158 AMERICAN MIDLAND NATURALIST 
plissima, 2-4 (plerumque 3), inferiora petiolis 4-10 cm. longis, 
summum petiolo brevi, saepe 0.5 cm. solum longo ornatum vel 
etiam sessile. Foliola luxuriosa tertianos quoque lobos gerentes, 
specie minus glauca vel superne omnino viridia, in plantis juvenibus 
non florescentibus saepe amplissima. Achenia oblique oblongo- 
elliptica, matura 6-7 mm. longa. Mares floribus copiosioribus et 
inflorescentia quam feminarum ampliore abundant. 
Stems from one to two tufts of numerous fibrous, fleshy roots 
running horizontally or vertically often 1-3 dm. before emerging 
from the ground, as in the species, solitary or several, branching 
from the axils in robust plants, else simple. Leaves very ample, 2—4 
(mostly 3), the lower with petioles 4-10 cm. long, the uppermost 
leaf with very short, often only 0.5 cm. long petiole, or even sessile. 
Leaflets, when well developed, bearing even tertiary lobes, less 
glaucous than the species or the upper surface perfectly green, 
often of a remarkable size in young, non-flowering plants. Achenes 
obliquely oblong-elliptic, when well developed 6-7 mm. long, and 
if extremely well matured becoming quite plump and approx- 
imating the ovoid outline. The staminate plants with considerably 
more flowers and ampler inflorescence than the pistillate. 
This magnificent variety is an inhabitant of the woodland, 
growing both in deep shade and in open woods, always exclusively 
in rich humus. It seldom fails to appear where these conditions 
prevail. It has been collected by the writer on the peninsula of 
Lake Ibsen and at Pleasant Lake, around Devil’s Lake and in 
the Turtle Mountains, and I have exchange material in my her- 
barium proving that it has been found also in the southern parts 
of the state. 
Lacinaria scariosa subcorymbosa var. nov. 
Planta amplitudine media, circa 2.5 dm. alta; inflorescentia 
brevis, circiter 6 cm. longa, paucicapitata (typicarum capitulis 6), 
subcorymbosa. 
This is a middle-sized plant, about 2.5 dm. high, with a short 
inflorescence, about 6 cm. long, and few heads (in the type plants 
6), subcorynibosely arranged. 
This variety, belonging to group I, is easily distinguished 
from var. corymbulosa Sheldon, which has a many-headed, 
protracted inflorescence on a tall stem, and from my var. sub- 
cymosa, which has petioled leaves of the upper series. 
