UMBELLIFER^E. 147 



16. ANGELICA. Linn. 



Calyx with the margin obsolete. Petals lanceolate, entire 

 acuminate, with a straight or incurved point. Fruit com- 

 pressed on the back, with the central raphe two-winged on 

 each side. Carpels with 3-dorsal filiform elevated ribs; the 

 2 lateral ribs dilated into a mernbranaceous wing. Umbels 

 terminal. General involucre none or few-leaved; partial one 

 many-leaved. Flowers white. Pentandria. Digynia. 



1. A. triquinata Mich. : stem terete, pubescent above; leaves on long 

 petioles, ternate, the partitions quinate ; leafets oblong-ovate, equally 

 serrate, smooth ; lower ones 2-lobed at the base ; general involucre 

 none ; partial one of 6 8 subulate leaves, directed to one side. A. 

 hirsuta Muhl. Ferula mllosa Walt. 



HAS.* Dry grounds. N. Y. to Car. July, Aug. U- Stern 23 

 feet high, erect and straight, white, villous below the umbel. 

 Leafets ovate or subrhomboidal. Umbels mostly 3. Flowers nu- 

 merous, white. 



2. A. afropurpurca Linn. : stem large, smooth, coloured ; leaves ter- 

 nate, on large inflated sheathing petioles ; partitions subquinate ; leaf- 

 ets large, oblong-ovate, coarsely serrate, sublobed ; the three terminal 

 ones often united at base ; general involucre none ; partial one of 

 6 10 subulate leaves. A. triquinata Big. 



HAB. Wet meadows. June. l^.Stcm 3 6 feet high, purplish. 

 (Dr. Darlington says it is often nearly the size of a man's arm 

 at base. ) Floicers white. This, undoubtedly, is the A. atropur- 

 purea of most of our American botanists, except Dr. Bigelow ; 

 but whether it be the true Ljinnaean plant I have no means of de- 

 termining. Our A. atropurpurca is much larger than A. triquin- 

 ,ata, has its leafets large and ovate-oblong, instead of small and 

 ovate. Plant powerfully aromatic. Root poisonous. 



Common Angelica. 



3. A. lucida Linn. : stem erect, glabrous ; leaves bi- and tri-pinnate ; 

 leafets equal, ovate, cuneate at base, incisely serrate ; general involu- 

 cre about 5-leaved ; partial one subulate. Inperatoria lucida Nutt. ? 



HAB. Shady woods. Can. to Car. Pursh. June, July. 1. 

 Stem 1 2 feet high. Floioers white. Root aromatic. 



17. ARCHEMORA. De Cand. 



Calyx with the margin 5-toothed. Petals obcordate, in- 

 flexed. Fruit dorsally compressed, flat, oval or obovate. Car- 

 pds with 5 subcarinate equidistant filiform ribs ; lateral ribs 

 dilated into a membranaceous margin nearly as broad as the 

 seed. General involucre none or few-leaved ; partial one 

 many-leaved. Flowers white. Has the habit of (Enanthe 

 or Sium ; the fruit of Pastinaca. Pentandria. Digynia, 



