THE AMERICAN BOTANIST 49 



ORCHIDACEAE. 



Yellow lady's slipper (Cypripedium parviHorum) . Yellow. 



Purple lady's slipper (Cypripcdium acaule). Pink. 



Montana lady's slipper (Cypripedium Montanum). Pink. 



Showy orchis ( Orchis spcctabilis) . Pink. 



Arethusa (Arcthusa bulbosa). Pink. 



Pogonia (Pogonia opJvioglossoidcs) Pink. 



Calopogon (Calopogon pulchclhis). Pink. 



Purple fringed orchis (Habcnaria psycodcs). Pink. 



White fringed orchis (Habcnaria blcphariglottis) . White. 



White bog orchis (Habcnaria nivea). White. 



White bog orchis (Habcnaria dilatata). White. 



Wood rein orchis (Habcnaria clcgans). White. 



Sierra rein orchis (Habcnaria Icucostachys). White. 



Lady's tresses (Spiranthcs ccmna). White. 



Lady's tresses (Spiranthcs odorata). White. 



Rattlesnake plantain (Epipactis pubcsccns). White. 



PIPERACEAE. 



Lizard's tail (Sanrurus ccrnuus) . White. 



FAGACEAE. 



Chestnut (Castanca dcntata). Cream. 



POLYGONACEAE. 



Butter balls (Eriogonum compositum). Yellow. 

 Alpine smartweed (Bistorta bistort oidcs). White. 



NYCTAGINACEAE. 



Pink Sand verbena (Abronia villosa). Pink. 

 Yellow sand verbena (Abronia latifolia). Yellow. 



AIZOACEAE. 



Sea fig (Mcscinbryanithcnmni acquilateralc). Pink 



NYMPHAEACEAE. 



White water lily (Castalia odorata). White. 

 Pond lily (Nymphaea advena). Yellow. 

 American lotus (Nclurnbium lutcum). Yellow. 



