397 



Potentilla ranunculoides Humb. & Bonp. ; Nestl. Monog. Pot. 

 56, of Mexico, belongs also to this group, differing from the North 

 American species by its large petals and very broad rounded leaf- 

 lets. 



Potentilla multisecta (Wats.). 



P. diversifolia multisecta Wats. King's Rep. 5 : 86. 1871. 



This was also included in P. dissecta by Watson. It is a proba- 

 bility that it is the original P. dissecta Pursh, the description of 

 which fits this, as well as P. Raminculus Lange, better than the 

 plant for which the name is used, viz. P. diversifolia Lehm. 

 From this, P. multisecta differs not only in the finely dissected 

 leaves, but also in the smaller flowers. The leaves are not truly 

 digitate, but the outer leaflets are attached a little lower, as in P. 

 dectirrens. All are divided into linear divisions. This species there- 

 fore connects the Aurcae with the Multijugae, especially with P. 

 piiiiiatisecta and P. millefolia. It ranges from Nevada to Montana 

 and Wyoming. 



A small group, nearly related to the Aureae, especially to 

 P. decurrens and P. imdtisecta, but with the leaves more or less 

 tomentulose beneath may be known as the Subj'iigae. The leaves 

 are at the same time digitate and pinnate, t. e., they are digitately 

 3-5-foliolate with a pair (in the last sometimes 2 pairs) of smaller 

 leaflets further down on the petiole. In this respect they resem- 

 ble P. pjilchella, from which the Snbjiigae differ in the style, which 

 is filiform. They are, all low and tufted, or cespitose, delicate 

 plants from Colorado, less than 2 dm. high, except the first, which 

 sometimes reaches 3 dm. It approaches in size and habit the 

 Gracilis group, /. r., P. gracilis and its varieties as understood by 

 Watson. Strangely, all four seem to be undescribed. 



Potentilla subjuga n. sp. 



Tufted from a perennial root; stems many, 1-3 dm. high, 

 silky-villous, few-leaved, rather divergently branched above, the 

 lower portion covered with the brown scarious lower stipules ; up- 

 per stipules green, ovate, entire. Basal leaves many, digitately 5- 

 (seldom 3-) foliolate with an additional pair of smaller leaflets on the 

 petiole, about i cm. below the others ; leaflets I-4 cm. long, oblong 

 or obovate, deeply incised into oblong rather obtuse segments, 

 silky and green above, silky and white-tomentose beneath ; stem- 



