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 Archisperme, 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 linearis, t fTieractum umbellatum,t 
Asplenium angustifolium, Metbomia tllinoenszs, 
Bidens comosa,* Naas guadalupensts, 
Carex torta, Prunus niga, 
Crategus macracantha, Quercus prinoides, 
Falcata pitcheri,* Rudbeckia tritloba, 
Gleditsia triacanthos, Sanicula trifoliata, 
FHlelianthus 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, FHlamamelis virginiana, 
Azolla caroliniana, flydrocotyle americana, 
Betula lenta, Juniperus sabina, 
Carex lurida, Lactuca ludoviciana, 
Cheilanthes gracilis, Lactuca sagittifolia, 
Crategus punctata, Metbomia dilleniz, 
Cyperus houghtont, Polygonum tenue, 
Dasystoma grandifiora, Polygonum virginianum, 
Dryopteris goldieana, Quercus platanordes, 
* Previously collected but not reported from Minnesota. 
+ Previously reported from incorrect determinations or from general distri- 
bution ranges given in large manuals without authentic collection. 
