64 CONTRIBUTIONS TO WESTERN BOTANY NO. 15 



acter of tKe pod is draboid and not thysanocarpoid. The flowers are 

 those of Dl-aba, the cuneifolia rectfon, while the habit is also. Draba 

 yerna has a decided tendency to drooping pedicels (at the tip). There 

 IS no other Draba e^xcept the so-called S. reflexa of Greene, but that 

 species IS doubtless a form of the aurea group with widely spreading 

 pedicels which occasionally are a trifle reflexed. 



Taking the species of Draba there seems to be endless confusion 

 by the ovcr-cmphasis by the splitters of trivial characters used by Rob- 

 inson. Taking the little Drabas (Drabella) with white flowers Rob- 

 mson ho.ds D. Caroliniana distinct from cuneifolia on the shortened 

 lloral rachis, a tru-ial character certainly, but in the mountains of Utah 

 his Jails down Taking up the cuneifolia forms Robinson keeps up 

 he indefensible D. Sonorae on the absence of peduncle and on the stel- 

 late pubescence. But it is a well known fact that the pubescence of 



group 



^f TJllt 'p 1- ' '"'? ^'"' ^° 'P'^^ °^ tl^^ P°d^ being hispid instead 

 Inl h f ^^'"'"^ '^""l"' ^- b'-^^hycarpa into our flora on the 

 strengh of a specimen of Howell's from Roseberg, Oregon, but thi-i 

 doubtle-.s IS a form of cuneiforia. ^ 



not It'"^- ^^ ^^' -fr ^°''''''^ ^°^"™^ °f Drabella, Robinson doe.^ 

 Til tZr" T^'' '^'' ''T ^^ ^- ^^'---^^onic^ is surely a pen 

 mebr^r-.Pr.^'p''?-^'' '"^ the Pomona herbarium from material sen 

 ^f the filnn^'n;^ I . "'""i ^'''! ?\ ^^P'^'"^ ^^^^^^ i" hi^ ^orz because 



lt.c!:r:^%o:Mir^^^i!!!-..-lP^^^^ ^ ^tion mark against 



JJra oa, evidently not 



nnial 

 sent 



»^3 



^Mo^ollonic 



douMe^; TLr :Jr-T 1 I ''"' r' '^'^"^^ ^^'^d °f filaments and 

 and 1-1 e' en.ivrtr '° l'^'" *'"^- ^^ ^'~' ^' ^y material go<=s, 

 and ^e:io^rand' i^l^Ln:!^ '^ ^' "^^ '^^ '^^^" ^^^^^ ^- -^^^^ 



no reTfdr2i-^7tiS'\'f''' ^'?P '"' ^^^'^ ^^°^^ confusion, for there seems' 



t comld^ 4d Kv tb?T '?f ''^"^f ""^ P'^^^^ -d ^^-^ «t'^^^-^. '-d this 

 com,..i,ca ed by the Mogollonica forms which seem to run i.tn thi. 



group 



^SilZr^'^flltJ^^ ^■'J'-' J)^^^!"-' publishing a Draba 



bed such a species. Ryd- 



trom shows 



no c-ftfc?! <v(^x' nf ti.„ -"^ x.ut a. xj. unciaus. lidestrom shows 



ceded Mm Wool I^ St Wl ^' ^"1 ^""°^^"^ '^' bell-wethers who pre- 

 last hai^ Rvdberr.hL^^^^^^^^^^ °^ ^^^^•'^- ^P^^t to the 



course. Hif S^k^h^' noa n ''' ?''^ *^^ ^'"''^"^'^ ^^^"^^ «f S"'^'- ^ 

 cm-ermr nearly ffietLpfr ^f' ''■^''' ^^^ ^"™^^ Flora of Colorado, 



get out%nother ed f-Jn Hter ? ' '' °°^^ ^^^ P^°^^' ^"^ ^f ^'^ ^^-'^ ^^ 



portfcnany.^'Sraba i un5e sL'/^n "f ' '"'^ /^ '= ^'^^P^"^^^ P^'^i 

 group, sufficiently disirnrtTlV ir a ^"'^"'^ ^^"^^^s ^ well-marked 



so af 'to be rerdi];t7eLL'" rtt^r Th"'"- '^ '''^' °^" ^^^^^^V^ 

 tergradation that confuses the 'fudenT of ^}'\'' I'''\'^^ ^^^^^ '"' 



•eci^s are li !" ,.„?i *' Caulantlius-Thelypodlum 



group 



tiwu^js, OUT me specie's are wfdeTv varT.i^t^ j "— ^^ -Liici^i.^-aiL..» 



