MARYLAND WEATHER SERVICE 471 



ASCLEPIADACEAE. 



Asclepias tuberosa L. Butterfly Weed. 



Throughout the state; in open dry situations, preferring sandy soil; 

 common. 



Asclepias decumbens L. Decumbent Butterfly Weed. 



Baltimore County, Loch Raven (Robert K. Miller). 



Asclepias lanceolata Walt. Few-flowered Milkweed. 



Coastal Zone; in moist sandy open situations; rare. 

 Worcester County, Ocean City (124S). 



Asclepias rubra L. Red Milkweed. 



Throughout the state; in open moist situations; infrequent. 

 Carroll County, near Westminster (1719). 



Asclepias purpurascens L. Purple Milkweed. 



Throughout the state; in forests and open situations; infrequent. 

 Talbot County, Easton (1712). 



Asclepias incarnata L. Swamp Milkweed. 



Throughout the state; in open wet situations; common. 



Asclepias pulchra Ehrh. Hairy Milkweed. 



Throughout the state, being most abundant in the fresh marshes of the 

 Coastal Zone, frequent in open wet situations throughout the state. 



Asclepias obtusifolia Michx. Blunt-leaved Milkweed. 



Common in the Coastal Zone, frequent in the Midland Zone; in dry open 



situations, preferring sandy soil. 

 Caroline County, Pederalsburg (1627). 



Asclepias exaltata (L.) Muhl. Tall Milkweed. 



Midland and Mountain Zones; in moist forests and open situations; 



infrequent. 

 Garrett County, Deer Park (195G). 



Asclepias variegata L. White Milkweed. 



Throughout the state; in moist and dry forests and open situations; 



frequent. 

 Caroline County, Greensborough (1041). 



Asclepias quadrifolia Jacq. Four-leaved Milkweed. 



Throughout the state; in moist forests; common. 

 Harford County, Deer Creek (1575). 



Asclepias syriaca L. (cornuti Dec.) Common Milkweed. 



Throughout the state; in cultivated and waste grounds; common. 



Asclepias verticillata L. Wborled Milkweed. 



Throughout the state; in open dry situations; infrequent. 

 Montgomery County, Laytonsville (1729). 



