92 American Midland Naturalist Monograph No. 7 



1. Stem 30-60 cm tall, branched near the base; wings of the fruiting 

 calyx interrupted, forming 6 or 7 spine-like teeth; waste ground, 

 usually along railroads; adv. from w. of the Mississippi R. 

 June-Oct F. gracilis (Hook.) Moq. 



5. Iresine P.Br. — Blood-leaf 

 I. rhizomatosa Standi. Wet ground in woods, rare; Pulaski and 

 Wabash counties. Aug.-Oct. [/. celosioides sensu auth., non (L.) 

 Miclix.]. 



29. Illecebraceae Lindl. — Whitlow-wort Family 



1. Leaves oval 1. Paronychia 



1. Leaves linear-subulate 2. Scleranthus 



1. Paronychia Adans. — Forked-chickweed 

 1. Stem glabrous; sepals oval; utricle longer than the calyx; sandy 



soil, locally throughout 111. June-Aug P. canadensis (L. ) Wood 



1. Stem puberulent; sepals ovate; utricle about as long as the calyx; 



sandy soil, mostly in the southern part of the state. June-Sept. 



[Anychia polygonoides Raf.] P. jastigiata (Raf.) Fern. 



2. Scleranthus L. 



S. ayinuus L. Waste ground, occasional; nat. from Eur. Apr.-Oct. 

 30. Phytolaccaceae Lindl. — Pokeweed Family 



1. Phytolacca L. — Pokeweed 

 P. arnericana L. Woods and fields, common. June-Sept. [P. 

 decandra L.]. 



31. Nyctaginaceae Lindl. — Four-o'clock Family 



1. Mirabilis L. 



{Allionia Loefl. ; Oxyhaphus L'Her.) 



1. Leaves ovate or ovate-lanceolate, all except the uppermost petio- 

 late; gravelly or sandy soil, particularly along railroad embank- 

 ments, common throughout 111. May-Aug. Umbrella-wort 



M. nyctaginea (Michx.) MacM. 



1. Leaves linear to lanceolate, sessile. 

 2. Leaves lanceolate. 



3. Stem more or less glandular-pubescent; Iruit with broad 

 smooth angles; sandy meadows or along railroads; known 

 from Cook, Jo Daviess, and Tazewell counties; adv. from 



the western states. July-Aug M.hirsuta (Pursh) MacM. 



3. Stem glabrous or nearly so; fruit with tuberculate angles; 

 pastures and borders of fields; known from Cook, Grundy, 

 and Logan coimties; adv. from the southern states. July- 

 Aug M. albida (Walt.) Heimerl 



