198 cushman: byram calcareous marl 



Cornus Aniomum Miller. Not previously reported from the state; 

 observed at Riverside Marsh, south of Mandan and also along the 

 Missouri River, Morton Co. (Aug. 26, 27, 191 7) and Strawberry Lake, 

 McLean Co. 



Arctostaphylos Uva-ursi (L.) Spreng. Found also in sand hills near 

 Lake George, 15 rniles north of Drake, McHenry Co. (No. 415, Aug. 

 28, 1917, D. C. Mabbott). Previously reported from three localities: 

 Walhalla, Milton and Wogansport. Should occur also in the sand hills 

 near Hankinson. 



Utricularia minor Linnaeus. Not previously recorded from the state, 

 although the range commonly given is exceedingly general. Very rare, 

 found growing only in Dawson Slough, Dawson, Kidder Co. (No. 

 255, Aug. 9, 1917). 



Aster angustus (Lindley) Torrey and Gray. [Brachyactis angusta 

 (Lindley) Britton.] Rather common throughout the state, reported 

 from 13 or more counties. Bergman records this from three localities, 

 Fargo, Leeds and Dickinson. 



Erigeron annuus (Linnaeus) Persoon. Not definitely reported pre- 

 viously from the state although the range as ordinarily defined covers 

 the entire northeastern United States. One specimen found near Elsie 

 Lake, Hankinson, Richland Co. (No. 68, July 23, 19 17). 



Bidens comosa (A. Gray) Wiegand. Rather common in northern 

 part of state, especially in Rolette Co., bordering lakes. Bergman 

 reports this plant from Fargo and Leeds. 



PALEONTOLOGY. — Some relationships of the foraminiferal 

 fauna of the Byram calcareous marl} Joseph A. Cushman. 



Introduction 



The Byram calcareous marl as it is exposed at the bridge 

 over the Pearl River at Byram, Hinds County, Mississippi, is 

 the type locality for this division of the lower Oligocene. 

 The formation is mainly a sandy glauconitic marl with thin 

 beds of impure limestone, clay and sand. 



A small sample consisting of a few cubic centimeters of the 

 marl from the type exposure was examined, and gave 68 species 

 and varieties of Foraminifera. These are probably not all, 

 and more will be added by continued search of material. 



Notes on the fauna 



Of the 68 species which I have found from Byram 27 appear 

 to be undescribed, and 8 are recorded under the genus only 



^ Published by permission of the Director of the U. S. Geological Survey. Re- 

 ceived February 24, 1920. 



