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 Baldw. ] 
In rich woods, North Carolina to Tennessee, Georgia and Mississippi. Spring and summer. 
2. Micheliella anisàta (Sims) Briq. Rootstock knotted. Stems glandular-pubes- 
cent, often tufted, 3-6 dm. tall, branching above: leaves opposite ; blades thickish, nS, 
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-ROOT. 
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 punctàta 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 Canadénsis 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 tuberdsa 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, ben y cuneate or almost truncate at the base: panicles with puberulent 
branches: calyx about 2 mm. becoming 3.5-4 mm. long, puberulent, the ra as 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, 
