UrcdhmU'fi oj hidUuKi. III. 177 



.Ml. Vernoii, Posey Co.. .Miiy II. l'.n<;: C.viil lii.in.i. I'oscy ("o., .fiily IT. 

 r.MS, comm. E. P. Melborii. 



The latter collection w.is sccuimmI lidiii .1 specimen of the urass wliich 

 was sent to the Botanical 1 >ci>ailiiH'iil dl' llio Purdue University A>,'ricul- 

 tiii'al Experiment Station for identilicarnni. Tlie nist is a soiitlicin one 

 ;in(l occurs also on Fcstitra ncloftoni. liaviiii: a ranse from Indiana and 

 .Nebraska to Mississippi and Texas. 



The aecial stage has l»een shown I liioni;!! licld cnllures hy I.onii^ ami 

 .ureenhonse cultures Ity Arthur to he «in .\ol hoscoriHinn binilrc ( .Mycolni^da 

 8:139-140. 1010) and should also ho found in southern Indiana. 



1C.7. Ukomyces pouosrs (Pk.) .lackson. Brooklyn I'.ot. (Jard. .Mem. 1 :L'S1 

 1918. 

 Aecidium porostim Pk. P>ot. (Jaz. 3 :-'!4. 1S7S. 

 TJromyces coloradcnms E. & E. Erytiiea 1:204. IS!):!. 

 UromycopHis porosa Arth. Kesult. Sci. Connr. I'.ot. Viennc :\\Tt. lOOO. 



I On VICIA AMERICANA Muill.. 



One mile east of Christman. Porter Co.. .lune :;. 1010. C. c. Deam L'OOr.O. 



This is an autoecious rust possessiuir aecia and telia only. It is a west- 

 ern form, the pi*esent collection hein.ir tiie most eastern one known. Tlie 

 ai'cia are from a distrihutiMJ niyceliuni and lience easily .separateil from 

 the more common V. Faha< . which occurs on tlie same host. 



Host Index. 



Each species is given a number and these are consecutive for the three 

 papers. The 1915 list includes nos. 1-141 : the 1917 list nos. 142-l.'i5 and the 

 present list nos. 156-167. In the lirst part of the present list the numbers 

 refer to the same species as in the 1015 and 1917 lists. Numbers in black 

 faced type indicate that the host is mentioned in the present paper. Num- 

 bers in ordinary type indicate that the host is mentioned only in one of the 

 t\A'0 previous papers. Synonyms are in italics. 



Afzelia macrophylla 38 

 Agastache nepetoides 32 

 .Xgrimonia Eiipaloria 15 



hirsuta 15 



mollis 15 



parviflora 15 



rostellata 15 

 Agropyron repens 51, 81 



Smithii 51 

 Agrostis alba 81 



perennans 67 

 Aletris farinosa 41 

 Alopecurus aristulatus 81, 86 



geniculatus 59 

 Althaea rosea 34 

 Ambrosia trifida 40, 48 

 Amelanchier laevis x humilis 102 



Amorpha canescens 141 

 Anchistea virginica 157 

 Andropogon furcatus 42, 85 



HCopariuH 42, 57. 85 

 Anemone cylindrlca 28 



quinquefolia 36, 135, 139 



virginiana 28, 51 

 Antirrhinum majus 44 

 Apocynum cannabinum 19 

 Aquilegia sp. 51 

 Arctium Lappa 21 



minus 21 

 Arisaema Dracontium 109 



triphyllum 109 

 Aristida gracilis 119 



oligantha 149 



ramosissima 149 



