1917] Fernald,— Color Forms of Anemones 139 
This plant is generally called in horticulture R. repens, var. flore- 
pleno but the latter name (if it can be accepted as a valid name) 
belongs to the double-flowered European form of R. repens with the 
bases of the leaflets cuneate to subtruncate, as in true R. repens, and 
the teeth and segments elongate and subacute to acuminate. The 
history of var. pleniflorus is obscure. It is found in old gardens and 
as a somewhat naturalized weed in eastern America; but such illus- 
trations of the double-flowered R. repens of Europe as the writer has 
seen, as far back as Gerard’s Herball (ed Johnson, 1633), where the 
plant is figured as Ranunculus dulcis, multiplex, and Besler’s Hortus 
Eystettensis (1613) where it is called Ranunculus hortensis, multiflorus, 
show the characteristically cuneate-based leaflets of R. repens. 
III. SOME COLOR FORMS OF AMERICAN ANEMONES. 
ANEMONE RIPARIA Fernald. This northern riverbank and shore 
species differs constantly from the more southern A. virginiana in 
several characters as well as its northern range and very early flowering 
season (from May to July). Contrasted with A. virginiana it has the 
leaf-segments usually more cuneate at base, although this character 
is by no means absolute; anthers 0.7—1.2 mm. long, those of the more 
southern A. virginiana running from 1.2-1.6 mm. long; its fruiting 
head 7-11 mm. thick, as contrasted with A. virginiana in which the 
heads are 1.2-1.5 em. thick; and the subulate pale styles ascending 
or subascending in fruit, as contrasted with the firmer, more divergent 
styles of A. virginiana. The two species are sometimes confused in 
flower owing to the fact that each presents a distinctly sepaloid or a 
pronouncedly petaloid perianth. A. riparia, in fact, appears in three 
well pronounced forms as follows: 
. RIPARIA Fernald, Ruopora, i. 51, t. 3. (1899), typical form.— 
ee petaloid, white; at least the inner broadly oblong to oval, with 
rounded tips, 1.3-2 cm. long, 0.8-1.5 em. broad.— Dileareias or 
slaty Fh ‘rarely in swamps, Gaspé County, Quebec, to British 
Columbia, ong to Cape Breton and Pictou County, Nova Scotia, 
King’s County, New ame: central Maine, Franklin County, 
Mincchoate: ‘northern Fairfield County, Connecticut, Sullivan and 
Tompkins Counties, New York, northern Illinois, Minnescta, etce.— 
Flowers late May to July. 
Forma rhodantha, sepalis rubris. 
