OllliER I. 



TETRANDRIA MONOGYNIA. 



43 



*343. HOUSTO'N/^! L. HOUSTONIA. (W. Houston, M. D., a British botanist, d. 1733.) Rubiacete. 215. 



2857 caerulea L. blue, .flowered A pr I my.au L.B N. Amer. 1785. D s.p Bot. mag. 370 



2858 purpurea Z/. purple-cowered^ A pr 1 my.au P N. Amer. 1800. D co 



