94 BERBERIDACEAE 



6//_9// broad. — In ponils northeast of Lee's Summit and at Little Blue 

 Tank. June-.Tuly. 



11. OXYGRAPHIS Bunge. 



Like Bonunculm but achenes longitudinally striate. 



1. O. Cymbalaria (Pursh) Prantl. Glabrous, spreading by runners: 

 leaves cordate, crenate, long-petioled : flowers 1-9, scapose, W^-i^' broad. 

 —On sand-bars along the Missouri River at Courtney. Also in Clay 

 county, Mo., near Harlem. Usually rare. June-August. 



12. THALICTRUM L. Meadow Rue. 

 Erect perennials with ternately decompound leaves. Flowers greenish- 

 white, dioecious or polygamous. Sepals 4-5. Petals none. Stamens 

 many. Carpels 4-15, longitudinally striate. 



Flowers dioecious, in April-May. 1. T. dioicum. 



Flowers polygamous, in June-July. 2. T. purpurascens. 



1. T. dioicum L. l°-2° high : leaflets thin, orbicular, 5-9-lobed. — 

 Very abundant on the rocky bluCE of the Missouri River northwest of 

 Fairmount Park. 



2. T. purpurascens L. 3°-6° high : leaflets thick, oblong, about '^- 

 lobed. — Common in meadows and woodlands throughout. 



Fabhly 49. BERBERIDACEAE T. & G. 

 Herbs with alternate or basal leaves. Sepals and petals present, 0-9 

 each, imbricated. Stamens hypogynous, opposite the petals or more 

 numerous. Pistil one, superior, few-manyovuled. 



Flowers in terminal panicles. 1. Caulophyllum. 



Flowers solitary. 2. Podophyllum. 



1. CAULOPHYLLUM Michx. 

 Leaves decompound. Sepals (>, with 3-1 bractlets at base. Petals 6, 

 small. Stamens G. Anthers dehiscent by valves. Ovules 2. Fruit 

 berry-like. 



1. C. thalictroides Michx. Blue Cohosh. 1°-3° high, glaucous: 

 leaflets 2-3-lobed : flowers greenish-purple. — Frequent in rich woods neir 

 Sibley. April. 



2. PODOPHYLLUM L. 



Sepals 0, very fugacious. Petals (i-9, white. Stamens 12-18, their an- 

 thers longitudinally dehiscent. Ovary many-ovuled. Fruit a large 

 berry. 



1. P. peltatum L. May Apple. 1°-2° high : sterile stems bearing 

 a solitary centrally peltate, orbicular, 7-9-lobed leaf : the fertile bearing 

 two similar, but one-sided leaves, with the nodding flower (2' broad) in 

 the fork.— Very abundant in woods. April-May. 



