368 MINNESOTA BOTANICAL STUDIES. 



Results of the survey. The botanical survey of this part of 

 the state was undertaken with a great deal of interest by the 

 collectors. Never before has this region been explored for the 

 purpose of botanical collection. Great opportunities were there- 

 fore offered in the search for species, which may have made 

 this corner of the state the northern limit of their range and for 

 those which may have strayed down the Mississippi river from 

 their native home at its headwaters. With such possibilities in 

 view the collectors were not disappointed with the results. 



As a result of the survey 578 species of plants were collected, 

 26 of which are Pteridophyta, 5 Archispermas, 87 Monocotyle- 

 dons and 460 Dicotyledons. 



In the catalogue of species are reported the following plants 

 which either have not been previously reported from Minnesota 

 or have been reported without any known authentic collection. 

 The specimens have been placed in the Herbarium of the Uni- 

 versity. 



Allionia linear is ,\ Hicracium umbellatumjt 



Asplenium angustifolium, Meibomia illinoensis, 



J3idens comosa,* JVaias guadalupensis, 



Car ex torta^ Primus nigra, 



CratcBgus macracantha, J^tiercus -prinoides, 



Falcata pitcheri, * Rudbeckia triloba, 



Gleditsia triacanthos, Sanicula trifoliata, 



Helianthus atrorubens^ Senecio plattensis.* 



The following plants collected are of great interest as rare 

 plants in the state or in this part of the state. 



Arctostaphylos uva-urst, Gaura biennis, 



Asclepias obtusifolia, Hamamelis virginiana, 



Azolla caroliniana, Hydrocotyle americana, 



Betula lenta, Jtmiperus sabina, 



Carex lurida^ Lactuca ludoviciana, 



Cheilanthes gracilis, Lactuca sagittifolia, 



Crat<zgus punctata, Meibomia dillenii, 



Cyperus houghtoni, Polygonum tenue, 



Dasystoma grandijlora, Polygonum virginianum, 



Dryopteris goldieana, ^iiercus platanoides, 



* Previously collected but not reported from Minnesota. 



t Previously reported from incorrect determinations or from general distri- 

 bution ranges given in large manuals without authentic collection. 



