I76 UNIVERSITY OF MISSOURI STUDIES [324 



Baltimore (Rydberg). Near Magnolia; Sugarloaf Mt. ; Spen- 

 cer Mt. (Ramaley). 



Newfoundland to Alaska; New York and Michigan to 

 Colorado and Oregon. 



Order 32. MYRTALES. 

 Family 77. LYTHRACEAE Lindl. Loosestrife family. 



2931/2. AMMANNIA L. 



720^. A. coecinea Rottb. Scarlet ammannia. 



Marshall lake (W. W. Robbins). 



Michigan to South Dakota ; Florida to Mexico : South 

 America. 



294. LYTHRUM L. Loosestrife. 



721. L. alatum Pursh. Winged loosestrife. 



Common in swales in the plains. 5100-5600 ft. (Daniels, 



4I3)- 



Massachusetts to South Dakota ; Kentucky to Colo- 

 rado. 



Family 78. EPILOBIACEAE D C. Willowherb family. 



295. CHAMAENERION Adans. Fireweed. 



722. C. angustifolium (L.) Scop. [Epilobium angustifolium 

 L.]. Great willow-herb. Narrow-leaved fireweed. 



Common throughout, especially in burns and in aspen thick- 

 ets, 5700-10000 (Arapahoe Trail) ft. (Daniels, 211). Also at 

 Caribou, and in the mountains between Sunshine and Ward 

 (Rydberg). A form from the foothills has white flowers 

 (Daniels, 196). 



Greenland to Alaska ; North Carolina to California : 

 Europe: Asia. 



722a. C. angustifolium platyphyllum Daniels. Nov. var. 



Leaves remarkably large and broad, some being 17 cm. long 



and 4 cm. broad, and merely acutish at apex ; lateral nerves 



