142 UMBELLIFEKAE 



1. DAUCUS L. 



Involucre and involucels present. Umbels concave in fruit. Fruit 

 slightly flattened dorsally. 



1. D. Carota L. Wild Carrot. Bristly biennial, 1°-3J° high : . 

 leaves decompound, the ultimate divisions cleft and sharp-pointed. — 

 Waste places, Kansas City, Independence and Dodson. Not common. 

 June-August. 



2. PASTINACA L. 



Involucre and involucels absent. Fruit oval, flattened dorsally, the 

 lateral ribs vf inged. 



1. P. sativa L. Wild Parsnip. 2°-5° high : leaf segments ses- 

 sile, ovate, the ultimate divisions out-serrate. — Abundant throughout in 

 waste places. June-September. 



3. POLYTAENIA DC. 



Involucre none. Involucels small. Fruit oval, much flattened dor- 

 sally, the lateral ribs strongly corky-vfinged. 



1. P. Nuttallii DC. Prairie Parsley. 1°-4° high : leaf segments 

 sessile, ovate, pinnatifid or parted, the divisions serrate or entire : fruit 

 Z" long. — -Frequent in barrens throughout the south vrestern part. May- 

 June. 



4. LOMATIUM Eaf. 



Perennial. Involucre none. Involucels present. Fruit oval or oblong, 

 much flattened dorsally, the later ribs winged. 



1. L. daucifolium (Nutt.) C. & E. Fennel-leaved Parslbt. 1° 

 or less high, more or less tomentose : leaf divisions capillary : involucels 

 gamophyllous : fruit glabrous. — Common in barrens from Westport to 

 Adams, Grain Valley and southward. April-May. 



5. THASPIUM Nutt. 



Perennial herbs. Involucre none. Involucels small. Fruit oblong, 

 barely flattened, the ribs strongly winged. 



Glabrous throughout. • 1. T. aureum. 



Strongly puberulent at tbe joints. 2. T. harbinode. 



1. T. aureum Nutt. Golden Alexanders. 1°-2J° high : stem 

 leaves ternate, the leaflets ovate-lanceolate, serrate. — Prairies north of 

 Lee's Summit. Very local. May-July. 



2. T. barbinoae(Michx.) Nutt. Meadow Parsnip. li°-3i° high : 

 leaves bipinnate, the leaflets ovate to lanceolate, incised-serrate to cleft : 

 flowers light yellow. — Locally common in rooky woods along the Blue at 

 Martin City. May-July. 



6. ERYNGIUM L. 



Flowers in dense braoted heads. Calyx teeth sharp-tipped. Fruit 

 ovoid to obovoid, flattened laterally, but not ribbed, tuberonlate-scaly. 

 This genus probably represents a distinct family. 



