I Lie ACE AE. 215 



Family 2. BUXACEAE Dumoit. Box Family. 

 1. PACHYSANDRA Michx. 

 1. Pachysandra procumbens Michx. Mountain Spurge. M. p. 599. In- 

 troduced from the South. Woods. Early spring. 

 Z>e?a wrt/'e— Darby Creek near Haverford (I^e.), Colleu Brook, Upper 

 Darby and Radnor (B. Sm.). 



Family 3. LIMNANTHACEAE Lindl. False-mermaid Family. 

 1. I'^LOERKEA Willd. 

 1. Floerkea proserpinacoides Willd. False Mermaid. M. p. 599. Marshes 

 and river banks. Spring. 



Family 4. ANACARDIACEAE. Sumac Family. 



1. RHUS L. Sumac. 



Fruit pubescent ; stone smooth. 



Rachis of the leaf wing-margined. 

 Rachis of the leaf nearly terete. 



Foliage and twigs velvety-pubescent. 

 Foliage of the twigs mostly glabrous and glaucous. 

 Fruit glabrous; stone striate. 

 Leaflets 7-13, glabrous. 

 Leaflets 3, more or less pubescent beneath. 



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



2. Rhus 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. opaca. 



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

 Leaves thin, deciduous. 



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



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



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

 5mc As— Bristol (Fr.). Delaware— Tinicum, Dr. Geo. Smith (B. Sm.). 

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

 New Jersey — Common. 



New Castle— Ti.o\\y Oak, Old Blue Bell, Folly Woods, Silverside. Rare 

 in northern part of county. 



