No. 17]: FLOWERING PLANTS AND FERNS 159 
LIQUIDAMBER L. Sweet Gum. Red Gum. 
Liquidamber styraciflua L. 
Throughout the state, mostly on low lands. The commer- 
i) 
cial variety known as ‘‘Red Gum”’ is confined to alluvial bot- 
toms of large streams. Especially common in the Mississippi 
Delta swamps. February-March. 
PLATANACEAE. Sycamore Family. 
Platanus occidentalis. Sycamore. 
River bottoms throughout the state. May. 
Geol. Survey Herb. 
ROSACEAE. Rose Family. 
SPIREAEA L.  Spirea.. 
Spiraea salicifolia L. 
In low wet copses. Picayune. 
Geol. Survey Herb. 
PORTERANTHUS. _ Britton. 
Porteranthus stipulatus. (Muhl.) Britton. (Gillenia  stipu- 
lacea Nutt.).. Indian Physie. 
In low open woods of northeastern counties. West Point; 
Eastport. On Bull Mountain Creek, Itawamba Co. Summer. 
Geol. Survey Herb. Allison Herb. 
RUBUS L: 
Rubus argutus Link (R. villosus frondosus Torr.) Common 
Blackberry. 
Throughout the state bordering lowland thickets and fence 
rows. May. 
Rubus argutus floridus (Tratt.) Bailey. (R. floridus Tratt.) 
Light sandy soil. 
