20 



COMPOSITE. [Diplopappus 



15. E,? hy ssopif alius ; cauleramis sterilibus paulculato paucis in pedunculos nudos uni- 

 floros protractfs, foliis linearibus integris glabellis ciliatis, radiisinvolucro cylindraceo multo 

 longioribus. Mich, Am. v. 2. p, 123. Furshy FL Am. v, 2. p. 534? 



Hab. Hudson's Bay and near Lake Mistassins. Michaux. — With this I am unacquainted. In some of its 

 characters, it comes near my E. loncJiophyllus, hut the involucre is said to be cylindrical, and the rays much 

 longer than it. Pursh refers it to DHL Elth. U 306, f, 394, {E, Carolinianusy Willd.) evidently no true 

 Erigeron, the Phalacroloma of Cassini. ^ 



16. E, Cfzw(7c^e«525; caulehispido, foliis lanceolato-linearibusciliatisacutis, floribus (parvis) 

 in paniculam terminalem oblongam foliosam dispositis, ramis quasi racemoso-multifloris, 

 pedicellis foliolosis, radiis minutis (albis) pappocopiosovix longioribus. — Linn. — Mich, Am. 

 V. 2, p. 123. Fursh, Fl. Am. v. 2. p, 534, 



Hab. Thouffhout Canada. From Lake Huron to the Saskatchawan. Columbia River. Dr. Scouler. 



17. E, ?JIoriJer; caule breviusculo ramoso piloso, foliis omnibus lineari-spathulatis pilosius- 

 culis integerrimis glaucis, ramis pedunculiformibus unifloris (floribus inter maximos), involu- 

 cri foliolis exterioribus pubescenti-liirsutis interioribus membranaceis fimbriato-ciliatis, radiis 

 latiusculis (albis?) patentibus iuvolucro duplo longioribus, pappi pilis albissimis incrassatis 

 hirsutulis. 



Hab. Dry rocks and sandy grounds near Priest's Rapids of the Columbia, and Lewis and Clarke's River ; 

 N,W. coast of America. Douglas. — This is evidently no Erigeroriy yet it has as little affinity with any Aster. 

 The hairs of the pappus are unusually thick and white. 



{Fappus duplex: extus perhrevis suhpaleaceus.) 



18. E. annuus; foliis radicalibus subrotundo-ovatis profunde dentatis pctiolatisj caulinis 

 lanceolatis acutis medio subserratis, corymbo terminali, — Aster annuus. Linn. — Erigeron 

 hcteropliyllus. Willd. Sp. FL v. 3. p. 1956. Pursh, FL Am. v. 2. p. 534.— Diplopappus 

 dubius. Cass. Bull. — Stenactis dubia. Cass, in Diet des Sc. Nat v. 37. p. 485. — S. annuus. 

 Nees., Ast p. 273. , 



Hab. Canada. C/t-^Aorw.— Except in the pappus, this is so entirely an Erigeron that I am very unwilling to 

 separate it from that Genus. The outer pappus consists of several very minute acuminated paleaceous scales. 

 It has, like the E. Canadensis^ been introduced from America into Europe, and thus found a place in our 

 European Floras, 



60. DIPLOPAPPUS.* Cass. 



Radius uniserialis $ . Discus $ . Pappus biserialis. Cor. disci regularis. Achenium 

 erostre.— Herbae vel fruticuU Americani, Asiatici vel Africani ; foliis aUernis, integris ; capi- 

 tulis tPTininaUhus solitariis, colore varie tinctis. Less. 



t 



