UMBELLIFERAE (PARSLEY FAMILY) 99 



CRYPTOTAENIA 



Perennial, with thin 3-foliolate leaves, no involucre, involucels 

 of minute bractlets or none; white flowers; and linear-oblong, 

 glabrous fruit with obtuse ribs. 



C. canadensis, HONEWORT. Plant becoming 9 dm. high; leaflets 

 large, ovate, pointed, doubly serrate, often lobed ; umbels irregular 

 and unequally few-rayed ; fruit often curved. Woods. June, July. 



ZIZIA 



Smooth perennials, with ternate leaves, no involucre, involucels 

 of small bractlets, yellow flowers, and ovate to oblong, glabrous 

 fruit with filiform ribs. 



Z. aurea, GOLDEN ALEXANDERS. Leaves 2 or 3- 

 ternate, the radical very long-petioled ; leaflets 

 ovate to lanceolate, serrate, acuminate; rays 15- 

 25; fruit oblong. Woods and meadows. April 

 to June. 



TAENIDIA 



Glabrous and glaucous perennial, with ter- Zizia aurea, Golden 

 nate leaves, mostly no involucre or involucel, 

 yellow flowers, and oblong fruit with filiform ribs. 



T. integerrima, YELLOW PIMPERNEL. Slender, becoming 10 dm. high ; 

 leaves 2 or 3 ternate; leaflets lanceolate to ovate, entire. Sandy woods 

 and thickets. May, June. 



HERACLEUM 



Tall, stout perennials, with large compound leaves, broad um- 

 bels, deciduous involucre, many-leaved involucels, white or pur- 

 plish flowers, and obovate fruit, with broad lateral wings and 

 filiform dorsal ribs. 



H. lanatum, Cow PARSNIP. Woolly, with grooved stems becoming 

 3 m. high ; leaves ternate, with broad, irregularly cut-toothed leaflets. 

 Wet ground. June, July. 



