Sanicula. UMBELLIFER.E. 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, ^. Canadensis, Torr. fl. \. y. 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 diff"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 somewhat didymous. Carpels with 5 

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

 secondary ribs none. Vittce various. Seed gibbously convex on the back and flattish 

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



CONSPECTUS OF THE GENERA. 



4. DiscoPLEUBi. Fruit ovoid. Carpels witli the 3 dorsal ribs filiform ; the two lateral ones united with a thick corky 



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



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



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



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



vittffi. — Involucela many-leaved. Flowers white. 



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



obtuse ribs. Intervals usually with several vittse. — Involucels many-leaved. Flowers white. 



8. Cryptotknia. Fruit linear-oblong, crowned with the short stylopodium and straight styles. Carpels with 5 equal 



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

 Involucre none. Involucels many-leaved. Flowers white. 



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



ribs. Intervals with 1-3 vitta. — Leaves ternately divided. Flowers yellow. 



4. DISCOPLEURA. DC. mem. Umb.p. 38. <. 8 ^ 9; Endl. gen. 4398. discopleura. 

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



Calyx-teeth minute, subulate, persistent. Petals ovate, entire, with a minute inflexed point. 

 Fruit ovoid. Carpels with the 3 dorsal ribs filiform, prominent and ratlier acute ; the two 

 [Flora.] ' 34 



