PENTANDRIA. DIGYXIA. 197 



large, unequal, and acute, commencing usually a little be« 

 low the middle of the leaflet (leaflets 10 to 15 lines long). 

 Peduncles of the umbells rather short. Involucrum none. 

 Umbellets about 20-flowered, more than half of them abor- 

 tive. Calix distinct, 5-toothed. Petals deep yeUuw, acu- 

 minate, obliquely involute. Styles persistent, filiform, 

 erect, about twice the length of the petals, with distinct 

 but small stigmas. Fruit nearly as large as that of the 

 parsnip, elliptic in the outline. Seeds elliptic, convex, 

 one of them with 2 broader alated lateral ridges, and the 

 other with one dorsal alated ridge, margins alated, con- 

 nivent, intervening elevations much lower. Seeds aro- 

 ma'ic, and highly camphorated. Hab. On the shady 

 banks of the Scluiylkill near Philadelphia. 4. acuminatum, 

 Rees' Cyclopedia, under Sm^ndum. — In Pennsylvania: 

 5. actceifoUum {^Ligusticuin actceifolium, Mich. Flor. Am. 1. 

 p. 166.) "involucell setaceous; fruit oblong-oval, with 10 

 partly plated ribs; leaflets oval, equally toothed.'* Many 

 of the flowers sterile. Involucrum none. -f". 



lift Flowers incomplete. 



)5. ATRIPLEX. L. (Oiachc.) 



Flowers polygaiiKnis. — Calix 5-parted. Co- 

 rolla none. Style bidd. Fcmimiie iXower; c^Mk 

 ^parted, compressed. Seed vertical. 



Flowers glomerate, paniculate; bisexual; masculine 

 and feminine flowers intermixed, or on separate plants; 

 leaves alternate, rarely subopposite. Mostly annual, rarely 

 shrubby. 



Species. 1. A. *canescem. {Calligonum canescens, 

 Pursh, Flor. Am. Sept. 2. p. 370.) Dioicous; pulverulently 

 furfuraceous and canescenc; stem shrubby, dift'use; leave.-} 

 linear-oblong, entire, obtuse, attenuated towards the base, 

 younger leaves acute. — Obs. Stem much branched, and 

 diflTuse, about 3 or 4 feet high, with round grey br^inches. 

 Leaves alternate, 15 to 20 lines long, about 3 wide, some- 

 times cuneate-oblong, obtuse and nov/ and then emargi- 

 nate, very entire, covered with the wiiite branny scales 

 common to this and the preceding genus. Flowers dioi- 

 cous, with 4, 5, and 6 stamens, conglomerated towards 

 the ends of tlie branches; male clusters (at least the lower 

 ones) pedunculate. Calix of the female flowers 2-parted, 

 becoming indurated, acute, with 4 unequal cristated or 

 dentated angles. Stvle 1, deeply biful, exserted. 

 S 2 



