OF ARTS AND SCIENCES : MAY 13,' 1873. 653 



1867, received from Dr. Parry. Habit of F. spathulata, proliferously 

 diehotoinous ; the branches filiform and becoming glabrous. Heads 

 numerous in the capituliform clusters, a line and a half long. Fructif- 

 erous palese almost as deeply saccate as in F. Californica. 



Anaphalis margaritacea. We prefer the reference of Gnapha- 

 lium margaritaceum Linn, to this genus (standing between Antennaria 

 and Gnaphalium), rather than to Antennaria by Brown, or to Heli- 

 chrysum by Weddell. No. 300 of E. Hall's Oregon collection, inadver- 

 tently named Gnaphalium leucocephalum Gray, is a narrow-leaved form 

 of our common Everlasting. 



Pterigopappus Hook, f. Although Maia of Weddell is referred 

 to this genus in the Genera Plantarum, only the original Tasmauian 

 species is mentioned. P. compactus from the Andes of New Grenada 

 is the second species of this singularly distributed genus. 



Adenocaulon Hook. Benthara refers this genus to his Millerieos 

 in the tribe Helianthoidece, with evident misgiving, remarking in his 

 Notes on the order that it is a less perfect stranger there than by the 

 side of Tussilago. That is true enough ; but the wholly alternate 

 leaves and naked receptacle are out of place there, and there is nothing 

 but the sterile central flowers which favors the association. Upon a 

 study of our species for the Californian flora, I find that its anthers, 

 instead of " basi integral vel vix minute bidentatge," are strongly sagit- 

 tate, in the manner of Bentham's diagram, no. 6, except that the five 

 points of the auricles are obtuse, although quite as much produced. 

 The style being conformable, it is clear to me that the genus should be 

 transferred to the Inuloidece, where, from its peculiarities of fruit, 

 involucre, and corolla, it may form a subtribe, Adenocauloneee. 



Ambrosia artemislefolia, etc. In his notes on Composite, and 

 more briefly in Genera Plantarum, Bentham has cited an observation 

 of Meehan, that in this plant " the inflexed setiform appendage is only 

 to be found on anthers which do not present perfect pollen ; the 

 abundantly polleniferous anthers are broad, without horns." I find 

 this appendage equally surmounting anthers that have been filled with 

 pollen, and those that are so filled, only in the latter they are not so 

 readily discerned. I have never seen any normal staminate heads 

 with non-polleniferous anthers. 



Silphiu.ai gracile. Scabro-hispidulum ; caule gracili striato 

 1 -2-pedali mono-tricephalo subscapiformi ; foliis radicalibus imisque' 

 caulinis ovato-oblongis membranaceis denticulatis utrinque acutis vel 



