50 CYPERACEAE 



14. Bleocharis rOBtellata Torn Beaked SpikE-RUSH. (Man. p. 171; 

 I. F./. spS-) I" ■wet places, Vt. to B. C, Fla., Mex. and Cah— Pennsyl- 

 vania : Crawford. 



7. FIMBRISTYLIS Vahl. 



Style-branches or stigmas 2 : achenes lenticular. 



Spikelets peduncled and forming umbels, or solitary and sessile. 



I. J^. lax a. 



Spikelets several, sessile, forming a terminal head. 2. F. Vahlii. 



Style-branches or stigmas 3 : achenes 3-angled. 3. F. autumtialis. 



1. nmbiistylis laxa Vahl. Weak Fimbristyws. (Man. p. 174 ; I. 

 P. /. 606.) In moist soil. Pa. to Fla., west to 111., Mo. and Tex. Also in 

 tropical Am. — Pennsylvania : CHESTER ; Phii<adei,phia ; IvAncasTER. 



2. Fimbilstylis Vahlii (Lam.) Link. Vahi<'s Fimbristylis. (Man. 

 p. 174 ; I. F. f. 607.) In moist soil. Mo. to Tex., east to N. C. and Fla. 

 Also about the eastern cities. — Pennsylvania : CHESTER ; Phuadei,- 

 PHiA ; Lancaster. 



3. Fimbristylis autumnalis (L. ) R. & S. Slender Fimbristylis. 

 (Man. p. 174 ; I. P. /. 608.) In moist soil. Me. to Mich., Fla. and La. 

 Also in tropical Am. — Pennsylvania : CHESTER ; Northampton ; Lan- 

 caster ; York ; Dauphin ; Erie ; Montour ; Huntingdon ; Erie. 



8. STENOPHYLLUS Raf. 



1. Stenopbyllus capillails (L. ) Britton. Hair-i,ikE Stenophyllus. 

 (Man. p. 173 ; I. F. f. 6oj.) In dry or moist soil, throughout N. A., ex- 

 cept the extreme north. Also in tropical Am. — Pennsylvania : North- 

 ampton ; Delaware ; Lancaster ; Huntingdon ; Erie ; Mont- 

 gomery ; Philadelphia ; York ; Chester. 



9. CLADIUM P. Br. 

 1. Cladium mariscoides (Muhl.) Torr. TwiG-rush. (Man. p. 186; 

 I. F. /. 661.) In marshes, N. S. to Minn., Fla. and Iowa. — Pennsyl- 

 vania : Carbon ; Lancaster ; Erie ; Clinton. 



10. RYNCHOSPORA Vahl. 

 Perianth-bristles downwardly barbed. 

 Scales white or whitish : perianth-bristles g-15. 1. R. alba. 



Scales brown : perianth-bristles 6. 

 Leaves with filiform blades : achenes oblong. 2. R. capilldcea. 



Leaves with narrowly linear flat blades: achenes obovate. 3. R. glomerata. 

 Perianth-bristles upwardly barbed. 4. R. cymosa. 



1. Rynchospora alba (L.) Vahl. White BeakED-rush. (Man. p. 

 185 ; L F. /. 45/.) In bo^s, Newf. to Alaska, Fla., Ky., Minn, and Ore. 

 Also in Eu. and Ksia..— Pennsylvania : Monroe ; Lancaster ; Craw- 

 EORD ; Erie ; Montgomery ; Philadelphia ; Lackawanna ; Pike ; 

 Delaware. 



2. Rynchospora capillacea Torr. Capillary Beaked-rush. (Man. 

 p. 185 ; I. F./. 6s2.) In bogs, Va. to Minn., N. J. and Va..— Pennsyl- 

 vania : Lancaster ; Erie. 



