1905] Robinson, A New Ranunculus 221 
limb orbicular or somewhat reniform 8 to 20 mm. long, 15 to 20 mm. 
wide, deeply 7—11-crenate, ciliate, green on both surfaces, scarcely 
paler beneath; petioles slender 3 to 7 cm. long; cauline leaves cleft 
almost to the base into 3 to 5 elliptical or lanceolate-oblong lobes ; 
their petioles short; the uppermost leaves subsessile, entire and 
lanceolate or 2-3-parted: peduncles villous, 1 to 6 cm. long: sepals 
5, Ovate, obtuse, somewhat petal-like yellowish or greenish purple, 
veiny, pale, villous, concave, 3 mm. long, spreading or slightly 
reflexed: petals 5, bright yellow obovate-suborbicular, entire, 5 
mm. long, 3 to 3.5 mm. wide; nectaries deep yellow, reversed 
triangular, truncate or retuse: stamens 12 to 20; filaments clavel- 
late, glabrous: styles filiform, recurved, the basal part persistent 
as a short hooked beak; achenes semi-obovate, slightly compressed, 
green, glabrous, 1.8 mm. long: receptacle ovoid-cylindrical, spread- 
ing-villous. 
GasPÉ COUNTY, QUEBEC: on flood plain of an alpine brook, north 
face of Mt. Albert, alt. 770 to 1100 m., 14 August, 1905, J. F. Collins 
& M. L. Fernald, no. 83 (type, in herb. Gray); by a rivulet on the 
side of Mt. Albert, alt. 550 m., 23 July, 1881, /. A. Allen. LABRADOR: 
Okkak, collected by the Moravian Brothers, the specimen confused 
with plants of Æ. pygmaeus Wahl.; Rama, 20-24 August, 1897, J. D. 
Sornborger, no. 189. 
So far as traced by the writer the plant, here described as Æ. 
Allenii, has been in the past treated as follows : — 
R. affinis var. leiocarpus J. Macoun, Cat. Pl. Canad. 18 (1883). 
K. affinis Robinson in Gray, Syn. Fl. i. pt. 1, 31, in foot-note (1895), 
not R. Br. 
X. pedatifidus Britton & Brown, Ill. Fl. ii. 77 (1897), as to plant 
of Quebec and Labrador, as to most of the characters given, and as 
to the habital sketch, but not, however, as to the achene figured, 
which from its pubescence is presumably that of Æ. pedatifidus J. E. 
Smith. 
By the distinctions already given Æ. A//enii can be readily sepa- 
rated from Æ. pedatifidus and from the typical form of A. affinis. 
Regarding Æ. affinis, var. leiocarpus Trautv., the difficulty is greater, 
owing to the extremely meager and unsatisfactory description of the 
Siberian plants. Trautvetter distinguishes his variety solely on its 
smooth achenes and in this character it would accord well enough 
with the plant of northeastern America, but he further divides the 
variety into two forms, the first with petals twice longer than the 
suborbicular sepals and the second with petals somewhat shorter 
than the oblong-elliptical sepals. Neither of these brief character- 
