76 



spreading in a stellate manner ; perigynium narrow, often almost 

 linear-lanceolate, brown-nerved, sharp-edged and rough above. 



Oregon : Portland, lIcnderso7i, Sauvies' Island and North Yam- 

 hill, Howell ; Falcon valley, Washington, Suksdorf; Vancouver 

 Island, Macoiiu. 



Carex VIRESCENS, Muhl. 



Muhlenberg 



the small form of this plant, which 

 grows upon dry and sterile soil. The large form appears to- be 

 worth recognition : 



Van COST ATA, Dewey, Sill Journ. (I), ix. 260 (1825). 



C. costata, Schw. Ann. N. Y. Lye. Nat. His. i. 6^ (1824), 



V. s. Hb. Schw. 

 C. virescenSy van elliptica^ Olney, Exsicc. fasc. iii. No. 21 



(1872), v. s. 

 Tall, i^ to 2^ ft high, the leaves very numerous and long; 

 spikes ranging from }4 or }^ in. to nearly 2 in. long; perigynium 

 more strongly ribbed than in the type. Evidently more common 

 than the type. 



CaREX GRACILLIMA X niRSUTA. 



C. hirsiita^ van pedtinctdata, Schw, & Torn Monogr. 323 



(1825), V. s, Hb. Barratt. 

 The plant has much the look of a slender C, gracillima with 



r 



erect spikes, although it lacks the green color of the spikes of that 

 species, and the perigynia are short and costate, like those of C. 

 triceps^ van hirstita, Bailey. Under a good magnifier the leaves 

 disclose a little pubescence, and the perigynia show a tendency 

 to roughness. Schweinitz and Torrey write as follows: "Spiculis 

 oblongo-cylindricis, pedunculatis; foliis vix pubescentibus. 

 This plant might be taken for a distinct species, were it not care- 

 fully examined In a living state. Its spikelets are three-fourths of 

 an inch long, slender, and supported by peduncles half an Inch in 

 length." " In meadows, growing with C. digitalis [61 gracillima^ 

 Schw.] and the ordinary variety of C, liirsiita. Philipstown [Put- 

 nam Co.], Highlands of New York; rare, Dr. BarrattT Not 

 since collected. 



BarRATT's Carices.— In 1840 Dn Joseph Barratt prepared 

 to publish a set of ** North American Carices.". The sets appear 



* # 



