196 American Midland Naturalist Monograph No. 2 



1. Eryngium L. — Rattlesnake-master 



E. yuccifolium Michx. Meadows, roadsides, and prairie soil, common. 

 July-Aug. 



2. Daucus L. — Carrot 



D. carota L. Carrot. Fields and waste places, very common; nat. from Eur. 

 July-Nov. 



3. ToRlLiS Adans. — Hedge Parsley 



7 . japomcus (Houtt.) DC. Waste ground and edges of woods, occasion- 

 al; nat. from Eur. [T. anthriscus (L.) Gmel.} 



4. Sanicljla L. — Sanicle 



1. Styles longer than the bristles of the fruit, recurved. 



2. Petals greenish white; sepals subulate; fruit sessile, 6 mm. long; woods, 



local. May-June S. mardcindica L. 



2. Petals yellowish green; sepals oval or lanceolate; fruit pedicellate, 3 mm. 



long; woods, common. May-June 5. gregaria Bickn. 



1. Styles shorter than the bristles; fruit 3-6 mm. long; woods, local. June-Sept. 

 S. canadensis L. 



' 5. OsMORHiZA Raf. — Sweet Cicely 



{IVashinglonia Raf.) 



1. Styles and stylopodium 1-1.5 mm. in length, not longer than the petals; 



stems and petioles villous; woods, common. May-June 



O. claytoni (Michx.) Clarke 



1. Styles and stylopodium 2-4 mm. long, e.xceeding the petals; stem and peti- 

 oles glabrous or pubescent; woods, common. May-June. \0. longistylis 



var. villicaiilis Fern.; O. longistylis var. brachycoma Blake} 



O. longistylis (Torr.) DC. 



6. Cryptotaenia DC. — Honewort 

 C. canadensis (L.) DC. Woods, common throughout 111. June-July. 



7. Erigenia Nutt. — Harbinger-of -spring 



E. bulbosa (Michx.) Nutt. Woods, locally throughout 111., except the n.w. 

 counties. Mar. -May. 



8. EuLOPHus Nutt. 



(PcrideriJia Reichenb.) 

 E. americanus Nutt. Thickets and edges of woods, local; apparently absent 

 from the n. counties, and from the s. part of the state. July. 



9. Berula Hoffm. 

 /). pusdla (Nutt.) Fern. Swamps, not common. Known in 111. from Peoria, 

 Woodford, Tazewell, and Mason counties; also Kane Co. July-Sept. [B. erccta 

 sensu Cov., non Sium crcctiim Huds.} 



10. Chaerophyllum L. — Chervil 

 C. procumbcns (L.) Crantz. Moist ground, common. Apr. -May. 



