ILICAGEAE. 215 



Family 2. BUXACEAE Dumort. Box Family. 

 1. PACHYSANDRA Michx. 

 1. PachysandrA' proctjmbens Miohx. Mountain Spurge. M. p. 599. In- 

 troduced from the South. Woods. Early spring. 

 Delaware— Darby Greek near Hayerford (he.), Collen Brook, Upper 

 Darby and Radnor (B. Sm.). 



Family 3. LIMNANTHACEAE Lindl. False-mermaid Family. 

 1. FLOEBKEA Willd. 

 1. FLOEKKEAPROSEEPiNAConMES Willd. False Mermaid. M. p. 599. Marshes 

 and river banks. Spring. ' 



Family 4. ANACARDIACEAE. Sumac Family. 

 1. RHUS L. Sumac. 



Fruit pubescent; stone smooth. 



Bachis of the leaf wing-margined. 1. B. copaltiiia. 



Bachis of the leaf nearly terete. 



Foliage and twigs velvety ^pubescent. 2. B. hirta. 



Foliage of the twigs mostly glabrous and glaucous. 3. B. glabra. 

 Fruit glabrous ; stone, striate. 



Leaflets 7-13, glabrous. 6. B. vernix. 



Leaflets 3, more or less pubescent beneath. 7. B. radicans. 



1. Bhus copallina L. Black Sumac. M. p. 600. Dry soil. Summer. 



2. Bhus hirta (L.) Sudw. Staghom Sumac. M. p. 600. Dry, rocky soil. 



Spring. 



3. Rhus glabra L. Scarlet Sumac. M. p. 600. Rocky or barren soil. 



Summer. 



4. Rhus Vernix L. Poison Sumac. M. p. 601. Swamps. Early summer. 



5. Rhus radicans L. Poison Ivy, Poison Oak. , M. p. 601. Thickets. 



Spring. 



Family 5. ILICACEAE Lowe. Holly Family. 



Petals oblong or obovate, slightly united. 1. Ilex. 



Petals linear, distinct. 2. Ilicioides^ 



1. ILEX L. 



Leaves thick, evergreen, persistent. 



Nutlets ribbed; leaves spiny -toothed. 1. I. opaoa. 



Nutlets not ribbed; leaves dotted beneath. 2. I. glabra. 

 Leaves thin, deciduous. 



Flowers all short-pedicelled. 3. I. verticillata. 



Staminate flowers on long and slender pedicels. 4. I. laevigata. 



1. Ilex opaca Ait. American Holly. M. p. 603. Moist woodlands. Spring. 

 Bucks— Bristol (Fr.). Delaware— Tinicum, Dr. Geo. Smith (B. Sm.). 

 Chester— (P.). Lancaster— York Furnace (Cr.). Dauphin — (P.). 

 -' N&w JeYsey— Common. ■ ' 



New Castle— Holly Oak, Old Blue Bell, Folly Woodsy Silverside. Rare 

 in northern part of county. 



