NEW OK NDIEWOBTHY SPECIES, 79 



yellow:' beak of the achene veiy much attenuate, longer thnii 

 the body ; pappus fragile and deciduous. 



Mouutaius of Arizona and New Mexico ; apparently referred 

 by Dr. Gray to his T. glaucnnu vnr. lacinkdum^ but the pecul- 

 iarities of its involucre, achenes and pappus must undoubtedly 

 exclude it from that species. It is more like T. pnrpiireum^ 

 yet with floral characters of quite another order. 



TuoxiMON PLEBEIUM. Near T. grandiforuw, but the lance- 

 olate leaves with a slender acumination and fewer teeth or 

 lobes : heads very large and many-flowered, but ligules very 

 short, suberect, deep yellow: achenes very small (iu pro- 

 portion to the size of the head, and of the whole plant), taper- 

 ing abruptly to the long filiform stipe of the pappus. 



Abundant in open grassy x>haces along all the western side 

 of the :\It. Diablo and Coast llanges in middle California. 

 ^vhere it is known locally as '* T. gramlijhnnv,"' and whence 

 it was distributed by the writer six or seven years ago to 

 ttiany correspondents, under that name. It is a very distinct 

 species, ea.silv recognizable as such, by its altogether incon-- 

 spicnous flowers. The expanded head is less than an meli 

 broad, the short ligules scarcely or not at all spreading, and 

 almost concealed by the large bracts of the involucre. I long 

 ago communicated to Asa Grav an account of these, and I 



fc,' 



perceive that the character "ligules short" ascribed to T. 

 Omndijlornm in the Synoptical Flora, was takeu on my 

 authority, both of us thus confusing two quite different plants. 

 In true grandljlornm, common in the interior of California, 

 and thence northward to the British boundary, the ligules are 

 so long that the expanded heads measure two inches across, 

 and even more. The achenes in this are exactly fusiform, 

 and twice as large as in the homely T. X)lchcium. 



Do^VNiNGiA TRICOLOR. Branches few, a span loug, weali, 

 tortuous and reclining : flowers few, upper lip of corolla very 

 SQiall, of two segments which are erect or slightly curved 

 backward, but parallel ; lower lip parted to below the middle 



