82 AMAKANTHACEAE 



1. A. hastata L. SPREADING ORACHE. Rather spreading, l-2 

 high, scurfy : leaves broadly triangular-hastate, nearly entire : flowers 

 in panicled, interrupted leafless spikes, or axillary : sides of fruiting 

 bractlets tubercled. In waste places at Westport, Independence and 

 Greenwood. Uncommon. July-October. 



5. KOCHIA Roth. 



Erect herbs with narrow, entire leaves and flowers in axillary clusters. 

 Calyx 5-lobed, membranous, somewhat winged in fruit. Embryos of seed 

 annular. 



1. K. Scoparia (L.) Roth. Annual, l-3 high, pubescent above: 

 utricle usually flat. Along Independence Ave., Kansas City, near east 

 end of car line. A few clumps. August-October. 



6. CORISPERMUM L. 



Much branched herbs, with flowers solitary in axils of the upper bract- 

 like leaves, and forming dense terminal spikes. Calyx of a solitary, thin 

 sepal. Stamens 1-3. Pericarp adherent to seed. 



1. C. hyssopifolium L. BUG SEED. l-3 high : lower leaves linear, 

 the upper ovate-lanceolate. Sand-bars along the Missouri River near 

 Courtney. Rare. Also opposite Kansas City in Clay County. July- 

 September. 



7. SALSOLA L. 



Flowers perfect, sessile, 2-bracteolate. Calyx 5-parted, appendaged by 

 a broad horizontal wing. Stamens 5. Styles 2. 



1. S. Tragus L. RUSSIAN THISTLE. A bushy branched annual : 

 leaves succulent, awl-shaped, very prickly pointed. Along railroad at 

 Sheffield. Not common and shows little tendency to spread. May- 

 October. 



FAMILY 39. AMARANTHACEAE J. St. Hil. 



Herbs with alternate or opposite leaves. Flowers in terminal spikes, 

 scarious-bracted at base. Calyx 2-5-parted. Stamens 1-5. Ovary 1-celled, 

 1-ovuled. Stigmas 1-3. Fruit a utricle. 



Leaves alternate. 



Calyx lobes 3-5. 1. AMARANTHUS. 



Calyx of perfect flowers absent. 2. ACNIDA. 



Leaves opposite. 3. FROELICHIA. 



1. AMARANTHUS L. 



Weeds with monoecious, polygamous or dioecious flowers in dense ter- 

 minal spikes or axillary clusters, 3-bracted at base. Calyx of distinct 

 sepals. Fruit beaked by persistent styles. Leaves awn-tipped. 



Upper flowers in dense terminal spikes. 

 Leaves not spiny in axils. 

 Flowers polygamous. 



Spikes'stout. 1. A. retroflexus. 



