulescent herbs, with more or less purple foliage. Leaves opposite : blades 

 flat, toothed, petioled. Flowers in terminal racemes or panicles. Calyx usually pubes- 

 cent : tube campanulate, 10-ribbed : lobes nearly equal during anthesis, more or less ac- 

 crescent and disposed into 2 lips at maturity. Corolla dull-colored, oblique at the throat, 



