n 



• Moiiii- 

 L)tti, iiiid 



S..Iiily -M, 



, Silsuii 10, 



, ir../; 7-'<>, 



I.s4t». 

 Fid. v.). 



lilid. with 

 ic leaves, 

 ous, ;> ti) 



',• typo ii 



t 



ISSlt; Skuin 



Mi(t llH'tlTS, 



LSiJl; Scuttt 



111, ultitudr 



HIS, .Itiiu' 



(Ml 1 : -28.^. 



ofliiliroiis. *^|| 

 ivcs with 

 kod di\ i- 

 s divivh'il 

 me", sti'tii 

 )ur])le and 

 th sevei;d 

 one- iis the 

 h; milt lire 

 ^s, a little 

 ; seed I'aco 



COI'l/rKU AND liOSK— NOIl'I'II AMKKICAX I'M HKLMKKKA K. 7S) 



Tvpe locality. "Montana. Uiidecr Mountains;"" collected by /i;/</- 

 '• /■(/{{■ /A.s'.sv//. no. 4()lf»», ,Iujie l.'>. IM>7: type in Ilerh. Colunihia I'niv., 

 iiiplieate in l'. S. Nat. Ilerl). 



l)iide-er Mountains. Montana. 



.^;/I fliiH 111 I'.idnniii'il : 



^U)Ni'AN\: Type speciiiu'iis as cilcil iiiidcr type Ideality; same stiitioii ami date, 

 liijiUtirii A- r>i:<!<i ij M'vl^^; /■'Idiliiniii >)\)^-i, in ISit7. 

 ^\'(■ c|iiut(' the (ii'i'^'iiial (leseriiitiini of this species, as the material <li)es not permit 

 . ifi (ietermine the ^'eiilis tn which it helniii^s. l''riiitiii^' siiecimeiis nf what appears 

 i,i he tiiis species were ciillected hy Mr. {•"rank 'I'wcedy in the Ui^' Horn .Monntaiiis 

 oi Wyiiiuiiijiin IS'.ili. The Iriiit is dhlniiir, •'! mm. Imi;^', llatteiu-d laterally, the siir- 

 laie slitriitly roujrheiied, ami with iki stylnpedinni. 



15. DEWEYA 'i\)iT. cv:: r,riiy. Fl. l: (541. 1S40. 



Ciilyx teeth prominent. Fruit ohlone-, tlattened laterally, ^dabrous. 

 ('ill-pel with .^ ])r<)minent \-ery acute ril)s. Stylopodium none. Car- 

 pophore di\ided. Oil liilx's se\-erid in the intei-\!il.s and on the c-om- 

 iiiissiirtd side. Seed nearly tei-ete in section, the taco deeply sulciite. 



Caideseent pliints. with simply pinntite leaves, mo.stly no iinolucrc, 

 in\ oliieeis ol' few linciii- l»i-act- 

 lels. and yellow tlowers. 



Type species. /)( //'(■//(/(//•(/uft/ 

 'Wtvv. & (irtiy. 



\ inonotypic e-onus. so t'ar 

 as known, helone-ine- (o tln^ 

 iiioiiiitains of southern CtUi- 

 t'oriiia and Lower ( 'alit'ornia. 



The ircmis Ihirri/n lias heeii re- 

 iVrred til Viliic'i and tn Arrni'itrid^ 

 which twii t:eiiera are new iiierjred 

 under the latter name, hiit differs 

 liiiedy ill its lack ef styliiiiediuin 

 and pinnate leaves. Its relation- 

 >liip is nearest to Tuiisrliia, from 



which it diffi'rs in its very sharp prominent rilis, prominent and persistent calyx 

 teeth, as well as in its ranjjre. I>nide in Kii>;ler i^ rrantl's Xul. I'tiaiiz/inii. has asso- 

 ( iaied Ihiiri/d with ,l/».s77((oy>.s/.s- as suli^eiiera under \'i'l(ii'a, lint it is more clearly dis- 

 tinct from Miisniiojisi.s than from 'i'miscliin. in oiir liir. \. Am. I'liihill. we were led 

 h' a'^sdciate with I), iiiyiiln certain other spi-cies which had heeii descrihed under the 

 irriius, anil which had jjradiially come to stand for it. Acconliii^rly /'. iin/nln came 

 in I.e leL'arded as an exct-ptional species, rather than the type of the jreiuis. \\\' 

 lia\e here maintained Jhuri/d as at lirst estahlislied, and have separateil from it the 

 siihse(|iiently descriheii species us representing a >.'emis more distinct from Ihwcua 

 than is Ihiriifii from Titim'Jwi. 



1. Deweya arguta Torr. & Gray, Fl. 1: ('.41. 1840. 



I.ii/ualieuiii (tri/iilinii Nutt. in Torr. i*i <iray, Fl. 1: (Ul. 1S40. 

 Arraritcin iiri/iila Watson, Hihl. Index 410. 1S7S. 

 Vi'InmimiuUtV. & H. Rev. N. Am. t'mhell. 120. 1.SS8. 

 v. iiniiitii Irniiilit (.', i^ ]{. J'.ot. (iaz. 14: 2SL'. 188'J. 

 5872 



Pig. II.— Di'Wi'Vii nrRUta: a. x t: />, xS. 



Fid. 14. 



