Sanicula. UMBELLIFERyE. 265 



2. Sanicula Canadensis, Linn. (Plate XXXII.) Canadian Sanicle. 



Leaves digitately 3 - 5-parted, the segments incisely and mucronately serrate ; sterile 

 flowers few, slightly pedicellate and much shorter than the fertile ones ; styles shorter than 

 the prickles. — Linn. sp. l.p. 235 ; Willd. sp. 1. p. 1366 ; Muhl. cat. p. 30 ; DC. prodr. 4. 

 p. 84. S. Marilandica, ;S. Canadensis, Torr. fl. 1. p. 302. 



Differs from the preceding species chiefly in the less divided leaves, fewer sterile flowers 

 on much shorter pedicels, smaller fruit, and in the very short inconspicuous styles. The 

 prickles of the fruit are also pretty regularly arranged in rows. 



Woods and thickets ; common. Fl. June - August. Fr. August - September. I am 

 indebted to my valued friend, J. Carey, Esq., for pointing out to me the principal diagnostic 

 marks of our two species of Sanicula, and am now persuaded that they are quite distinct. 

 By the difi"erences in their styles alone, they can always be readily known. Both species are 

 employed as domestic medicines, under the name of Blacksnake-root ; being reputed dia- 

 phoretic, stimulant and stomachic. 



Tribe III. AMMINEjE. Koch. 



Fruit evidently compressed laterally, and usually so7newhat didymous. Carpels with 5 

 equal filijorm and sometimes slightly winged primary ribs ; the lateral ones marginal : 

 secondary ribs none. Vittce. various. Seed gibbously convex on the hack and Jlattish 

 on the face, or terete. — Umbels perfectly compound. 



CONSPECTUS OP THE GENERA. 



4. DiBCOPLEDR*. Fmit ovoid. Carpels with the 3 dorsal ribs filiform ; the two lateral ones united with a thick corky 



accessory margin. Intervals with single vittaj. — Leaves finely cut. 



5. BcPLEiRCM. Calyx-teeth obsolete. Fruit ovoid-oblong, crowned with the depressed stylopodium. Carpels with 5 



more or less prominent ribs, with or without vittoe. — Leaves undivided. Flowers yellow. 



6. CicuTA. Calyx-teeth distinct. Fruit roundish, didymous. Carpels with 5 flattish equal ribs. Intervals with single 



vitUe. — Involuccis many-leaved. Flowers white. 



7. SiUM. Fruit ovoid or globose, somewhat didymous, crowned with the depressed stylopodium. Carpels with 5 rather 



obtuse ribs. Inter\'als usually with several vittie. — Involuccis many-lcavcd. Flowers white. 



8. Cbyptot«:nia. Fruit linear-oblong, crowned with the short stylopodium and straight styles. Carpels with 5 equal 



filiform obtuse ribs. Vittffi very narrow ; one beneath each rib, and one in each interval. — Leaves 3-parted, 

 Involucre none. Involuccis many-leaved. Flowers white. 



9. ZiziA. Fruit roundish or oval, somewhat didymous. Carpels with 5 or more or less prominent (not winged) equal 



rib«. Intervals with 1-3 vittie. — Leaves tcrnatcly divided. Flowers yellow. 



4. DISCOPLEURA. DC. mem. Urnh.p. 38. ^ S ^ 9; Endl. gen. 4398. DISCOPLEURA. 



[ From the Greek, diskns, a disk, and iikurim, a side ; the two sides of the fruit being marked with a kind of disk.] 



Calyx-leeth minute, subulate, persistent. Petals ovate, entire, with a minute inflc.vcd point. 

 Fruit ovoid. Carpels wilh the 3 dorsal ribs filiform, prominent and rather acute ; the two 

 [Flora.] 34 



