CORNACEAE 163 



20. Heraclium. 688. 



1. Heraclium lanatum .Michx. Cow Parsnips. 



In wet soil along streams. Fremont; Long Pine; Newcastle. 



21. Daucus. 688. 



1. Daucus carota L. Wild Carrot. 



Introduced, frequently with alfalfa seed, in various parts of the state. 

 Brunswick; Kearney; Loup City; Nebraska City; Palmer. 



. 3. CORNACEAE. 

 Cornus. 689. 



Fruit light-blue, twigs purple and usually pubescent when young, 

 stone oblique, ridged. 1. C. amomum. 



Fruit white, twigs gray, reddish or if purplish glabrous. 



Upper surface of leaves rough, young twigs rough pubescent. 



2. C. asperifolia. 

 Upper surface of leaves smooth. 

 Twigs reddish. 



Young twigs villose pubescent, stone slightly oblique, longer 



than broad.* 3. C. Interior. 



Young twigs sparingly strigose, stone very oblique, broader 



than long. 4. C. stolonifera. 



Twigs gray, stone subglobose. 5. C. candidissima. 



1. Cornus amomum Mill. Kinnikinnik. 

 In wet soil along streams. Long Pine; Peru; Pishelville. 



2. Cornus asperifolia Michx. Rough Leaved Dogwood. 

 In wet soil along streams over most of the state. Auburn; Callaway; 

 Franklin; Lincoln; Minden; Neligh; Walton. 



3. Cornus Interior (Rydb.) 



Dismal River; Cedar Island; St. James; Pine Ridge. 



3. Cornus stolonifera ]\Iichx. Red-osier Dogwood. 



Common in wet soil along streams throughout the state. Anselmo; 



Kearney; Lincoln; Nebraska City; Pine Ridge; Richardson County; 



Scotts Bluff County; St. James; Thedford; Valentine. 



5. Cornus candidissima Marsh. 



Kearney; Wahoo. 



Subclass INFERAE. 

 RUBIALES. 



Stamens usually 4, calyx and corolla lobes 4, or if 3 fruit didymous. 



1. Rubiaceae. 



Stamens usually 5, calyx and corolla lobes 5, or if 3- or 4-lobed the 



leaves pinnate. 2. Caprifoliaceae. 



1. RUBIACEAE. 



Shrubs or small trees, flowers densely capitate. 2. Cephalanthus. 



Herbs, flowers not capitate. 



Leaves opposite with small stipules. 1. Houstonia. 



