PLANTS FROM NORTH DAKOTA 187 
3 foliolata, plerumque 3-4 de apice eodem crescentia, petiolis 
15-30 cm. longis. Foliola 10-12 cm. longa et lata, suborbicularia 
vel rhombica, abrupte acuminata vel nonnumquam apice obtuse 
rotundato, subtruncata vel basi rotundata, valde membranacea, 
pallida et venis subtus pilosis, superne sparsim brevipila vel 
glabrata, marginibus ciliatis, parte dimidia superiore sinuato- 
dentatis vel crasse crenatis, interdum autem lobo fortuito parvo 
vestitis, praeterea integris, petiolulo folioli extremitatis 3-5 cm. 
longo, lateralium o.6—-1 cm. longis. Flores in paniculo axillari 
sparsi, 6-10 cm. longo, pedunculis 2 cm. longis et ramis inferioribus 
saepe perlongis. Fructus flavido-albidus, globularis, 4 vel 5 mm. 
diametro. 
Stem horizontal and subterranean with erect branches rising 
above the ground, each of them having the appearance of an 
individual plant, about 25 cm. high, the lower third of this being 
beneath the surface. These branches are marked with large pro- 
tuberances beneath the insertion of former leaves and woody, 
except their uppermost ends, about 2 cm. long, where the her- 
baceous parts of the season are crowded. It also not seldom happens 
that the seasonal growth takes place in a secondary branch to 
supplant the former. Leaves pinnately 3-foliolate, usually 3-4 
from the tops, their petioles 15-30 cm. long. Leaflets 10-12 cm. 
in length and width, suborbicular or rhombic in outline, abruptly 
acuminate or sometimes obtusely rounded at the apex, subtrun- 
cate or rounded at the base, very thin, pale and hairy on the 
veins of the lower surface, sparingly short-hairy or ‘glabrate on 
the upper side, with ciliate margins, on the upper half sinuately 
toothed or coarsely crenate, sometimes even with an occasional 
small lobe, else entire, petiololes of the end leaflet 3-5 cm. long 
and of the lateral ones 0.6—-1 cm. long. Flowers in sparse, axillary 
panicles which are 6-10 cm. long, with 2 cm. long peduncles and 
often quite long lower branches. Fruit yellowish—white, globular, 
4 or 5 mm. in diameter. 
This species is best recognized from its allies by its large, 
suborbicular leaflets. : 
Growing in dense wood-land with rich humus and dense 
shade, it was collected by the writer at Devil’s Lake, Ramsey 
County, on June 29, 1902, and July 1, 1905. Its leaflets resemble 
strikingly in size and outline the leaves of Fothergilla maior, hence 
the species name, 
