106 
hirsuta . 
coerulea . 
elatior. 
minor. 
serpyllifolia . 
tenella . 
rotundifolia * 
angustifolia. 
TETRANDRIA MONOGYNIA. DiodlS. 
In sandy wet places, on road sides : Virginia to Carolina. 
7/ . June — Aug. z;. 2 /. Stem smooth, purple 5 flow- 
ers white. 
2 . D. undique hirsutissima 3 caulibus procumbentibus te- 
tragonis, foliis lineari-oblanceolatis, corollis intus 
dense- barbatis, fructibus ovatis hirsutis. 
In sandy fields : Georgia near Savannah. 1/ . July. v. v. 
Stems very branching 3 flowers white, larger than the 
former species. 
134. HOUSTON I A. Gen.pl. 101. 
1 . H. caule erecto setaceo dichotomo, foliis radical ibus spa- 
thulatis, caulinis oblanceolatis oppositis, pedunculis 
unifioris elongatis. — Willd. sp.pl. 1 . p. 583. 
Poiretia erecta. Gmel. syst. 203. Anonymos. WaXt.jl. 
car. 86. 
Icon. Bot. mag. 3jO. Pluh. aim. t. 97 . f 9 . 
a. H. caule pedunculisque erectis, floribus magnis coe- 
ruleis. 
/3. H. caule divaricato, floribus plerumque albis. 
From New England to Florida : a in rocky situations : 
/3 along the sandy sea-coast. 7/. April, May. v. v. 
Flowers a beautiful blue, sometimes white. 
2 . H. caule procumbente caespitoso, foliis spathulatis ob- 
tusis, pedunculis terminalibus unifioris longis. Mich. 
Ji. amer. 1. p. 85. 
In high mountains, near rivulets and springs : Virginia 
to Carolina. 7/ . May. v. v . Flowers blue. 
3. H. caule repente filiformi, foliis orbiculatis acutis nervo- 
sis, pedunculis terminalibus unifioris longissimis. 
On high mountains : North Carolina. Lyon. 2 /:. June. 
v. s. in Herb. Lyon. Flowers purple 3 smaller than 
the second species, which it resembles very much. 
4. H. caule repente, foliis suborbiculatis abrupte petiolatis 
crassiusculis, pedunculis axillaribus solitariis unifioris. 
— - Mich.Jl . amer. 1. p. 85. 
Poiretia procumbens. Gmel. syst. 263. Anonymos. Walt, 
jl. car. 86. 
Along the sea-coast : Virginia to Florida. 7/ . March- 
May. v. v. Flowers white 3 leaves evergreen. 
5. H. caule erecto ramosissimo glabro, foliis linearibus, 
floribus terminalibus fasciculatis subsessilibus, saepe 
ternis. — Mich. jl. amer. I. p. 85. 
