294 
Journal of Agricultural Research 
Vol. VII, No. 6 
Table II .—New host plants of Thielavia hasicola 
Host plant. 
Suscepti¬ 
bility. 
Host plant. 
Suscepti¬ 
bility. 
i. Beguminosae: 
A rachis hypogaea . 
Astragalus sinicus . 
Cassia chamaecrista . 
Cytisus scoparius . 
Desmodium tortuosum .. 
Dolichos lab lab . 
Galactia sp. 
Glycine kispida .. 
Lens esculenta . 
Lespedeza striata . 
Lotus corniculatus . 
Lotus villostis . 
Lupinus hirsutus . ..... 
Medicago denticulata .... 
Melilotus alba . 
Melilotus indica . 
Ornithopsus sativus . 
Onobrychis viciaefolia ... 
Pkaseolus acutifolius . .. 
Robinia pseudoacacia ... 
Sclotis chinensis . 
Strophostyles helvola. ... 
Trif o Hum incarnatum. . 
Trigonellafoenum-graecum 
Tephrosia virginiana .,.. 
Ulex europaeus . 
Vida villosa . 
Host plant. 
Medium* 
Bo. 2. 
Bo. 
Bow. 
Slight. 
Bo. 
Bow. 
Bo. 
Medium. 
Bow. 
Bo. 
Bo. 
Medium. 
Bow. 
Bo. 
Medium. 
Bow. 
Slight. 
Medium. 
Bo. 
Bow. 
Medium. 
Bo. 
Bow. 
Bo. 
Slight. 
Bo. 
Suscepti¬ 
bility. 
Beguminosae—Continued: 
Viciafaba . 
Solanaceae: 
Datura metel . 
Datura stramonium . 
Datura tatula . 
Datura cornucopia . 
Nicoiiana glauca (Gratz).. 
Nicotiana silvestris (Speg.) 
Nicoiiana sanderae (San¬ 
der.) 
Nicoiiana repanda (Willd.) 
Nicotiana atropurpurea ... 
Nicotiana langsdorffii 
(Weinm.) 
Nicotiana chinensis (Fisch) 
Nicoiiana macrophylla 
(Behm.) 
Nicotiana glutinosa (Binn.) 
Nicotiana calydflora a ... . 
Nicotiana latterrima (Mill.) 
Nicotiana alta (Bink and 
Otto). 
Nicotiana angusiifolia 
(R. and P.) 
Nicotiana longiflora (Cav.) 
Petunia ( hybridia ?). 
Solanum carolinense . 
Host plant. 
Slight. 
Medium. 
Bow. 
Slight. 
Bo. 
Bow. 
Medium. 
Bow. 
Bo. 
High. 
Bow. 
High. 
Bow. 
High. 
Medium. 
High. 
Medium. 
Bo. 
Bow. 
Slight. 
Bo. 
Suscepti¬ 
bility. 
3. Cucurbitaceae: 
Cucurbita maxima .... 
Cucurbita pepo . 
Cucumis melo . ...... 
Cucumis sativus . 
Cucurbita moschata . . 
Cucumis acutangulus. 
* Cucumisflexuosus... . 
4. Miscellaneous families: 
Viola tricolor . 
Begonia semperflorens. 
Bow. 
Bo. 
Bo. 
Slight. 
Bow. 
Bo. 
Bo. 
Slight. 
Bo. 
4 
. Miscellaneous families— 
Continued: 
Nemophilia aurita . 
Nemophilia insignis . 
Linaria cymbalaria . 
Linaria maroccana . 
Paphiopedilum grossianum 
Portulaca oleracea . 
Ipomoea coccinea . 
Phlox drummondii . 
Papaver nudicaule . 
Medium. 
Bow. 
Bo. 
Slight. 
Bo. 
Bow. 
•Slight. 
Bo. 
Bo. 
a The validity of these species may be questioned. 
Negative results have also been obtained with a number of species in 
the most susceptible families. In the legume family these apparently 
immune species may be represented by Phaseolus multiflorus y Vicia sativa, 
and Hedysarum coronarium. In the Solanaceae there are varieties at 
least of Capsicum annuum , Solanum melongena , Solanum tuberosum, 
Hyoscyamus niger, and certain species of Nicotiana which are apparently 
immune to attack. Benincasa cerifera is the only species of the cucurbit 
family tested, which appears to be entirely immune from infection by 
Thielavia hasicola when grown in infected soil. The common agricultural 
plants upon which infection could not be obtained were principally the 
