110 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



33. Carex hormathodes Femald. 



Specimens approaching the variety richii Fernald have been collected near Great 

 Falls. May-June. Eastern U. S. 



34. Carex crinita Lam. 



Swamps, ditches, and wet places. June-Aug. Eastern U. S. 



35. Carex gynandra Schwein. 



Along streams, swamps, and wet places; apparently mostly confined to the Coastal 

 Plain. Late May-Aug. Northeastern IT. S. and along the mountains to Ga. (C. 

 crinit a gynandra Schwein. & Torr.) 



36. Carex torta BootT. 



Alons* streams throughout; apparently rare and local . May-June. Northeastern U.S. 



37. Carex stricta Lam. 



Along the Potomac and E .stern Branch. May-June. Northeastern U. S. (C an- 

 gustata of Ward's Flora.) 



38. Carex emoryi Dewey. 



Shores of the Potomac and its larger tributaries in the Coastal Plain. May- June. 

 Northeastern and central U. S. (C stricta angustata of Steele's list.) 



39. Carex aquatilis Wahl. 



Shores of the Potomac and Eastern Branch. May- July. Noftheastern U. S. (C. 

 saxatilis of Brereton's Prodromus is probably this species.) 



C. goodenovii Gay (as C. vulgaris Fries) is reported in Ward's Flora, but there are 

 no specimens at hand. 



40. Carex leptalea Wahl. 



Bogs and swamps throughout, usually in sphagnum. June-Aug. Northern U. S. 

 (C. polytrichoides Muhl. ) 



41. Carex willdenovii Schkuhr. 



Usually in dry woods. May-July. Eastern U. S. 



42. Carex jamesii Schwein. 



Woods.; apparently confined to the Piedmont Region. Apr.-July. Northeastern 

 U.S. {C.steudeliiKnnth.) 



43. Carex nigromarginata Schwein. 



Plummers Island; High Island; Linnean Hill. Apr .-May. Northeastern U. S. 



44. Carex tonsa (Fernald) Bicknell. 



Dry hills. May-July. Northeastern U. S. (C. umbcllata ionsa Fernald ; C. umbellata 

 of Ward's Flora.) 



45. Carex communis Bailey . 



On rocks of Potomac shore above the fall line. May-June. Northeastern U. S. (C. 

 pedicellata Britton.) 



46. Carex emmonsii Dewey. 



Common on dry hills and among rocks. May. Eastern U. S. (C. varia Muhl., not 

 Lumnitz.) 



47. Carex pennsylvanica Lam. 



Common in dry soil. May. Northeastern U. S. 



48. Carex hirtifolia Mackenzie. 



Rich woods of the Piedmont Region. May-June. Northeastern U. S. (C. 

 pubcsccns Muhl.) 



49. Carex pallescens L. 



Woods; Anacostia and near St. Elizabeths. May-Aug. Northeastern U. S. 

 (Including C. pallescens undulala A. Gray.) 

 60. Carex shortiana Dewey. 



Meadows and low woods. May-July. Northeastern U. S., south to D. C. 

 51. Carex swanii (Fernald) Mackenzie. 



Dry woods; apparently confined to the Coastal Plain. Middle of May to middle of 

 June. Northeastern U. S. (C. virescens swanii Fernald; C. virescens elliptica of 

 Ward's Flora.) 



