RYDBERG: STUDIES ON THE Rocky MounrTAIN FLORA 319 
’ Wahlbergella Kingii (S. Wats.) Rydb. comb. nov. 
Lychnis Kingti S. Wats. Proc. Am. Acad. 12: 247. 1877. 
‘Wahlbergella attenuata (Farr) Rydb. comb. nov. 
Lychnis attenuata Farr, Contr. Bot. Lab. Univ. Pa. 2: 419. 1904. 
- Wahlbergella Parryi (S. Wats.) Rydb. comb. nov. 
Lychnis Parryi S, Wats. Proc. Am. Acad. 12: 248. 1877. 
WAHLBERGELLA APETALA (L.) Fries, Summa Veg. Scand. 155. 1845 
Lychnis apetala L. Sp. Pl. 1: 437. 1753. 
Melandryum apetalum Fenzl; in Ledeb. Fl. Ross. 1: 326. 1842. 
Wahlbergella uniflora F ries, Bot. Not. 1843: 143. 1843. 
RANUNCULACEAE 
* Ranunculus rivularis sp. nov. 
Ranunculus repens S. Wats. Bot. King Exp.g. 1871. 
A perennial with a fascicle of fibrous roots; stem hirsute, pro- 
ducing long stolons sometimes over I m. long, rooting at the 
nodes and there producing plantlets; leaves ternate, 5-15 cm. 
wide, divisions petiolate, ovate, usually truncate or subcordate at 
the base, 3-cleft and coarsely toothed; petals rounded-obovate, 
about 4 mm. long, scarcely equalling the sepals; head of fruit 
globose; achenes glabrous, beaks about one third their length. 
; The type was determined as R. repens L. by Dr. Watson, but 
'S Not so closely related to that species as to R. Macounti Britton. 
It was probably on account of the creeping and rooting habit 
that it was referred to the former. The small petals should at a 
glance have revealed the error, for in R. repens the petals are 
large and rounded, much exceeding the sepals. R. Macounii is 
Secasionally decumbent but not rooting, and the outline of the 
leaflets or divisions is different and the beak about one half as 
long as the body of the achenes. My own specimens from Kimball, 
reg had stems over 1 m. long. It grows on wet river 
NkKs, 
Nevapa: Huntington Valley, August 1868, S. Watson 27 
type, in herb. Columbia University). 
Arizona: Clark Valley, August 1883, Rusby. 
EBRASKA: Kimball, August 12, 1891, Rydberg 7. 
TEXas: 1851, Wright 839. 
