122 American Midland Naturalist Monograph No. 2 



2. Leaves acute or acuminate; pistillate inflorescence of closely clustered 

 spikes; fruit indehiscent or splitting irregularly; seeds about 0.8 mm. in 



diameter; banks of streams. July-Sept. [A. tuberculata Moq.} 



A. altissima Riddell 



l.Stem slender, decumbent or prostrate, 10-40 cm. long; leaves obovate or 

 spatulate, rounded or obtuse at the apex; pistillate inflorescence of closely 

 clustered spikes; fruit indehiscent or irregularly splitting; seeds 1-1.2 mm. 



in diameter; banks of streams. July-Sept 



A. subnuda (Wats.) S'tandley 



3. Froelichia Moench 



F. campestris Small. Sandy soil, chiefly in the w. half of the state; also 

 Kankakee Co. June-Sept. [F. floridana of auth., not Moq.} 



53. Phytolaccaceae Lindl. — Pokeweed Family 

 1. Phytolacca L. — Pokeweed 

 P. americana L. Woods and fields, common. June-Sept. [P. decandra L.} 



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



1. MiRABILIS L. 

 (^Allwnia Loefl.; Oxvbaphus L'Her.) 



1. Leaves ovate or ovate-lanceolate, all except the uppermost petiolate; gravelly 

 or sandy soil, particularly along railroad embankments, common through- 

 out 111. May-Aug. Umbrella-wort M. nyctaginea (Michx.) MacM. 



1. Leaves linear to lanceolate, sessile. 



2. Leaves lanceolate, 0.5-5 cm. wide; sandy meadow near lake, Hyde Park, 



Chicago, Aug. 8, 1889, Agnes Chase 1173 



M. hirsuta (Pursh) MacM. 



2. Leaves linear, thick, glaucous, usually not more than 5 mm. wide; road- 

 side near Morgan Park, Cook Co., Aug. 16, 1898, Hdl 



M. linearis (Pursh) Heimerl 



55. Illecebraceae Lindl. — Whidow-wort Family 



1 . Leaves oval 1 . ParoiiMchia 



1. Leaves linear-subulate 2. Scleranihus 



1. Paronychia Adans. — Forked-chickweed 



(Anychia Michx.) 

 l.Stem glabrous; sepals oval; utricle longer than the calyx; sandy soil. June- 



Aug P. canadensis (L.) Wood 



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



not common. June-Sept. [Anychia polygonoides Raf.] 



P. jastigiata (Raf.) Fern. 



2. Scleranthus L. 

 S. annuus L. Waste ground; nat. from Eur. Apr. -Oct. 



