PLATANACEAE (PLANE TREE FAMILY) 



75 



MITELLA 



Low herbs with round, heart-shaped 

 leaves and mostly naked flowering stems; 

 flowers in a slender raceme. Petals small, 

 pinnatifid. Ovary one-celled. 



M. diphylla, BISHOP'S CAP. A hairy plant, 

 with heart-shaped, acutely lobed leaves, those 

 on the stem two and opposite, nearly sessile ; 

 flowers white, in a raceme 1.5-2 dm. long. 

 Rich woods. May. 



RIBES 



Heuchera hispida, 

 Alum root. 



Low and sometimes prickly shrubs with alternate, palmately 

 lobed leaves. Flowers small, clustered. Fruit a berry crowned 



with the remains of the calyx. 



R. Cynosbati, PRICKLY GOOSEBERRY. 

 A spiny shrub, often with bristly pric- 

 kles, 0.5-1 cm. long; leaves pubescent; 

 calyx broadly bell-shaped ; berries armed 

 with long spines. Rocky woods. April 

 to June. 



R. oxyacanthoides, SMOOTH GOOSE- 

 BERRY. A spiny shrub, spines 3-8 mm. 

 long; leaves smoothish; flowers green- 

 ish, purple, or white; calyx broadly ob- 

 long; berries smooth, or sometimes with 

 whitish prickles. The common north- 

 ern gooseberry. May to June. 



R. floridum, WILD BLACK CURRANT. 

 An unarmed shrub with lobed leaves, 

 doubly serrate, and with resinous dots 

 beneath ; racemes of large yellow and 

 whitish flowers, drooping and downy; 



Mitella diphylla, Bishop's cap. cal y x tubular > bell-shaped, smooth. Rich 



woods. April to May. 



PLATANACEAE (PLANE TREE FAMILY) 



Trees with alternate, palmately-lobed leaves, and monoecious 

 naked flowers in separate and naked spherical heads. 



