MORACMAE. 125 



Family 1. ULMACEAE. Elm Family. 



Flowers borne in clusters on twigs of the preceding season; fruit a samara 

 or nut-like. , , , , , j. Vlrnm , 



a lowers borne on twigs of the season, the pistillate mostly solitary; fruit 

 a dru Pe- 2. Celtis. 



./,-...h .' ..■; 1. ULMiUS. .,;,■ 



Leaves slightly rough above; samara densely oiliate. 1. V. Americana. 



Leaves very rough ^atao.ve,; samara not xil^atq. 2.U. fulva. 



1. Ulmus Americana L. American White Elm. M. p. 338. Moist woods, 



especially along rivers in. rich soi}.. Early spring.. 



2. CJlmus pulva Michx. Slippery or Bed Elm. M. p. 338. Woods. Early 



spring'.'" '■' ' 



2. CELTIS L. 



Leaves smooth above. : 1. C. occidentalis. 



Leaves scabrous above. .■"(.■■.: 2. C. crassifoUa. 



1. Celtis occidentalis L. Nettle-tree, Sugar-berry, Eackberry. M. p. 



339. Dry soil. Spring. 



2. Celtis crassifolia Lam. Eackberry. M. p. 339. Dry soil. Spring. 



■ Bucks— Sellersville (Fr.). Montgomery — Green Lane (Br.). 1 Lancas- 

 ter— (P.). Northampton— (P.). Dauphin^- (P.). 



Family 2. MOBACEAE. Mulberry Family. 



Trees or shrubs ; stipules fugacious. 



Staminate and pistillate flowers spiked; leaves dentate or lobed. 



1. Morus. 

 Staminate .flowers racemose or spiked; pistillate capitate. 



Pistillate perianth deeply 4-cleft ; leaves entire. 2. Toxylon. 

 Pistillate perianth 3-4 toothed; leaves various. 3. Broussonetia. 

 Erect or twining herbs; stipules persistent. 



Twining vines; pistillate flowers in ament-like clusters. 



4. Huniulus. 

 Erect herb; pistillate flowers spicate. 5. Cannabis. 



1. MORUS. 



Leaves rough above, pubescent beneath; fruit purple, spikes 2-6 cm. long. 



, ■.,.', X. M. rubra. 



Leaves smooth and glabrous, or very nearly so, fruit nearly white; spikes 

 1-1.5 cm. long. < 2. M. alba. 



1. Morus rubra L. Bed Mulberry. M. p. 340. Rich woods. Spring. 



2. Morus alba L. White Mulberry. M. p. 340. Spontaneous near houses. 

 , Spring. , 



2. TOXYLON Raf. 

 1. Toxylon pomiferum Raf. Osage orange. M. p. 340. Planted for 

 hedges and occasionally spontaneous. Spring. 



3. BROUSSONETIA L 'Her. 

 1. Broussonetia papyrifera (L.) Vent. Paper Mulberry. M. p. 340. 

 Escaped from cultivation. Spring. 



