On a new rust fungus parasitic on pea
1955 Volume 19 Issue 3-4 Pages 137-140
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1955 Volume 19 Issue 3-4 Pages 137-140
In this paper, the writers describe a new rust fungus parasitic on pea, which was collected in Hidaka, Hokkaido.
Uromyces Hidakaensis Murayama et Takeuchi, sp. nov.
Pycnidiis ignotis; aecidiis hypophyllis, rarius epiphyllis, aggregatis vel solitariis usque 2.5mm diam., saepe etiam in nervos et petiola elongatos evolutis, maculis orbicularibus vel ellipticis, 1∼3.5mm diam., flavidis insidentibus, cupulatis, ca. 220∼300μ diam., 100∼170μ altis, margine albido recurvato, laciniato; cellulis peridii firme conjunctis, polygonalibus vel rhomboideis, 19∼26×17∼22μ, pariete exteriore striato, 5∼10μ, interiore verrucoso 5∼7μ crasso; sporis angula-toglobosis, subglobosis vel ellipsoideis, minute verruculosis, subhyalinis, 14∼21×10∼18μ, episporio ca. 1μ crasso.
Soris uredosporiferis amphigenis et petiolicolis, plerumque hypophyllis, sparsis vel aggregatis, minutis, rotundatis, primo epidermide tectis, dein nudis, interdum confluentibus, pulverulentis, brunneis; uredosporis globosis, subglobosis, ellipsoideis vel obovatis, echinulatis, brunneis vel flavobrunneis, 20∼28×19∼25μ, episporio 1.5∼2μ crasso, poris germinationis 2∼5, plerumque 3∼4 sparsis praeditis.
Soris teleutosporiferis amphigenis vel petiolicolis, plerumque hypophyllis, sparsis vel aggregatis, minutis, rotundatis vel ellipticis, confluendo subinde majoribus, raro circinatim dispositis, primo epidermide tectis, dein ea fissa cinctis, pulverulentis, brunneis vel atro-brunneis; teleutosporis globosis, subglobosis, obovatis vel ellipsoideis, apice rotundatis, papilla hyalina praeditis, irregulariter verruculosis, brunneis, 20∼30×17∼22μ, episporio 1.5∼2μ crasso, pedicello hyalino, brevi, deciduo.
Hab. in foliis petiolisque vivis Pisi sativi L. (Endo) Higashi-Shizunai, Prov. Hidaka (Shoshiro TAKEUCHI, 20, 24, 30 Julio et 3, 8, Aug. 1950; 9 Julio 1951-typus; 6 Julio 1952.
