RANUXCULACEAE 51 



6. Corallorhiza. 305. 



Lip entire; whole plant yellow. 1. C. ochroleuca. 

 Lip with 2 lobes or teeth; plant brownish. 



Lip unspotted; lobes small; spur very small. 2. C. coral lorrhiza. 



Lip spotted; lobes prominent; spur manifest. 3. C. multiflora. 



1. Corallorrhiza ochroleuca Rydb. 

 Woods of western Nebraska. 



2. Corallorhiza corallorrhiza (L.) Karst. 

 Shady woods in canons of Sioux County. 



3. Corallorhiza multiflora Nutt. 



Shady woods in the canons of Sioux County. 



Class DICOTYLEDONEAE. 



The dicots. 



Sub-Class THALAMIFLORAE. 



RANALES. 



Land or marsh plants. 

 Carpels several to many. 

 Herbs not climbing. 1. Ranunculaceae. 



Vines. 



Leaves compound, flowers mostly perfect. 1. Racunculaceae. 



Leaves simple, flowers dioecious. 3. Menispermaceae. 



Shrubs or small trees. 6. Anonaceae. 



Carpel single; 2-many ovuled. 2. Berberidaceae. 



Aquatic herbs. 



Leaves floating, peltate or with a deep sinus at the base. 



4. Nymphaeaceae. 

 Leaves mostly submerged and dissected. 



Flowers peduncled, opposite the leaves. 1. Ranunclaceae. 



Flowers sessile, axillary. 5. Ceratophyllaceae. 



1. RANUNCULACEAE. 



Carpels one ovuled; fruit an achene. 

 Petals usually present. 



Sepals spurred; leaves basal, linear; receptable in fruit elongated, 



cylindrical. 1. Myosurus. 



Sepals not spurred; receptacle in fruit splierical, conical or short 



cylindrical. 



Petals white, aquatic herbs. 3. Bartrachium. 



Petals yellow; land or marsh plants. 



Achenes not ribbed. 2. Ranunculus. 



Achenes longitudinally ribbed. 4. Halerpestes. 



Petals wanting; sepals often petaloid. 

 Leaves mostly alternate or basal. 



Leaves all alternate, ternately compound. 5. Thallctrum. 



Leaves or bracts subtending the inflorescence opposite or 

 whorled. 



