PENTAKDRIA DIGYNIA 197 



broad sheathing nerved greenish-white membrane, 2 to 3 inches wide, densely vil- 

 hsc on the margin. Leaflets 4 to 10 or 12 inches in length, and as wide as lone, 

 more or less cordate and sometimes unequal at base, palmately expanding to wardc 

 the apex inu> unequal lobes, the middle one often 3-lobed ; lobes acuminate, une- 

 (|ually sub-lobed, and somewhat crenate-eerrate, the upper surface sprinkled with 

 ihort hairs, the under side tomentose-pubescent, and villoee along the nerves; 

 petioles 1 to i inches Long. Umbels spreading, very large (sometimes a foot or 

 more in breadth) ; rays numerous, 2 to G inches long, eulcate-striate, lomentosc on 

 one side. Involucre of 2 or 3 lance-oblong membranous vilioee leaves, which mosi- 

 5 I n fall off* Invclucels of 6 or 8 leaves, which are lanceolate, with a long slen- 

 d r acuraination, Bometimes longer, but g nerally shorter, than the rays of the um- 

 \ llets. Calyx-teeth often obsolete, sometimes (especially in rayed flowers) con- 

 spicuous, ovate and acuminate. Petals white, obcordatc, or oval and emarginate, 

 a tapering indexed acumination (sometimes the acumination is not inflexed): 

 the exterior flowers &re generally radiatehy the enlargement of the outer petals,— 

 the lobes each side of the inflexed punt being monstrously produced, giving the 

 petals the appearance of being deeply bifid ; these lobes are 1 sixth to 1 third of an 

 inch in Length, oblong, obtuse, mostly unequal, and striately veined. Fruit oval 

 and often emarginate. or obcordate-oval, much compressed on the back, crowned 

 with the dilated conical base of the diverging styles. Carpels with filiform ribs ; 

 interstices greenish, with single purple vitta in the centre. Commissure with 2 

 ritta. Vitta all shorter than the fruit, inversely clavate. Seed a little convex ex- 

 ternally, flat and keeled on the inner face, ovate, mucronate, pendulous by a short 

 filament at the apex. 



I fab. Low grounds; along Brandy wine : frequent. FL May— June. Fr. July— Aug. 



Obs. This is the tallest of our u lliferous plants; although the stem is n«>t 

 f i stout as that of Angelica alropurpurca. li is said the youn stems of the 

 Here leum arc used as a potherb, by some of the Aborigines. It is the only ascer- 

 tained species of the genus, in the I. States. 



Fruit -with primary and secondary rib&, 



12. Davcus Tkioe. Fruit somewhat dorsally compressed, or subterete on a trans- 

 feree section ; the 5 primary ribs filiform, bristly, the 2 lateral ones on the com- 



lesure, or inner face of the carpels; the -1 secondary ribs more pn.mim.nt, dila- 

 ted into prickles, which are distinct, or united into a wing at base. Daucixeje. JBC- 



152. DAUCUS. L. J\ % ittt. Gen. 259. 

 IDaukos, the ancient Greek name of the Carrot. J 



Calyx with the limb 5-tootlied. Petals obovatc, emargfnate, with an 

 inflexed acumination ; the outer ones of'en radiate, obcordate, or bifid. 

 Fruit ovoid-oblong, somewhat compressed on the back. Carpels with 

 {he 5 primary ribs filiform and minutely bristly ; the 3 intermediate 

 ones dorsal, the 2 lateral ones en the commissure ; the 4 secondary 

 <>ibs equal, prominently winged, each pectinalely divided into a single 

 yaw of prickles. Channels with single vittm t under the secondary 

 ribs. Involucre many-leaved ; leaves phmatifii lavoluceh many- 

 leaved ; leaves entire, or triiid. 



1. D. cinoTA, L. Stem hispid ; leaves hi- or tripinnate ; leaflets pinna- 

 titid, segments lanceolate, cuspidate ; umbel finally concave ; prickles 

 equal to the diameter of the oblong-oval fruit. Deck, Bot.p. 119, 

 Vulgo— Carrot. Wild Carrot. 



IT* 



