1148 LAMIACEAE 
Leaf-blades nd rounded at the base: stem closely canescent: uir calyx-lobes 
acute or acu T. canadense. 
Leaf-blades mains narrowed at the base: stem downy-canescent: 
roader calyx-lobes obtuse. 
Calyx prominently ribbed at maturity: corolla glandular- 
puberulent. 2. T. Nashii. 
Calyx not ribbed at maturity: corolla pubescent. 3. T. littorale. 
T. canadense L. Es 2-12 dm. tall: leaf-blades relatively thin, ovate to 
elliptic ovate, 6—14 em. long, pubescent be- 
neath: calyx Benne 6-8 mm. long; lower 
lobes acuminate: corolla purplish or pink, 
15-20 m DE nutlets about 2.5 mm. long, 
wrinkled.—Lov v groun nds, fields, river- banks, 
and roadsides, various ‘provi nees, Ga. to Tex., 
Minn., and Me.—Sum 
Kearney. Stem 3-14 dm. 
tall: Pier blades E. elli ipti ie to lanceo- 
late, long, whitish-pubescent be- 
SE ie pm ne mm. long; lower 
m. lo 
g 
Hammocks, thickets, and wet grounds, often 
in ealeareous soil, Coastal Plain, Fla. to Tex., 
and S. C.—Spr.-fall or all year 
T. littorale Bicknell. n 3-5 dm. Bo leaf -blades narrowly elliptie 
h 
to elliptic- =e 6-11 cm. long, pale whitish-pube e bene s : calyx 
becoming 5-6 mm. long; lower jobs Nero pur olla pale-pink, 15-17 mm. long: 
nutlets 2 mm. long. —Low sandy soil, Coastal Plain and New England coast, 
Fla. to Me.—Sum 
. TRICHOSTEMA. L. Annual or perennial herbs or cao plants. 
Leaf-blades entire or repand. Flowers in psum A iid Calyx irregular, 
2-lipped. Corolla somewhat 2-lipped, the upper hing, S S uice surpassing 
pe 
the lower lip. Stamens lying against the lower ion -lip.—About 10 species, 
North American.—The calyx becomes inverted in fruit. 
Annual plant: leaf-blades of a linear or elliptic type. 
oliage viscid-pubescent: leaf-blades elliptic or lanceolate. To purum 
Foliage glabrous or viscid- puberulent: leaf-blades linear. 2. T. linear 
Perennial or biennial plant : leaf-blades of an obovate type. 3. T. SUP TI CECEREE 
T. dichotomum a Plant 1-20 dm. tall: leaf- iss elliptic to broad- 
lanceolate, 2-7 em. long: ae becoming 5-6 mm. long; lobes acuminate: 
corolla blue to.white, about 5 mm. lon 
Fla. to Tex., Mo. and Me.—Sum., or all 
e Nutt. Plant "> dm. 
coming 5-6 mm. 
times pale, 6-10 mm. lo n nutle 
long.—Sandy soil, "fields, thickets, 
Plain, ay New En ngland. coast, Fla. 
and Conn.—Sum 
3. T. suffrutescens Kearney. Plant 2-4 dm 
tall: leaf- blades obovate to oblong- d ue 
