Spring Flora of Oklahoma 229 
Hydrastis __ 45 
Hydro phyllacese__ 141 
Hymenocallis _ 13 
Hymenopappus __ 199 
Hypoxis__ 14 
Ilicaceae _ _ 98 
Illinois Mimosa _ 66 
Ilex __ __ 98 
Ill-scented Sumac _ 97 
Indigofera ***. _ 78 
Inoxalis__ 83 
Ipomoea _ _1_ 138 
Ironwood__ 22 
Iridaceae_ _ _ 14 
Iris Family _ 14 
Jack-in-the Pulpit - 1 
Juglandaceae__ 16 
Juglans__ 2 
Kallstroemia — - 87 
Kentucky Coffee-tree _ 69 
Knot-grass — - 36 
Kneiffia _116 
Krameria Family _ 7 
Krameria — - 7 
Krigia__182 
Labiatae _ __ _,_ ___ 150 
Lamium__153 
Lance-leaved Psoralea _ 76 
Lance-leaved Sage _ 154 
Large-bracted Psoralea _ 76 
Large-bracted Vervain _149 
Large-bracted Wild Indigo_ 72 
Large-bracted Plantain _170 
Large-flowered Beard-tonguie _164 
Large-flowered Tickseed _198 
Large-flowered Verbena _149 
Large-flowered Yellow T Flax _ 86 
Large-white Wild Indigo _ 73 
Larkspur, Carolina _ 46 
Lavauxia_ _ 117 
Least Bluets _... _172 
