ZiziA. UMBELLIFER^. 271 



2. ZiziA AUREA, Koch. Goldeti Meadow Parsnep. 



Lower leaves biternately, and the uppermost ternately divided ; segments oblong-lanceolate 

 or rhomboid, sharply serrate, the serratures cartilaginous on the margin. — Koch, Umb. p. 129, 

 ex DC. prodr. 4. p. 100; Hook.Jl. Bor.-Am. 1. p. 260; Beck, hot. p. 143 ; Darlingt. fl. 

 Cest. p. 185 ; Torr. ^ Gr. fl. N. Am. 1. p. 614. Smyrnium aureum, Linn. sp. 1. p. 262 ; 

 Michx. fl. 1. p. 171 ; Ell. sk. 1. p. 359. Sison aureus, Spreng. in Schult. syst. 6. p. 410. 



Root branching, with thick fasciculate descending fibres. Stem about 2 feet high. Leaves 

 all divided ; the radical and lower cauline ones on long petioles ; upper ones nearly sessile, 

 sometimes biternately divided : leaflets 1-2 inches long, sometimes all, but usually only the 

 middle one of each division attenuate at the base ; the serratures, when old, with a distinct 

 cartilaginous border. Umbels opposite the leaves and terminal, on very long naked peduncles ; 

 the rays 10-15, rigid and somewhat erect in fruit. Fruit about 2 lines long, oval, dark 

 purple ; the ribs rather prominent, but obtuse. 



Woods, banks of rivers, etc. Highlands of New-York {Dr. Barrati). Differs from the 

 preceding in the leaves being all divided, and more acutely serrate. The fruit of the two 

 species can hardly be distinguished. 



^2. TjEnidia, Torr. & Gr. Carpels with slightly prominent ribs : intervals with three vitta : 



commissure with four vittce. 



3. ZiziA iNTEGERRiMA, DC. Eutire-kaved Zizia. 



Leaves all bi-triternately divided , the segments oblong-ovate, entire ; rays of the umbel 

 fihform, elongated. — DC. in mem. hist. nat. Genev. A ^ and prodr. 4. j>. 100; Beck, hot. 

 p. 143 ; Darlingt. fl. Cest. p. 187 ; Torr. ^ Gr. fl. N. Am. 1. p. 614. Smyrnium integer- 

 rimum, Linn. sp. l.p. 263; Michx. fl. \.p. 171 ; Pursh,fl. \.p. 196; Nutt. gen. \.p. 195. 

 Sison integerrimus, Spreng. in Schult. syst. 6. p. 410 ; Torr. fl. 1. p. 305. 



Whole plant very smooth and somewhat glaucous. Stem two feet high, terete, slender. 

 Leaves thin ; the lowest ones on longish petioles, and biternate ; upper ones with dilated 

 sheathing petioles ; alternate segments about an inch long, unequal at the base, and sometimes 

 a little cordate. Umbels opposite the leaves ; the rays numerous, 2-4 inches long. Umbel- 

 lets many-flowered ; many of the flowers abortive. Petals oval, with a narrow inflexed point. 

 Fruit nearly orbicular or oval, dark purple or brown when mature. 



Rocky woods, hill-sides and banks of rivers, Fl. May - June. Fr. July. 



