PLATE III. 



Each magnified about 5 diameters. 



No. 1 Potentilla Monspeliensis L Tall Fivefinger, 4 seeds. 



2 Trifolium repens L White Clover, 4 seeds. 



3 Trifolium hybridum L Alsike Clover, 4 seeds. 



4 Trifolium pratense L Red Clover, 4 seeds. 



5 Trifolium incarnatum L Crimson Clover, 4 seeds. 



6 Medicago lupulina L Yellow Trefoil, Black Medick,4 seeds — 1 with 



7 Medicago saliva L Alfalfa, 4 seeds. [covering 



8 Onobrychis saliva Lam Sainfoin, 2 seeds— 1 with covering-. 



9 Ornithopus salivus Brot Serradella, 2 seeds— 1 with covering-. 



10 Lotus corniculatus L Bird's-foot Trefoil, 2 seeds. 



11 Coronilla scorpioides L Axseed, 2 seeds. 



12 Cuscuta arvensis Beyr.. Field Dodder, 4 seeds. 



13 Cuscuta Epitkymum Murr Clover Dodder, 4 seeds. 



14 Geranium Carolinianum L Crane's-bill. 4 seeds. 



15 Euphorbia nutans Lag Spurge, 4 seeds. 



16 Euphorbia maculata L Spotted Spurge, 2 seeds. 



17 Acalypha Virginica L Three-seeded Mercury, 4 seeds. 



18 Malva rotundifolia L Low Mallow, 4 seeds. 



19 Hibiscus Trionum L, Bladder-ketmia, 4 seeds. 



20 Abutilon Abutilon (L) Rusby Indian Mallow, 2 seeds. 



21 Sida spinosa L Prickly Sida, 2 seeds. 



22 Croton capitatus Michx Croton, Hogwort, 2 seeds. 



23 Onagra biettnis (L) Scop Evening Primrose, 2 seeds. 



24 Carum Carui L Caraway, 2 seeds. 



25 Daucus Car ota L ' Wild Carrot, 4 seeds. 



26 Pimpinella Saxifraga L Pimpernel, 2 seeds. 



27 Lithospermum arvense L Wheat-thief, 4 seeds. 



From original photographs by P. A. Hinman and "7. M. Van Hook. 



