nil 



ISC) CUNTUIIUITIONS KUOM TIIK NATI<»N.\I- 11 KUMAKI I'M. 



Low (Irv iiToiiiMl Lilahcoiis pliinls, with Iciivcs aiui immIiiiicIcs in -,\ 

 cliislci" at (Ik- simmiil of a sli(»r( slcndrr siciii (mon' or less siiltlma 

 iicaii) ai'isinu' I'roin :i nci'v (hick clonoalcd rool. once or (wicc pinriali 

 thick or coriact'ous leaves with liroad sfoincnls. no in\ olucrt'. itu'olu 

 eels ot" rather e«»ns|)ictioii> Id'act h'ts. and white lloweis. Name Irom 

 I'jtuso^, ii'i-iiihli <l. and Trn-fjnf, ir/'/it/. 



Type sjM'cies. /i/n/.snj)/, /■ii.'< ji/itf/Jii;/i'.t ('. »SL l{. 



A e'eniis(d' ;! species. I»eh)iiu"iii<i" to the arid ren-ions of I'tah. Ne\ad:i. 

 and eastei'ii ( )l'ee(»n. 



'{"he L'cims rfsciiililcs < 'iiiim/ili rus, ainI cspcciiilly ( '. m nh, rri/i \i\ li:il)it. luit \\i\- ;i 

 MTV (liffciTiil I'niit, which iiiost cluscly rcseinhlcs lli:it ni ' h-i u.il.-<, hiil ihc l;iltcr li;i~ 

 >liiii|M'r lihs, tliit-l'iiccil ciii'itcls, iiinl very ilitTd'ciit l'<iMa).'i' iiinl haltiliit. 

 I'liiiiMiy Iciil ili\ isioiis .'{, terminal IniL'cst, liiliTiils clec|(ly •J-lnhcd. 



I iiihcis Severn I, I'lprniin;.' ii cniniiiicl cliister I . I,', /ilni ijniin. , 



I'liihi'ls iisiiiill>' sdiiiiiry -. /.'. jiiihsii. 



I'riinmy leal' ili\ isidns .'>. hiisal ]>air laiyesl and iiiniialely •"> tn o-clrl'l . . .".. It. ciirriiiiulii.. 



I. Rhysopterus plurijugusC. tV: K.. sp. no\. Kki. Ti.'.. 



licaves eoi'iaceoiis. -J to '■'> <in. lone', on vei-y shoi't petioh's. with 



l>roadly ol)hirie- or o\ate atal olttiise otitliia': h-alhts :;. llie Iater:il> 



deeply :i-lol)e(|. the terminal one niiich 

 iare'ei' and usually .",dol»e(|. all the lolie-. 

 somewhat clet't and coarsely erenale 

 HUM 're mate- toot lied: |)e(l uncles shoiti r 

 than the leaves; iuul»e|s several, t'oriiiinL;' 

 a compact cluster, with inv (»luc(dsot' ovale 

 acunnnate hractlels distinct neai'ly to the 

 hase; rays vei-y stout. S to 1(> umi. lont:'; 



fruitine- pedicels 1 to ."1 nun. lone-, shorter than those of the sterile 



flowers: fruit 'A mm. lone-, an a<'cessory pair of coi'ky I'iltson tliecoimni>- 



sui'al side of the laterals, eixine- the appearance of a T-ribhed carpel. 

 Type locality. Malheur X'alley. near Harper ranch, Oree-on. altituiie 



1.000 meters: collected hy Lr/7>r/y. no. 2:>4o. June lO, LSIX;; type in 



r. S. Nat. Hcrl). 



Oidy known fi'om the t\ i)e locality. 



«S'/;( fiiiii iiK I rdiiiliii ff: 



< )i{i:(;(in: Tyiie specimen as citeil mider tyjie Incality. 



'2. Rhysopterus jonesii ('. cVl: li.. s)>. no\ . 



Kesemhline- A', iihirijitijus. hut leaves somewhat llcshy. with loneiT 

 petioles, and the teeth not nuu-ionate: umhels solitary and on lonuer 

 peduncles. 



Tyjje locality, dual). I'tah, altitud(> l.i^oo meters; collected by -/"//'.v, 

 no. Itlltl. April .'JO. 1S80; type in V . S. Nat. Herb. 



Only known from the type locality. 



tSpeciiiiciix ecu III i 1(1(1: 



Utah: Type Hpecinuni aw cited iiiidei' tyiie ideality. 



Flu. 55.— Kli.vwiiiliTiis iiliiriju^'Ms: 

 i(, ,\ I'l-. h, A N. 



