Archangelica. UMBELLIFERiE. 



277 



2. Archangelica hirsuta, Torr. df Gr. (PI. xxxvi.) Downy Angelica. 



Stem striate, the summit with the peduncle and rays of the umbel tomentose-pubescent ; 

 leaves bipinnately divided, the divisions usually quinate ; segments ovate-oblong, equally 

 serrate, rather thick ; the upper pair connate, but not decurrent at the base ; umbels spreading • 

 fruit pubescent.- Torr. ^ Gr. fl. N. Am. 1. p. 622. Angelica hirsuta, Muhl. cat. p. 3o! 

 Angelica triquinata, Nutt. gen. l.p. 186; Ell. sk. l.p. 252; Torr.fl. l.jj.315; DC. prodr. 

 4. p. 166; Hook. ji. Bar.- Am. 1. p. 267 ; Beck, hot. p. 147 ; Darlingt fl. Cest. p. 193^ 

 Pastinaca triquinata, Spreng. Umb. p. 68. t. 6. /. 2. Ferula villosa, Walt.fl. Car. p 115 • 

 Pursh, fl. 1. p. 192 (excl. syn.). ' 



Stem 3-5 feet high, straight and erect, much more slender than in the preceding species, 

 simple. Leaves distant ; lower ones on long slender petioles, the secondary divisions with 

 5-7 segments ; upper leaves on shorter, somewhat sheathing, dilated petioles : segments 

 1 - 2 inches long, mostly acute, the lower exterior one often lobed or auriculate at the base- 

 Umbels on long peduncles, the upper part of which, and the rays, are clothed with a dense 

 white pubescence. Umbels usually 3 ; the numerous spreading rays about 2 inches long. 

 Involucels of 6 - 10 subulate leaflets, as long as the umbellets. Petals obovate, with a small 

 inflected point. Fruit about 2^ lines long and of about the same breadth, emarginate at each 

 end, greenish-white when mature : dorsal ribs very prominent and acute. Vittce usually 20 ; 

 8 of which belong to the commissure. 



Dry woods, thickets and hill-sides. Fl. July - August. Fr. September - October. In 

 this species the seed does not so readily separate from the pericarp, as in the preceding. 



Tribe VI. PEVCEDANE^. DC. 



Fruit more or less compressed dorsally, surrounded with a single dilated entire smooth 

 margin, which is flattened or slightly convex, but not thickened at the edge. Capsule 

 with five filiform or rarely winged ribs, of which the lateral ones are contiguous to the 

 dilated margin or united with it. Seed flattened, or convex on the back. 



14. ARCHEMORA. DC. mem. Umb. p. 52, and prodr. 4. p. 188. aucbemora. 



[A fenciful name, given by De Candolle, in aUusion to Arch^wrus, who ia said to have died from eating parsley, or some 



other umbelliferous plant.] 



Margin of the calyx 5-toothed. Petals obcordate, with an inflexcd point. Fruit lenticularly 

 compressed, oval or obovate. Carpels with 5 filiform, obtuse, approximated, equidistant 

 ribs ; the lateral ones dilated into a flattish margin, nearly as broad as liie disk. Intervals 

 with single large vittx. Commissure willi 4-6 vitlje. Carpophore 2-parted. Seed flat.— 

 Perennial smooth herbs, growing in swamps. Leaves pinnately or tcrnalely divided ; the 

 BegmenlB entire or remotely toothed. Involucre none or few-leaved. Involucels of numerous 

 leaflets. Flowers white. 



