94 



roNTKIHUTIONS KKi»M THK NATIONAL IlKKMAUirM. 



A ^(Mius of iilM)ut 10 sjM'cics, cliii'Hy North Aincriciiii, ori(» species 

 beiii^ M«>xi<iiii. luiotlicr (tlu^ tyjx') Kuropciin. 



IiniiuHliiilt'ly fl)lll^\vill^^ niir Kt'viHion, in which but ihrcf Ninth Aiiu'ricaii H|K'ci('H 

 of ('iV'i(/(( wt-rt' n'ciijriiizni, I'mft'ssor (in'«'iic ( I'ittniiiii2: 1 1 1. iSSd) n-vinnl the jiciiiiH, 

 (liHt'iiiimiii^r Iht' |>n>Ht'iic«' uf ('. vii-umi \,. in i>ur llora, mni ^|»'^rr(•pltin^: si'vonil wi'stcrii 

 H|i('ci«'s. Al'tiT 11 Htndy nf very niiitli ninn- ahnnilant matfriai, we iiavc cunchiilcd 

 tiiat iiis ptiintH arc well taken, ami the following prcscntatinM t'ollnwH lai^icly the 

 liiU'H whicli he projMtwd. In hin icviHion I'mfcHHor (ireene laid spi'cial strenn upon 

 characters nupplicd hy the rcintstucks an<l nmtH, and proposed the foilowinjr key: 

 *Root axis very short, nearly or <|nite erect, not eidaryed, its jiartitions crowded, 

 •t-H«M)tsall alike, slender fihrous. 

 ( '. vlriimi. 

 +~ 1- Main roots coarse, elongated, lleshy lilirons. 



C. lioldiidiri, ('. orrideiitnlin, (\ jiiirimnitd [<iuii</l(ixii]. 

 +- -t- -I- Main roots oval or oblong, Heshy tidn'riforni. 

 ('. iiKiriihilii [aiu\ cinilKnii], ('. hnlUifira. 

 **Rhizoinatons species; the root axis gn-atly cidar^red, horizontal, oidy jtartly < - 

 not at all snbterranean, emitting; librons roots from iMMieath. 

 f. niijiiUK, ('. ciili/iiniicd. 

 We reproduce the above key in the hope that it may he fnrtiier tested in the field. 



for with the material at our 

 command we have not been 

 al)le to follow it fully. While 

 we reco)fni/e in I'rofessor 

 (ire« lie's typical material the 

 differences sufrgesteil, we do 

 not find them con.stant. The 

 fleshy thickening; of the root- 

 .xtocks and their direction, a-^ 

 well as the thickne.'<sand elon- 

 gation of the roots, seem to 

 vary with the nature of the suh- 

 stratum, as might Ir; expected. 

 Nevertheless, we find that the 

 differences thus suggested to 

 Proft'ssor (Jreene have served 

 to call attention to what seem 

 to U8 iKjtter characters upon 

 which to base his specici^. 

 Aside from the curious bulbiferous habit of ('. hnlliifcni, the other species seem to 

 be best grouped primarily by their obUmg or orbicular fruits, further separation being 

 made upon differences in thefniit ribs and in the foliage. 



We have included, chiefly under <'. DcriilniUtliK, several forms which we<lo not feci 

 justified in separating, but which better and iiujre abimdant material may prove to 

 be worthy of indepi-ndent rank. 

 Axils of leaves bearing no bulblets. 

 Fruit orbicular. 



leaves simply pinnate 1 . C (•(tliforiilcn. 



I^ieaves twice to thrice pinnate. 



Ribs verybroml; oil-tuln's very narrow. 

 Ijeaflets thickish, lanceolate to ovate-lanceolate, closely and .sharply toothid 



or even cleft, strongly reticulate beneath 2. C. douglasii. 



Lt^aflets thinner, linear-lanceolate to lanceolate, not so closely or sharply 

 serrate, not strongly reticulate l)eneath ;i ('. vagaiis. 



Fio. 24.— Clctita niR(MiIat4i: n.h, x8. 



