188 MISSISSIPPI STATE CHEOLOGICAL SURVEY [Bull. 
Rhus hirta (L.) (Rhus t: plna L.) Staghorn Sumach. 
Dry upland woods :nd borders of fields. A small tree 
10-14 feet high. Hinds (o.; Martin (Tracy). June. 
Rhus radicans L. (R. toxicodendron vulgare Michx.) Poison 
Ivy. Poison Vine. 
Throughout the state, climbing over trees. May. 
Geol. Surv. Herb. Allison Herb. 
Rhus toxicodendron L. (R. toxicondendron querifolium Michx. ) 
Poison Oak. . 
On sandy upland soil. Tishomingo Co.; Oxford; Jack- 
son; Hattiesburg; Montrose. April. 
Geol. Surv. Herb. Allison Herb. 
CYRILLACEAE. Cyrilla Family. 
CYRILLA L. 
Cyrilla racemiflora L. Black Ti-ti. Leatherwood. 
Borders of swamps and streams in the pine barrens. Hat- 
tiesburg; Bay St. Louis. June. 
Geol. Surv. Herb. Allison Herb. 
CLIFTONIA Banks. 
Cliftonia monophylla (Lam.) Britton (C. ligustrina Spreng.) 
ict 
Pine barrens swamps. Biloxi (Tracy) ; Hancock Co. (Al- 
lison); Landon; Hurley. March. 
Geol. Surv. Herb. 
ILICACEAE. Holly Family. 
ILEX L. Holly. 
Ilex opaca Ait. Common Holly. 
Throughout the state on rich wooded slopes and lowlands. 
Tishomingo Co.; Lafayette Co.; Hinds Co.; Warren Co. Apr. 
Geol. Surv. Herb. Allison Herb. 
