1915] Hall: Sue and Noteworthy Californian Plants 171 



2-3 cm. long-is. 8-18 mm. latis: capitnlo solitario, caule.s terminauti : 

 involucre anguste hemisphaerico, 8-10 mm. alto ; sqnami.s exterioribus 

 viridibiis. herbaceis, g'landiilosi.s, e laneeolatis n.sqne ad obovatas varian- 

 tibiis, apice obtiisis vel acutis, cnspidatis; sqnamis interioribns laneeo- 

 latis, attennatis, rubescentibus, margine minute fimbriatis : radii flori- 

 bus 15-20, femineis; ligulis flavis. ca. 8 mm. longis: disci floribus 

 numerosis, hermaphroditis; corollis anguste infundibuliformibus. gla- 

 bris, ca. 7 mm. longis, profunde 5-dentatis; styli ramis tantum ultra 

 partem stigmosam pubescentibus ; stigmatis appendicibus obtusis, ad 

 partem stigmosam subaeqnalibus : achaeniis eylindrico-fusiformibus, 

 dense adpresso-pubescentibus, 4 mm. longis: pappi setis mollibus, 

 scabridis, sordidis, ca. 8 mm. longis. 



Crevices of granitic rocks at an altitude of 2680 meters on a peak 1 kilo- 

 meter s.s.w. of Angora Peak, El Dorado County, California, July, 1910, Geo. 

 E. Hall (Herb. Univ. Calif, no. 180321), type. Found also on the north side 

 of Ealston Peak, El Dorado County, at 2800 m. alt., July 30, 1910, by the same 

 collector, and gathered on Ralston Peak in 1912 by Miss Helen D. Geis, no. IS. 

 These stations are both in the Hudsonian Zone and lie in the Tahoe district 

 of the Sierra Nevada Mountains. 



The afifinities of this species are undoubtedly with //. pugmanis 

 (T. & G.) Gray and //. LyalUi Gray, from both of which it differs 

 in its deeply toothed leaves, more foliaceous involucral bracts, and other 

 characters. In habit and pubescence it closely simulates Macronema 

 aherrans Nelson, but differs in the outer foliaceous bracts of the in- 

 volucre (not to be confused with the uppermost leaves of M. aherrans) , 

 in the radiate heads, and in the broader style-branches. 



Although the affinities of //. e.ritnus are quite clear, there is oppor- 

 tunity for much difference of opinion as to the genus to which this 

 proposed species and its relatives .should be referred. H. pijgmaeus 

 was first described as a Ste)iotHS,- was later transferred to Haplo- 

 pappus:' and was considered by Greene (perhaps through a misconcep- 

 tion as to the style-branches) to be a Macronema. II. Li/allil, originally 

 described as a Ilaplopappus* was once referred to Piirroconia by 

 Rydberg,'' l)ut is now accepted by this same author as a species of 

 TonestusS' a genus recently proposed by Nelson" to accommodate these 

 two species and Ilaplopappus tdccratus Henderson.'* all of which 



2 Torrey and Cray, Flora of North America, 2, 237 (1842). 



3 Gray, Am. Jonrn. Sci., ser. 2, 33, 239 (1862). 

 ■»Cray, Proc. Phila. Acad, for 1863, 64 (1863). 



■"- Rydberg, Mem. N. Y. Bot. Gard., 1, 382 (1900). 



« Rydberg, Fl. Colorado, 34o (1906). 



- Nelson, Bot. Gaz., 37, 262 (1904). 



s Henderson, Bull. Torr. Chib, 27, 347 (1900). 



