86 KEY AND FLORA 



1. T. dioicum L. EARLY MEADOW RUE. Plant 1-2 ft. high, 

 smooth and pale or with a bloom. Leaves all petioled, most of them 

 thrice compound in threes ; leaflets thin and delicate, roundish, 3-7- 

 lobed. Flowers in slender panicles, purplish or greenish ; starninate 

 ones with slender, thread-like filaments, from which hang the con- 

 spicuous yellowish anthers. Rocky woods and hillsides. 



2. T. polygamum Muhl. TALL MEADOW RUE. Stems from fibrous 

 roots, tall and coarse, nearly or quite smooth, 4-8 ft. tall. Leaves 

 twice compound, those of the stem sessile, the others long-petioled ; 

 leaflets oval or oblong, often cordate, smooth or downy beneath, 

 quite variable in size on the same plant. Flowers small, in large 

 panicles. Sepals 4 or 5, white. Filaments club-shaped. Akenes 

 short-stalked. Thickets and meadows E. 



m. ANEMONELLA Spach. (SYNDESMON) 



Small, perennial herbs. Leaves compound, smooth, the 

 basal ones long-petioled, those of the stem sessile. Flowers 

 in a terminal umbel, slender-pediceled. Sepals petal-like. 

 Petals none. Pistils 415 ; stigmas sessile, truncate.* 



1. A. thalictroides Spach. RUE ANEMONE. Stem slender, 6-10 in. 

 high, from a cluster of tuberous roots. Basal leaves long-petioled, 

 twice compound in threes ; leaflets oval, heart-shaped, 3-5-lobed. 

 Stem leaves 2-3 compound in threes, whorled, the long-stalked leaf- 

 lets veiny, forming an involucre of 6-9 apparently simple leaves. 

 Flowers 3-6 in an umbel, -f in. wide ; sepals 6-10, white. In rich 

 woods.* 



IV. HEPATICA Hill 



Involucre of 3 small, simple leaves, so close to the flower as 

 to look like a calyx. Leaves all basal, 3-lobed, heart-shaped, 

 thick, and evergreen, purplish-red beneath. Flowers single, 

 on rather slender hairy scapes. 



1. H. triloba Chaix. ROUND-LOBED HEPATICA. Lobes of the 

 leaves obtuse or rounded ; those of the involucre obtuse ; sepals 

 6-12, varying from blue to white. 



2. H. acutiloba DC. SHARP-LOBED HEPATICA. Closely similar to 

 the former, except for the acute lobes of the leaves and tips of the 

 involucre. 



[Both species have many local names, such as Liverleaf, Liverwort, 

 Noble Liverwort, Spring Beauty.] 



