372 . Prairie Flora 



Centunculus minimus. Another diminutive rock plant is Gratiola vir- 

 giniana growing in the shadow of rocks. Plantago purshii is very 

 common on dry ground near these rocks. Hedeoma hispida is com- 

 mon too growing on rocks, while Heuchera hispida grows on dry soil 

 near by. Arabis hirsuta as found on the rocks here is a plant of 

 considerable size. Isanthus hrachitus is a little plant blooming in the 

 crevices of rocks in July. Manillaria vivipara is found on granite 

 ledges near Ortonville. Its bright red flowers are very beautiful. 

 Opomeia fragilis is common on the rocks in all parts of the upper 

 Minnesota valley. Hosackia americana (lotus) is quite plentiful 

 around Big Stone lake and has been collected as far east as Monte- 

 video. Other plants of a western ranire collected at Montevideo are: 



Potentilla hippiana; Potentilla pennsylvanica strigosia Pursh.; 

 Potentilla pennsylvanica; Talinum parviflorum Pursh.; Houstonia 

 longifolia, common on the rocks; Polygonum tenue, also very common 

 on gneiss rocks, fruiting in September. Pernathes aspera Michx, is 

 frequent on rich bench lands near rocks. It is a stately looking plant 

 with a southwestern range. 



(S. The Bog Flora. 



There are few bogs in western Minnesota, consequently the list 

 of bog plants is short. Among the plants found about springs and in 

 wet places are: Epilobium coloratum, Muhl. ; Epilohium densum, 

 Raf. ; Epilohium adenocaulon, Mimulus glabratus Jamesii, Gray, found 

 in cold springs; Callitriche heterophylla, Pursh, collected in Spring 

 creek, near Montevideo; Gentiana procera, Holm., found in marshy 

 bogs near Glenwood. 



Lobelia kalmii, L. found in spring bogs in Pope county, Parnassia 

 caroliniana found in bogs around lake Minnewaska. 



Some of the names used in this paper have arv unfamiliar sound. 

 This is due to the action of the Vienna Congress in restoring to use 

 certain generic names that have not been used by American botanists 

 for many years. For the sake of uniformity it is likely that their 

 use will have to be acquiesced in. 



