108 PROCEEDINGS OP THE AMERICAN ACADEMY 



PoROPHYLLUM AMPLEXiCAULE, Engelm. At Parras and Soledad, 

 Coahuila (689). 



PoROPHYLLUM SCOPARTUM, Gray. (P. Greggii, Gray, in part.) 

 At Parras, Saltillo, and Monterey (690 to 694). 



PoROPHYLLUM MACROCEPHALUM, DC. At Soledad (704). 



NicoLLETiA Edwardsii, Gray. At Monclova, Coahuila. 



Dysodia pubescens, Lag. In the Sierra Madre, south of Saltillo 

 (579, 580). 



Dysodia chrysanthemoides, Lag. At Saltillo (695). 



Hymenatherum pentach^tum, DC. {H. Bei-landleri, DC.) 

 Various forms. In "Western Texas (697), and in Coahuila and Nuevo 

 Leon (696, 698, 2084). 



Hymenatherum Wrightii, Gray. At Sutherland Springs (699), 

 and Corpus Christi, Texas (700). 



Hymenatherum gnaphaliopsis, Gray. At Monterey, Nuevo 

 Leon (707). 



Hymenatherum (Aciphyll^a) acerosum, Gray. At Parras 

 (709), and Saltillo (710) ; the latter with an unusual appearance, 

 having rather long primary leaves, and hardly any in axillary fasci- 

 cles. 



Tagetes lucida, Cav. In Coahuila (705, 706). 



CiiRYSACTiNiA Mexicana, Gray. In the Sierra Madre, south of 

 Saltillo (708, 711). 



Pectis prostrata, Cav. At Monclova (640). 



Pectis angustifolia, Torr. At Saltillo and Monclova, Coahuila 

 (701, 702). 



Helenium tenuifolium, Nutt. At Sutherland Springs, Texas 

 (712). — Also var. badium. Gray, veith purplish-brown instead of 

 yellow disk. At Bluffton, Texas (716). First distributed in Hall's 

 Texan collection (364), and recently collected by Reverchon, in South- 

 western Texas, with most of the lower leaves pinnately parted. 



Helenium elegans, DC. {H. microcephalum, var. bicolor, Torr. 

 & Gray.) A form with rays all yellow. At Sutherland Springs, 

 Texas (713). On full comparison this proves to be sufficiently distinct 

 from If. micrncephalum. It has rather smaller and more globose heads 

 and a more hemispherical receptacle, as well as a shorter pappus. 



Helenium amphibolum, Gray. At Parras (714). 523 Parry & 

 Palmer has been wrongly referred to this species. One of our speci- 

 mens is H. Mexicanum, HBK., the other is H. ooclinium. 



Helenium ooclinium, Gray. At Monclova (715). 346 Schaff- 

 ner, from San Luis Potosi, appears to be the same; but if so the 



