120 JP A E 



61. ORNITHOGALUM, 10. 16. 

 umlellatum (star-of-bethlehem.) 



14 2. OROBANCHE, 40. 35. 

 virginiana (false beech-drops, cancer-root.) unlflora 

 (squaw-root, p-w. J. 1(.) scape naked 1 -flowered, amer- 

 icana. 



61. ORONT1UM, "2. 7. 

 aquaticum (floating-arum.) 



222. ORTHOTRICHUM, 56. 4. 

 anomalum. cnpulatum. diaphanum. 



62. ORYZA, 4. 10. 

 saliva (rice.) 



32. ORYZOPSIS, 4. 10. 



asperifolia (mountain rice. Au. if.) culm nakedish : 

 leaves rough. 



221. OSMUNDA, 55. 5. 



cinnamomea (flowering fern. y. J. if.) frond doubly 

 pinnatifid ; fertile ones distinct and panicle-racemed. 

 interrupta. spectabilis. refills. 



2013. OSTRYA, 50. 99. 



virginica (iron-wood, hop hornbeam, g. M. Tj.) leaves 

 ovate-oblong, subcordate. 



105. OXALIS, 14. 73. 



acetosalla (woodsorrel.) violacea (violet woodsorrel.) 

 diUenii (yellow woodsorrel. y. J. 0.) hirsute : stem leafy, 

 erect, rough-haired, stricta (yellow woodsorrel.) cor- 

 niculata. 



81. OXYCOCCUS, 18. 51. 



palustris (low cranberry, r. J. h .) creeping : leaves 

 oval, entire, margin revolute. macrocarpus (cranberry. 

 r. J. b ) leaves oblong, entire, flattish. erythrocarpus. 



52. PANAX, 46. 59. 



tri/olia (dwarf ground-nut.) quinquefolia (ginseng. W. 

 M. U .) root fusiform : leaves ternate, quinate. 



135. PAEONIA, 36. 61. 

 (ffitinalu (Peony.) 



