-162 FLORA OF WINNESHIEK COUNTY. 
(from Betula lenta), Salicin (from all the species of Populus 
and the larger species of Salix), Ulmus(Ulmus fulva), Vibur- 
num (Viburnum opulus), Viburnum Prunifolium (Viburnum 
prunifolium), Quercus (Quercus alba), Prunus Virginiana 
(Prunus serotina and virginiana), and Xanthoxylum (Xanthoay- 
lum americanum). ; 
8. Bark of root.—EKuonymus (Euonymus atropurpureus), 
Juglans (Juglans cinerea) and Rubus (Rubus nigrobaccus and 
procumbens). 
9. Root—Apocynum (Apocynum cannabinum), Asclepias 
(Asclepias tuberosa) and Senega (Polygala senega). 
10. Rhizome  (rootstock)—Calamus (Acorus calamus), 
Caulophyllum (Caulophyllum thalictroides), Cypripedium (Cy- 
pripedium hirsutum and parviflorum), Geranium (Geranium 
maculatum), Hydrastis (Hydrastis canadensis), Iris (Iris ver- 
sicolor), Leptandra (Leptandra virginica), Menispermum 
(Menispermum canadense), Podophyllum (Podophyllum pelta- 
tum) and Sanguinaria (Sanguwinaria canadensis). 
The common names of all the medicinal plants are given in 
the annotated list. 
VI. Systematic Annotated List of Plants. 
In the following list no attempt is made to define species, 
as this is not necessary in view of the number of available des- 
‘eriptive manuals. Brief notes upon distribution, habits and 
abundance are given under each species, and locality names 
are given where specimens were preserved, or where a report 
was published. In case the record is not based on the writer’s 
own material the name of the collector or recorder follows 
in parenthesis. Messrs. Savage and Goddard did not publish 
lists, but the writer examined their material. In all other 
eases the published record is accepted. The scientific nomen- 
clature for the following plants is in the main that of Britton’s 
Manual,* for ferns that of the writer’s paper on Iowa Pterido- 
phyta,+ and for grasses that of Pammel’s ‘‘Grasses of Iowa.’’ 
These may not in all cases be entirely satisfactory, but they are 
available to Iowa workers, and, moreover, the question of exact 
*Manual of theFlora of the Northern U. 8S. and Canada, by N L Britton, 2nd Ed. 
1905. ‘ 
2 Lab Nat. Hist., State Univ. of Iowa, Vol. V, 190), pp. 145-170. 
ore Geol. Sur. , part II, Sup. Report for 1903. 
