apocynum genus --- Dogbane family

spreading dogbane (Apocynum androsaemifolium) -- in June  -- Gateway, Poudre Canyon, Roosevelt National Forest, CO    red & pink       

spreading dogbane (Apocynum androsaemifolium)  -- in July -- Klamath Falls to Ashland (Rt. 66), OR        ​red & pink  

Indian hemp (Apocynum cannabinum) -- in June -- Pineridge Natural Area, Fort Collins, CO             white & cream     

                                                                                      gynostegium

Indian hemp (Apocynum cannabinum) -- in June -- Watson Lake State Wildlife Area, CO  

Indian hemp (Apocynum cannabinum) -- in July -- Magpie Meander, Fort Collins Natural Area, Larimer County, CO