LIST OF ILLUSTRATIONS 
Figure 
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Formation of ascospores in Ergot—Claviceps purpurea........ , 
Heads of some grasses infected with Ergot—Claviceps purpurea 
Field Horsetail—Egquisetum arvense.........000 00. ce cece ee 
Bracken Fern—Pteris aquilina......0..00000 0000 ccc eve 
Skunk-tail Grass—Hordeum jubatum....000.000000 000 ccc ce 
Swamp Camas—Zygadenus elegans... 0.000... 0 00. c eee 
Common Lupine—Lupinus perennis...........000000.00004. 
False Hellebore—Veratrum viride........00000 00 ccc eee 
Larkspur—Delphinium sp.....0 00000 eee 
Monkshood—A conitum napellus.....000 000 
Wild Black Cherry—Prunus serotina............0.0000000004. 
Stemless Loco Weed—Oxytropis Lambertt..........0.00.00.0.4.. 
Flower of Stemless Loco Weed.................000000 00000. 
(a) Mountain Laurel—Kalmia latifolia; (b) Pale Laurel—Kalmia 
POLS ONG dee rcs 28a asda eas cua GLO PONG arf kal ele Gaeta aca 
Water Hemlock—Cicuta maculata... 0.0.00 00 000. ee 
Ragwort—Senecio Jacobaed.... 0... cece ee 
White Snakeroot—Eupaiorium urticaefolium..........0..0... 
Grains of Darnel—Loliuwm temulentum............000002200.. 
Purple Cockle—A grostemma Githago............. 0.0... cane 
Seeds of Cow Cockle—Saponaria Vaccaria................... 
Seeds of Wild Mustard—Brassica arvensis. .........00000000. 
Seeds of Tumbling Mustard—Sisymbrium altissimum......... 
Seeds of Field Pennycress—Thlaspt arvense.................. 
Seeds of Wormseed Mustard—Erysimum cheiranthoides........ 
Seeds and broken pods of Wild Radish—Raphanus Raphant- 
Death Cup—Amantta phalloides.... 0... 00.000 
Fly Agaric—A manita muscaria... 0.000660 
Jack-in-the-Pulpit—A risaema triphyllum.... 00.00.0060 
Showy Lady-slipper—Cypripedium hirsutum. ........ 0.000006 
Slender Nettle—Urtica gracilis. ...... 606. 
Pokeweed—Phytolacca decandra.. 1... 1.00. cee 
