620 



UMBELLIFERAE (PARSLEY FAMILY) 



Perennials of dry ground, nearly or quite acaulesoent. Petals yellow or white. 

 (Name from XC^a, a border, referring to the winged fruit.) Peucjsdanum of 

 Am. autli., but scarcely of L. 



1. L. orientale Coult. & Rose. Pubescent, 1-2 dm. high ; leaves bipinnate ; 

 petals white or pinkisli ; fruit nearly round ; dorsal ribs indistinct. (Peuced- 

 auum nudicaule Nutt., in part.)— Gravelly soil, Minn, to la., Kan., and westw. 



2. L. daucifblium (Nutt.) Coult. & Rose. Leaves finely dissected; petals 

 yellow; fruit oval; dorsal ribs prominent. {Peucedanum villosum Nutt., in 

 part.) — Barrens, w. Mo. to Neb. and I'ex. 



38. PSEUDOTAENIdIA Mackenzie. 



Calyx-teeth short, thickish. Petals inferentially yellow. Pruit thiekish, 

 strongly compressed dorsally, oblong-lanceolate ; carpels obcompressed, with 

 slender dorsal ribs and broad somewhat corky lateral wings. Oil-tubes mostly 

 solitary in the intervals. — Glabrous erect perennial, with 2-3-ternate leaves, 

 entire leaflets and exinvolucrate compound umbels. (Name from i/'eC5os, false, 

 and Taenidia, to which this recently discovered genus possesses a marked habital 

 resemblance.) 



1. P. montana Mackenzie. Slender, erect, 5-8 dm. high; root slightly 

 thickened ; petioles broad and clasping ; leaflets elliptical to lance-ovate or 

 -oblong, entire, thin ; umbels 6-12-rayed ; involuoels none or inconspicuous ; 

 fruit mm. long. — Clayey and rocky mountain slopes, Kate's 

 Mt., W. Va. (Mackenzie) and Luray Cavern, Va. (Steele). 



36. POLYTAtNIA DC. 



Calyx-teeth conspicuous. Fruit obovate to oval, much flat- 

 tened dorsally ; dorsal ribs small or obscure in the depressed back, 

 the lateral with broad thick corky closely contiguous wings form- 

 ing the margin of the fruit ; oil-tubes 12-18 about the seed and 

 many scattered through the thick corky pericarp. — A perennial 

 mostly glabrous herb, with 2-pinnate leaves (upper opposite and 

 3-cleft), the segments cuneate and incised, no involucre, narrow 

 involuoels, and bright yellow flowers in May. (Named from 

 TToXi;-, many, and raivla, a fillet, alluding to the 

 numerous oU-tubes.) 



1. P. Nuttdllii DC. Plant &-10 dm. high; 



pedicels and involuoels pubescent. — Barrens, Mich, to n. Ala., 



Tex., Okla., la., and Wise. Fig. 837. 



37. PASTINAcA L. Parsnip 



Calyx-teeth obsolete. Fruit oval, very much flattened dor- 

 sally ; dorsal ribs filiform, the lateral extended into broad wings, 

 which are strongly nerved toward the outer margin ; oil-tubes 

 small, solitary in the intervals, 2-4 on the commissure ; stylo- 

 podium depressed. — Tall stout glabrous biennial, with pinnately 

 compound leaves, mostly no involucre or involuoels, and yellow 

 flowers. (The Latin name, from pasttts, food.) 



1. P. satIva L. Stem grooved ; leaflets ovate to oblong, 

 cut-toothed. — Waste places, open rich soil, etc. (Nat. from 

 Eu.) Fig. 838. 



38. LEVfSTICUM [Rivinius] Hill. Lovagb 



Calyx-teeth obscure. Petals greenish-yellow. Fruit oblong, rounded at each 

 end, strongly ribbed, the lateral ribs moderately winged ; oil-tubes solitary in 

 the intervals, 2 on the commissure ; seed flattish oji the inner face. Stout 



8-37. P. Nuttallll 



P sativa xS. 



