TWENTY-FIEST ANNUAL MEETING. 



85 



INDEX TO HOST PLANTS. 



[Obs. Br. indicates Bremia, Cy. Cystopus, Per. Peronospora, PI. Plasiuopara, Scl. 

 Sclerospora. The reference after each abbreviation of the generic name is to the 

 serial number of the species in the list.] 



Aiuarantus Cy. 5 



albiis Cy. 5 



lilitoiJes Cy. 5 



retroflexus Cy. 5 



Ambrosia Cy. 4, PI. 10 



aitemisiaefolia Cy. 4, PI. 10 



psilostachya Cy. 4, PI. 10 



trificla Cy. 4, PI. 10 



Aud rosace Per. 24 



oeciden talis Per. 25 



Artemisia Per. 23 



Ludoviciana Per. 23 



Astragalus Per. 22 



Canadensis Per. 22 



lotiUorus Per. 22 



Bidens PI. 10 



connata PI. 10 



frondosa PI. 10 



Brassica Cy. 1 



nigra Cy. 1 



Capsella Cy. 1 



Biirsa-pastoris Cy. 1 



Chenopodium Per. 29 



album, var. viride Per. 29 



Corydalis Per. 18 



aiirea, var. occidentalis Per. 18 



Draba Cy. 1, Per. 19 



Caroliniana Cy. 1, Per. 19 



Echinocystis PI. 9 



lobata PL 9 



Echinospermum Per. 21 



Redowsliii, var. ctipiilatum Per. 21 



Eiipatorium PI. 10 



ageratoides PI. 10 



Eupliorbia Per. 31 



glyptosperma Per. 31 



hyperici folia Per. 31 



uiaciilata Per. 31 



serpens Per. 31 



Gaura Per. 16 



parvi flora Per. 16 



Geranium PI. 7 



Caroiinianum PI. 7 



Geum Per. 20 



album Per. 20 



Hedeoma Per. 27 



hispida Per. 27 



Heliantbus PI. 10 



annuus PI. 10 



grosse-serratus PI. 10 



doronicoides PI. 10 



tracheliifjlius PI. 10 



Ipomoea Cy. 2 



hederacea Cy. 2 



lacuuosa Cy. 2 



leptophylla Cy. 2 



pandurata Cy. 



Iva Cy. 4, PI. 



ciliata Cy. 



xanthiifolia PI. 



Latuca Br. 



Canadensis ,. Br. 



Lepidium Cy. 1, Per. 



intermedium Cy. 1, Per. 



Virginicum Cy. 1, Per. 



Linum Per. 



sulcatum Per. 



Nasturtium Cy. 



Armoracia Cy. 



sessiliflorum Cy. 



CEnottiera Per. 



biennis Per. 



sinuata Per. 



speciosa Per. 



Oxybaphus Per. 



nyctagineus Per. 



Portulaca Cy. 



oleracea Cy. 



Potentilla Per. 



Norvegica Per. 



Plantago Per. 



major Per. 



Polygonum Per. 



dumetorum, var. scandens Per. 



Raplianus Cy. 



sativus Cy. 



Salvia Per. 



lanceolata Per. 



Scrophularia Per. 



nodosa Per. 



Setaria Scl. 



Italica Scl. 



Italica, var. Germanica Scl. 



Sicyos PI. 



angulatas PI. 



Silene Per. 



antirrhina Per. 



Silphium PI. 



integrifolium PI. 



Sisymbrium Cy. i, Per. 



canescens Cy. 1, Per. 



officinale Cy. 



Vernonia PI. 



Baldwinii PI. 



Veronica Per. 



peregrina Per. 



Vicia Per. 



Americana, var. linearis Per. 



Vitis PI. 



riparia PI. 



sp. cult* PI. 



♦Varieties. — These are arranged alphabetically, and give in parenthesis the damage on a scale of 



