No. 17] FLOWERING PLANTS AND FERNS 187 
CALLITRICHACEAE. Water Starwort Family. 
CALLITRICHE L. Water Starwort. 
Callitriche Nuttallii Torr. (C. pedunculosa Nutt.) Nuttall’s 
Water Starwort. 
Damp open ground in the southern counties (Mohr). Feb.- 
March. 
EMPETRACEAE. Crowberry Family. 
CERATIOLA Michx. 
Ceratiola ericoides Michx. Heather-like Ceratiola. 
Drifting sands along the coast and islands. Horn Island; 
Cat Island. August-September. 
Geol. Surv. Herb. 
BUXACEAE. Box Family. 
PACHYSANDRA Michx. 
Pachysandra procumbens Michx. Mountain Spurge. 
Rich shaded limestone slopes, northeast Mississippi; slopes 
of Tennessee River near Eastport. April-May. 
Geol. Surv. Herb. 
ANACARDIACEAE, Cashew Family. 
RHUS L. Sumach. 
Rhus copallina L. Dwarf Sumach. 
Throughout the state, on dry sandy or rocky uplands. 
Tishomingo Co.; Pontotoc; Oxford; Ripley; Jackson. June. 
Geol. Surv. Herb. Allison Herb. 
Rhus elabra L. Smooth Sumach. 
Throughout the state on light soil. Tishomingo Co.; Pon- 
totoe Co.; Lafayette Co.; Hinds Co. June. 
Geol. Surv. Herb. Allison Herb. 
Rhus vernix L. (R. venenata DC.) Poison Sumach. 
Perhaps throughout the state in shady swamps; not com- 
mon. DeKalb; Newton; Bay St. Louis (Allison). May. 
Allison Herb 
