106 



XETKANDRIA MONOGYNIA. 



Diodia. 



In sandy wet places^ on road sides : Virginia to Carolina. 

 ^.June — Aug. v. v. Stem smcothj purple j flow- 

 ers white. 

 hirsutn. 2. D. undique hirsutissima ; caulibus procumbentibus te- 



tragonis, foliis lineari-oblanceolatis, coroUis intus 

 dense-barbatis, fructibus ovatis hirsutis. 



In sandy fields : Georgia near Savannah. 1/. July. v. v. 

 Stems very branching ; flowers white, larger than th« 

 former species. 



134. HOUSTONIA. Gen.pl. l6l. 



ccerulea. 1 • H. caule erecto setaceo dichotomo, foliis radicalibns spa- 



thulatis, caulinis oblance.olatis oppositis, pedunculis 

 iinifloris elongatis.— ;^i//flf. sp.pl. i.p.583. 

 Poiretia erecta. Gmel. syst.lQo. Anonymos. Walt.Jl. 



car. 86. 

 Icon. Bot. mag. 370. Pluh. aim. t. Qj.f. Q. 

 elatior. «• H. caule pedunculisque erectis, floribus magnis cce- 



ruleis. 

 minor. /3. H. caule divaricato, floribus plerumque albis. 



From New England to Florida : a in rocky situations : 

 /3 along the sandy sea-coast. 1/ . April, May. v. v. 

 Flowers a beautiful blue, sometimes white. 

 serpyllifolia. 2. H. caule procumbente caespitoso, foliis spathulatis ob- 

 tusis, pedunculis terminalibus unifloris longis. Mich. 

 Ji.av)er. l.p.SS. 

 In high mountains, near rivulets and springs : Virginia 

 to Carolina. 1/ . May. v. v. Flowers blue. 

 tenella. 3. H. caule repente filiformi, foliis orbiculatis acutis nervo- 



sis, pedunculis terminalibus unifloris longissimis. 

 On high mountains : North Carolina. Lyoii. 2i.Jnne. 

 r. s. in Herb. Lyon. Flowers purple ; smaller than 

 the second species, which it resembles very much, 

 rotund'ifuUa. 4. H. caule repente, foliis suborbiculatis abrupte petiolatis 

 crassiusculis, pedunculis axillaribus solitariis unifloris. 

 — Mich. ft. amer. l.p.SS. 

 Poiretia procumbens. Gmel.syst.lQ3. Kmuyrcio?,. Walt. 



fi. car. 86. 

 Along the sea-coast : Virginia to Florida. 1/ . March — 

 May. v.v. Flowers white j leaves evergreen. 

 avguslifolia. 5, H. caule erecto ramosissimo glabro, foliis linearibus, 

 floribus terminalibus fasciculatis subsessilibus, sxpe 

 ternis. — Mick. ft. amer. 1. p. 85. 



