t£$ J-EXTrANDRIA DlttYN'U 



Smvrnium aurcum. WiUd. Sp. Up. 1468. Mx.Am. I. p. 181. ^^ 



$y*« l./i. 322. Ait. Kew. 2. />. 158. Muhl. Catul. p. 31. Pur^,^,, 



1./). 196. /://. fi*. l.p. 359. JKjttii J»os*. />. 113. FloruL Ccstr.p. 



36. Ztwrf/. Ency.p. 210. 



Thaspium aurcum. Mitt. Gen. l./>. 106. 



Sison aureus. Torr. FL Up. 305. E/M*d. Camp. p. 134. 



Golden Zizia. Vulsfl— Golden Alexanders. 



Jtool perennial. ««fw I8inches to '2 feel high, somewhat branched above ; angir. 

 Jar, sulcate, smooth. Leaves biternate : the radical onee on petioles G to 9 inches 

 long i leaflets, or segments, I to 2 inches long, and half an inch to an inch wide, 

 nearly equally serrate, smooth, the lateral ones sessile, the terminal ones petiolate* 

 <h# middle terminal one 3-parted. Umbels generally opposite the leaves; rays 

 about an inch long, hivoluce Is of 3 or 4 lance-linear leaves, somewhat united at 

 base, about as lon-as the rays of the uinbellets. Calyx minutely 5-toofhed. Petal* 

 bright yellow. [Fruit elliptic. ( 'arpels with 3 winged ribs on lk« back. Torr.) 

 Mab. Woodlands ; Hath, near West Chester : not common. Fl. May— June. iV. 



Obs. 1 find, on closer investigation, that I have been in the habit of mistaking 

 TTlillWirm barbinotte, lXi'.U. for this plant: Bat 1 have a specimen in flutter, from 

 Ike above locality, which appears to agree pretty well with Uie descriptions of Z. 

 aurca. The JruU I ha\e not seen. 



3, Z. cotidata, Koch. Radicalleavcs simple, cordate, crenatc-dentate, 

 on long petioles; stem leaves ternate, subsessile, the leaflets ovate, ser- 

 rate, pctiolate ; iuvolueels small, of 1, 2 OT 3 leaves. Heck, Jlot.j). 143. 

 Tkapsia trifoliate 1 WiUd. Sp. Up. 1465. Per*. Syn. I. p. 322. Ait. 

 j£ev>. 2. p. lf>6. Not of Torr. 



Smymium cordatum. Mx. Am. Up. 170. Pursh.Am. 1. p. 196. KtL 

 Sk. \.p. 359. Torr. FL 1. p. 307. Ejnsd. Com/), p. 134. Floruh 

 Cestr.p. 36. Lindl Eneg.p. 216. Also, Pert. Syn. Up. 322. 

 S. trifoliatum. Muhl CataLp.SU JfuU.Gm.l.p.W. Burt. Phil 

 I. p. 146. 



Jlteo {fide DC.tedgi ?)* Sison trifoliatum. Mx. Am. U p. 168. 

 Muhl? CataL p. 81. Ptir*fl ? ^»m. 1./;. 104. EH? Sh. Up. 356. 

 Cordatk Zizia. r«/y^ — Heart-leaved Alexanders. 



Jtoo* perennial. Stem 1 to 2 feet high, somewhat branched above, striate, ©jr 

 jriightly sulcate, smooth (sometimes pubescent). Radical leaves 1 or 2 to 4 inches 

 long, and 1 to '5 inches wide, smooth, somewhat glaucous beneath ; petioles 3 to 9 

 inches long, Striate-grooved, smooth, or occasionally quite pubescent. Stem leaves 

 ternate, or 3-parted ; lower ones on short petioles, upper ones sessile. Umbels on 

 peduncles S to G inches Ion?, terminal and axillary ; rays 7 to 10 or 11, unequal, half 

 «n inch to an inch and half Ion?, silicate. Iuvolueels of 2 or 3 small lanceolate 

 leaves. Calyx obsoletcly .Vtoothed. Petals always yellow (white, sometimes yel- 

 low, Ell.). Fruit roundish-ovate : sides compressed. Carpels with 3 conspicuous 

 jsqual ribs on the back, the 2 marginal ones not so prominent ; interstices convex 

 greenish brown. 

 jffub. Woodlands ; borders ef thickets : common. Fl. May. Fr. July. 



Obs. This plant is generally smooth, except sometimes a pubescent ring at the 

 joints; but I have specimens in which the lower part of the stem, the petioles of the 

 Radical leaves, and the nerves on their upper surface, are densely covered with* 

 jhort pubescence. I have never seen the flowers white ; and think Mr. Ellioti Is 

 "tf&bably mistaken in that particular- Red -ami Mue flowers afte* vary tate-wUfff ; 

 >cv yrttoi*v*m99 sea res It even 



