DIDYNAMIA GYMNOSPERMIA. 
405 
472. TEUCRIUM. Gen.pl.9Q0. 
1. T. cano- hirsutissimum ; foliis ovato-lanceolatis serraris» 
omnibus petiolatis, caule erecto, spicis verticillatis 
confertis, bracteis calyce duplo longioribus.— Willd. 
sp. pl. 3. p. 22. 
In low grounds, on the borders of ponds and lakes : Ca- 
nada to New York. 2/. July, Aug. v.v. Flowers 
purple. 
2. T, pubescens j foliis ovaro-oblongis serratis, superioribus 
subsessilibus, caule erecto, spicis verticillatis confer- 
tis, bracteis longitudine calycis,— Willd. sp. pL 3. 
p. 22. 
Icon. Schkuhr handb. 1 QO. 
In low grounds and bogs : New York to Carolina. I/ . 
June — Aug. v . v . Resembles the foregoing species 
very much. 
473. MENTHA. Gen. pl 96 7. 
1. M. floribus verticillatis, foliis lanceolatis serratis petiole- 
tis pilosis, staminibus corollam aequantibus. Willd . 
sp. pl. 3. p. 82. 
In Canada. Kalm. . + • 
2. M assurgens, pubescens j foliis petiolatis ovali-lanceo- 
latis utrinque acutissimis, floribus verticillatis, stami- 
nibus exertis. — Mich.Jl. amer. 2. p. 2. 
On the banks of rivers and near springs : Canada to Pen- 
sylvania 2/. July, Aug. v.v . Flowers pale purple. 
3. M. erecta, glabriuscula j foliis lanceo! ato-ovat is subses- 
silibus, spica gracili, verticillis minimis interrupta, 
staminibus non exertis. Mich.Jl . amer. 2. p. 2. 
M. viridis. Walt. Jl. car. I(5l. 
In wet places, near springs : Pensylvania to Georgia. % 
June — Aug. v. v . Flowers white. 
474. ISANTHUS. Mich. Jl. amer . 2. p. 3. 
1. I. viscido-pubescens $ foliis ovali -lanceolatis utrinque 
acutis 3-nervibus, pedunculis 1-2-floris. Mich. Jl. 
amer. 2. p 4. 
Icon. Mich.Jl amer 2. t. 30. 
On dry hills, in lime-stone soil : Virginia and Kentucky. 
©, July, Aug. v. v . Flowers pale blue. 
canadense . 
virginicum » 
canadensis. 
borealis « 
tenuis.. 
caeruleus, 
