io Muhlenbergia, Volume 4 



proximity. The flowers are inconspicuous aud of a much paler 

 hue than those of T. gracilentum. The calyx teeth are more 

 slender, as long and sometimes much longer than the flowers. 

 A critical examination of the sheets of T. gracilentum shows 

 that there is a variation within the species from prominent dark 

 purple, white tipped flowers, which are twice the length of the 

 calyx, to very pale purple or greenish-white flowers barely the 

 length of the calyx. 



California 



Specimens examined — Los Angeles county. Pasadena, Join s 

 3218. 



San Bernardino county. San Bernardino Valley, Parish 

 5220, 5628; Kennedy, April 24, 1907. 



T. gracilentum var. exile (Greene) 



T. exile Greene, Pittonia 1: 6. 1886. 



Type locality, island of Santa Cruz, California, Greene, July 

 and August, 1886. 



An examination of Doctor Greene's material while in Wash- 

 ington inclined me to believe that T. exile was not entitled to 

 specific rank. It is too near a depauperate form of T. gracilen- 

 tum. The original description of the latter calls for a one-seeded 

 pod, but we know, however, th.it it is more frequently two than 

 one-seeded. '/'. exile has a two-seeded pod. 



A specimen in the Brandegee Herbarium, University of 

 California, named T. exi/e, collected by T. S. Brandegee on 

 Santa Cruz Island in [888, is certainly /'. gracilentum. 



Orcutt's no. 1004 from Tia Juana, Lower California, men- 

 tioned by Fernald in the original description of T. gracilentum 

 var. inconspicuum seems to be intermediate between that variety 

 and var. < 1 lit . The variety exile may be distinguished by the mi- 

 nuteness of the plant, the small wedge shaped leaves with 

 markedly dentate spinulose margins, and the inconspicuous flow- 

 ers. 



T. Palmeri S. Wats. proc. Am. Acad. 1 Is [32. [876. 



Thi is extremely interesting on account of its leaves. 



