December 31, 1906 215 



Trif'ouum imxANTHUM Greene, ined. 



No. 8145, collected April 11, in Madera county along the 

 San Joaquin river at the old bridge above Pollasky, growing in 

 damp ground near pools. 



Trifouum aciculare Nutt. 



No. 8134, collected April 11, on grassy slopes 'in Madera 

 county near the San Joaquin river about three miles above Pol- 

 lasky, where it is plentiful. Determined by Professor Greene, 



Trifouum arizonicum Greene, Erythea, 3: 18. 1895. 



No. 8307, collected May 22, in Silver canyon in the White 

 mountains opposite Laws, Inyo county, growing in wet ground 

 along a small stream. Far removed from the original .station, 

 "near Flagstaff, northern Arizona." Determined by Professor 

 Greene. Since in" the original diagnosis the floral characters are 

 passed over lightly, the following drawn from living plants may 

 be added: 



Involucre narrow, composed of unequal spinulose lobes, the 

 longest about 5 mm.: calyx 5 mm. long, faintly lo-nerved, the 

 tube membranous, equaling the teeth, these subulate-attenuate, 

 green, pointed with red: corollas i cm. long, the tube pale, the 

 lower part of the petals lined and dotted with pale red, the up- 

 per parts w'hitish; banner standing away at an angle of about 

 45 degrees, oblong, 3 mm. wide, a little narrowed at the toothed 

 apex, nearly plane; wings erect, oblong, narrow, about r mm. 

 wide, 4 mm. long; keel 2 mm. long and about as deep for nearly 

 its entire length, the dorsal side a Tittle contracted at base and 

 apex, the latter with a minute straight point, 



Trifolium rusbyi Greene, Pittonia, 1: 5. 1887. 



No. 8314, collected May 23, in the Sierra foothills west of 

 Bishop, Inyo county, iu grassy places on the banks of Kirch 

 creek; not plentiful. The flowers of tTie original, collected in 

 "northern Arizona," are "salmon-color, distinctly pedicelled." 

 Ours are pale violet purple, scarcely pedicelled. Determined by 

 Professor Greene as probably belonging here. 



