34 University of California Publications in Botany. [VOL. 3 



form of B. mnlti flora Kell. (and both of these are too near to B. 

 longifolia Wats.), differing only in its serrate leaves, scabrous 

 herbage, and more densely pubescent achenes. 



EUPATORIUM GLANDULOSUM HBK. was gathered from the wet 

 bank of a pool in a canon south of Pasadena in 1896 by Mc- 

 Clatchie. Since it has not been found elsewhere in Southern 

 California it is probably an introduction from Mexico. E. Pasa- 

 denense Parish, Zoe v. 75 (1900), was founded on McClatchie's 

 specimens, but one of these has been submitted to Dr. B. L. Rob- 

 inson, who identifies it with E. glandulosum, and writes: "I 

 have compared it very carefully with material from the uplands 

 of Mexico, from Jamaica, and with a photograph which I took 

 of the type in the Paris Herbarium ; also with cultivated speci- 

 mens of E. trapezoideum Kunth, a species which I cannot dis- 

 tinguish from the earlier E. glandulosum. There is a moderate 

 amount of variation in the size, thinness, and degree of glandu- 

 larity of the leaves but the form of the leaves, nature of the 

 pubescence, character of the involucre, corollas, achenes, pappus, 

 etc., are in all respects constant and identical between E. Pasa- 

 denense and E. glandulosum." 



E. SAGGITTATUM Gray, although in Coulter's "California" 

 collection, is not a member of our flora. According to Gray it is 

 Mexican, probably reaching into Arizona. 



TRIBE 2. ASTEREAE. ASTER TRIBE. 



4. GUTIERREZIA Lag. 



Low suffrutescent or herbaceous plants with nearly glabrous 

 but resinous herbage. Leaves narrowly linear, entire, alternate. 

 Heads radiate, very small, numerous, cymose or paniculate at the 

 summit of the stems. Involucre imbricated ; the bracts coriaceous, 

 with green tips. Receptacle in our species flat. Flowers yellow. 

 Achenes angled or striate, pubescent. Pappus of 4 to 15 oblong 

 or narrower commonly erose paleae. 



Heads clavate-oblong : flowers of disk and ray 1 or 2 each 1. G. lucida. 



Heads clavate-oblong: flowers of disk and ray 3 to 7 each 2. G. Sorothrae. 



Heads obovate-turbinate : flowers of disk and ray 7 to 12 each 



3. G. Calif ornica. 



