158 RYDBERG: STUDIES ON THE 
Colorado and Utah. All specimens referred here from higher lati- 
tudes belong to A. tenuiloba. 
- Ranunculus Utahensis 
Perennial with a cluster of fibrous fleshy roots, glabrous : stems 
1-2 dm. high, branched above; basal leaves petioled ; petioles 2— 
5 cm. long; blades almost orbicular, rather thick, crenate or round- 
lobed : stem-leaves sessile, deeply cleft or divided into 4—5 oblong 
or elliptic, obtuse segments: sepals somewhat hairy, elliptic to 
obovate, at last reflexed: petals 4-5 mm. long, exceeding the 
sepals: head of fruit oblong ; achenes glabrous; style rather short. 
This species resembles most a depauperate R. adortivus in the 
leaves, but the petals are much larger and the head of fruit is ob- 
long instead of spherical. It has gone under the name of R. affints 
var. /etocarpus, but it is not that of Trautvetter, and is distinguished 
from all of those species which have been included in R. affinis by 
its thicker leaves and their lobing. 
Urau: Alta, Wasatch Mts., 1879, IZ. £. Jones, 1130 (type in 
herb. Columbia University) ; Uinta Mts., 1873, Z: C. Porter. 
“Ranunculus micropetalus (Greene) 
Ranunculus affinis var. micropetalus Greene, Pittonia, 2: 110. 
1890. 
An excellent species, very distinct from R. afinis Hook., and still 
more from R. cardiophyllus Hook., with which Davis associated it. 
/ Ranunculus Helleri 
Perennial with a short rootstock, perfectly glabrous: stem 
slender, 1-2 dm. high: basal leaves and lower cauline with slen- 
der petioles 2-5 cm. long; blades of the earlier basal leaves rent- 
form, 3-cleft 24 or 34 the distance to the base; middle division 
oblong, entire, the lateral ones with 3 ovate lobes ; blades of the 
other basal leaves and the lower cauline divided to near the base 
into 3 cuneate divisions, 15-20 mm. long; the middle division 3- 
lobed, the lateral ones 4-lobed ; stipules of lower cauline leaves 
conspicuous, rounded: upper cauline leaves sessile, divided unto 
the base into 2~4 linear-oblong divisions: flowers solitary : sepals 
oblong, obtuse, about 5 mm. long: petals oblong to obovate, 
golden yellow, 6-7 mm. long: head of fruit short-oblong - 
spherical : achenes turgid, almost spherical, 1.5 mm. long, g1a- 
brous : style slender and curved. 
This species is nearest related to R. Eschschotsit and R. alpeo- 
