FLORA OF WASHINGTON AND VICINITY. 83 



Archemora rigida, DC. Cowbane. 

 September. 



Heracleum lanatum, Miclix. Cow-Parsnip. 



High Island ; scarce. Last of May or tirst of June. 



tDaucus Carota, L. Carrot. 



Thoroughly naturalized. For certain peculiarities in the central flowers of the 

 umbels of this plant, see Field and Forest for September, 1877, p. 53. June to Sep- 

 tember. 



ARALIACEiE. 



Ginseng Family. 



Aralia spinosa, L. Hercules' Club. 



Woodley, in one small spot ; around Pierce's Mill, probably planted ; near the Sligo> 

 Creek; also along the Falls Church Road, near Hall's Hill (Professor Chickering)^ 

 Last of August or tirst of September. 



t Aralia racemosa, L. Spikenard. 

 Rather rare. July. 



Aralia nudicaulis, L. Wild Sarsaparilla. 

 Last half of May. 



t Aralia trifolia, Decsne. Dwarf Ginseng. 



Deep shaded ravines, rare. First half of May. 



CORNACEiE. 



Dogwood FAMiLy. 

 tComus florida, L. Flowering Dogwood. 



Middle of Ax)ril to middle of May. 

 t Comus sericea, L. Silky Cornel. Kinnikinnik. 



ISIiddle to end of June. 



Comus stolonifera, Michx. Red-Osier Dogwood. 



June. 



Comus alternifolia, L. Alternate-leaved Cornel. 

 Third week in May. 



t Nyssa multiflora, Wang. Sour Gum. Tupelo. Pepperidge. 



Found flowering ( ^) while yet a mere shrub l*" in height. Last of May» 



C APRIF OLI ACE2B. 



Honeysuckle Family. 

 tSambucus Canadensis, L. Elder. 



Second or third week in June; fruit in July. 



t Viburnum prunifolium, L. Black Haw. 

 First week in May ; fruit in October. 



t Viburnum nudum, L. Withe-rod. 

 Last half of May ; fruit in September. 



