Spring Flora of Oklahoma 235 
Queen’s Delight _ 92 
Quincula__ : _157 
Radicula _ 53 
Raimannia _ 116 
Ranunculaceae _ 44 
Ranunculus__ 47 
Ratibida _196 
Rayless Gaillardia _202 
Rayless Thelesperma _199 
Red Ash _131 
Red-bud__ 68 
Red Clover _ , _,,_ 75 
Red False Mallow _110 
Red Dead Nettle _154 
Red Plum_ 64 
Resinous Skullcap _152 
Reticulate-seeded Spurge _ 95 
Rhamnaceae__103 
Rhus _ 96 
Ribes — _ 60 
Ripple Plantain _ 169 
River-locust__ 77 
Robinia__ 79 
Rock-moss — - 58 
Rosacese__ 61 
Rosa__ 62 
Rose Heath Aster _191 
Rose Family _ 61 
Rose, Pasture _ 63 
Rough-leaved Dogwood --— 126 
Rough False Dandelion _185 
Round-leaf Squaw-weed _204 
Rough Pennyroyal - 156 
Round-leaved Spreading Spurge - 93 
Rough-fruited Spermolepis _125 
Rubiaceae__ 171 
Rubus-- 62 
Ruellia__167 
Rudbeckia__195 
Rue Family _ 87 
Rugel’s Plantain --171 
Rumex__ 84 
Rutaceae__ 87 
Russell’s Eustoma -182 
Sagina __ - 42 
