I 



FLOKA OF THE DISTRICT OF COLUMBIA. Ill 



62. Carex virescens Muhl. 



Damp woods of the Piedmont Region. May-July. Eastern U. S. {C. costellata 

 Britton.) 

 53. Carex caroliuiana Schwein. 



Meadows; mostly in the Coastal Plain. May-June. Southeaetern U. S., north 

 to N. J. (C. triceps smitkii Porter.) 



64. Carex complanata Torr. 



Woods and meadows. May-June. Eastern U. S. (C triceps Michx.; C. triceps 

 hirsula Bailey.) 



65. Carex bushii Mackenzie. 



Thickets and fields throughout; not common. May-July. R. I. to S. C. and 

 Okla. (C. triceps cuspidata Dewey.) 



The bristly, usually stiffly erect spikes distinguish this species from its allies. 

 56. Carex debilis Michx. 



Swampy places; mostly in the Coastal Plain. June. Southeastern U. S. 



Carex debilis pubera A. Gray was collected by Steele in a "swampy place, 1 mile 

 east of Kenilworth, May 14, 1898." 



67. Carex oblita Steud. 



Swamps and bogs of the Coastal Plain. May-June. Eastern U. S. (C. venusta 

 - minor Boeckl.) 



68. Carex gracillima Schwein. 



Woods; mostly if not entirely confined to the Piedmont Region. May-Jime. 

 Northeastern U. S. 



69. Carex prasina Wahl. 



Rich or wet woods; mostly above the fall line. May. Northeastern U. S. (C 

 miliacea Muhl.) 



60. Carex davisii Schwein. & Torr. 



Collected but once, "among rocks at Great Falls, Md., June 2, 1905, Theodor 

 Holm." Mississippi Valley; infrequent eastward. 



61. Carex tetanica Schkuhr. 



Woods; throughout. May-June. Northeastern U. S., south to D. C. (Including 

 C. tetanica ivoodii of Ward's Flora.) 



62. Carex oligocarpa Schkuhr. 



Woods; Plummers Island; Glen Echo; Seven Locks. May-June. Northeastern 

 U. S. 



63. Carex hitchcockiana Dewey. 



Rich woods; above the fall line. May-June. Northeastern U. S. 



64. Carex glaucodea Tuckerm. 



Apparently confined to the Coastal Plain. May-June. Northeastern U. S. 



65. Carex amphibola Steud. 



Drj' soil. May-June. Eastern U. S. (C. grisea angustifolia Boott.) 



66. Carex grisea Wahl. 



Rich woods. May-June. Eastern U. S., south to N. C. 



67. Carex oareyana Torr. 



Woods; Seven Locks; near Langley; rare. May. N. Y. to Mich, and D. C. 



68. Carex platyphylla Carey. 



Woods; apparently confined to the Piedmont Region. May. Me. to 111. and Va. 



69. Carex abscondita Mackenzie. 



Moist woods; Beltsville; Riverdale. May-June. Easters U. S. (C. ptychocarpa 

 Steud.) 



70. Carex digitalis AVilld. 



Woods and thickets; essentially a plant of the Piedmont Region, though specimens 

 have been collected at Dyke. May-June. Eastern U. S. 



