. A manual of poisonous plants, chiefly of eastern North America, with brief notes on economic and medicinal plants, and numerous illustrations. Poisonous plants. 228 MANUAL OF POISONOUS PLANTS surrounded by paraphyses. Spores with short pedicels, mostly club-shaped, unsymmetrical; apex somewhat truncate, or with one or two projections. Distribution. Common in Europe and probably also m this country; has usually been referred to as Puccinia rubigo-vera. In European mycological works, the aecidium of this fungus is said to be very common on common speedwell (Lithospermum arvense), Bchium vulgar
. A manual of poisonous plants, chiefly of eastern North America, with brief notes on economic and medicinal plants, and numerous illustrations. Poisonous plants. 228 MANUAL OF POISONOUS PLANTS surrounded by paraphyses. Spores with short pedicels, mostly club-shaped, unsymmetrical; apex somewhat truncate, or with one or two projections. Distribution. Common in Europe and probably also m this country; has usually been referred to as Puccinia rubigo-vera. In European mycological works, the aecidium of this fungus is said to be very common on common speedwell (Lithospermum arvense), Bchium vulgare, and Anchusa Fig. 64. Forms of rust on cereals. A. Common wheat rust, Puccinia gramims on- sheath of wheat, winter spores germinating. B. The same, sporidia sp. C. Epidemw* under surface of leaf with sporidium, sp. and germ tube. i. penetrating the epidermis.^ D. Uredospore germinating after being in water 14 hours in E. Puccinia rubigo-vera germinat- ing. F. Puccinia graminis. Both cells have germinated, a, sporidium germinating, magni- fied X 600. G. Crowned rust (P. coronata) from oat leaf; G after BoUeyj the remainder, Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Pammel, L. H. (Louis Hermann), 1862-1931. Cedar Rapids, Ia. , The Torch Press
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