﻿COMPOSITE. 



equally serrate with appressed teeth; heads loosely corymbose ; rays 8-12, 

 much longer than the disk.— Linn. spec. 2. p. 898 ; Fl. Dan. t. 643 ; Engl, 

 lot. t. 757 ; Purshfi. 2. p. 552. Ptarmica vulgaris, DC.prodr. 6. p. 23. 



with. Introduced in Danvers, Massachusetts, Dr. Nkholls >\Mr. Oakes.) 

 Aug.-Sept.— Disk and ray while.— Sneeze-wort. 



2. A. multijlora (Hook.) : clothed with villous hairs when young ; leaves 

 elongated, linear-lanceolate, closely and sharply pinnatifid-serrate ; the teeth 

 or segments lanceolate, mucronate, serrulate, somewhat appressed ; heads 

 in dense compound corymbs ; rays 10-12, very short.— Hook. ! fl,. Bor.-Am. 



318. A. Ptarmica, Richards. '. appx. Frankl. joum. ed. 2. p. 33.^^ 



Richardson! Drummond .'—heaves evenly and deeply pectinate-incised! 

 Ligules roundish, scarcely exceeding the disk; in which respect it differs 



3. A. horealis (Bongard) : stem striate, villous with soft hairs ; leaves ses- 

 sile, pinnately divided ; the segments bipinnatifid ; the lobes linear, acute, 

 pubescent; heads corymbose; the peduncles viUous-pubcscent, branched: 

 exterior scales of the involucre rather obtuse, the inner oblong ; rays obovate, 

 entire, 4-nerved. DC.—Bonqard, veg. Sitcha, in mem. acad. St. Petersb. 

 I- c. p. 149. Ptarmica boreaUs, DC prodr. 6. p. 21. 



Sitcha, Kastahky, ex Bongard.— The heads are compared with those of 

 A. atrata. Flowers white. 



parted ; the lobes linear, 3-5-cleft, mucronate ; the rachis entire or slightly 

 toothed near the apex of the leaf; corymb compound, fastigiate ; rays 4-5, 

 obovate, white, or sometimes rose-color (var. rosea).— Linn, spec p. 899 ; 

 Fl. Dan. t. 737 ; Engl. bot. t. 758 ; Hook. ! fl. Bor.-Am. 1. p. 318 ; Dar- 

 ^^gJ-f fl.^Cesl. p. 489 ,• DC. prodr. 6. p. 24. A. grac^ile^&^A. occidenmle, 



leaves slender and loose, to densely woolly, with smaller and narrower leaves, 

 and the divisions and lobes short and very much crowded; which is A. Mille- 

 folium y. lanata, Kock : A. tomentosa, Pursh ^ fl. 2. p. 319 (Interior of 

 Oregon, Lewis !) : A. lanulosa, Nutt. ! in jour. acad. Philad. 7. p. 20 : & 



ThrougLm^NSth ArTer^ilr^^^^ along the Rocky 



Mountains! to Mexico, and from Newfoundland! to Oregon! Sitcha, and 

 California, Also, doubtless introduced from Europe into pastures, (fee. Aug.- 



