28 I<EAFI,ETS. 



I/ESSiNGiA MiCRADENiA. Slender, 2 feet high or less, rather 

 diffusely corymbose-paniculate from below the middle : low- 

 est leaves oblanceolate, petiolate, serrate-toothed, upper and 

 rameal oblong and oval, sessile, entire, both faces of all floccose- 

 tomentose ; slender pedunculif orm monocephalous branchlets 

 with many minute erect bracts, these and the involucres 

 densely stipitate-glandular : heads small and few-flowered ; 

 bracts rather few and not strongly imbricated, their tips not 

 very acute and none squarrose : corollas purple. 



Mt. Tamalpais, and elsewhere among hills of Marin Co.; 

 type in my herbarium, heretofore mistaken for L. ramulosa. 



LESSINGia bicolor. Branched loosely from the base, the 

 branches few, rather slender, purplish, minutely puberulent 

 and stipitate-glandular : basal leaves oblong-lanceolate, acute ; 

 cauline oblong-ovate, acute, sessile and cordate-clasping, all 

 white-tomentose above, green and scaberulous beneath, the 

 margins beset with a few stipitate-glands : heads few and broad, 

 each at the end of a slender branchlet, campanulate, the inner 

 bracts purple, the outer green, some tomentose, all more or 

 less glandular : corollas small, deep-purple. 



Santa Rosa, Sonoma Co., 18 Aug. 1902, A. A. Heller ; dis- 

 tributed under the name L. ramulosa, but in truth a very 

 different plant of quite remarkable characters. 



I/ESSiNGiA Mendocina. More than a foot high, simple up 

 the middle, there parted into several long slender widely spread- 

 ing branches bearing many wiry but almost filiform flowering 

 twigs, these copiously bracteate below, floriferous only at or 

 very near their ends : basal leaves unknown ; cauline ovate- 

 lanceolate, acute, spreading, floccose-woolly on both faces : 

 involucres small, turbinate, many-bracted and closely imbri- 

 cated, the bracts tomentulose below, the erect purple tips 

 bearing each a conspicuous but small gland at the very summit : 

 corollas small, deep-purple : pappus of rather firm bristles 

 about equalling the silky achene. 



Near Mendocino, Mendocino Co., Aug. 1898, H. E. Brown ; 

 in U. S. Herb, under collector's number 940. 



