Repository: UIHistories Project: Board of Trustees Minutes - 1884 [PAGE 143]

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147 The distribution of the secidia is decidedly different from that of Mcidium asperiflolii, Pers., as described, as well as the specimens at hand, and similarly different from, those named Mcidium lycopsidis, Desv., M. lithospermii, Thum, and M. symphyti, Thiim. The three last are made synomyms of the first by Winter and all are said to be the Mcidia of Vaccinia rubigo-vera. The latter is common in Illinois in wide areas where Myosotis does not occur, and no other species of Borraginacece has been observed infested with Mcidium. M. hydrophylli, Pk. Hypophyllous; spots conspicuous, distinct, yellowish; secidia subcircinate, short, recurved border rather wide and deeply divided; spores subglobose, epispore thin, smooth or nearly so, 18-21 //; spermogonia numerous, scattered over the central area of the spot above. On Hydrophyllum appendiculatum. M, polemomi, Pk. Hypophyllous; spots usually distinct, yellowish brown, border effused; secidia irregularly clustered, usually about a free central area, short, recurved border wide and rather coarsely divided; spores subglobose or elliptical,, often angular, epispore thick, conspicuously tuberculate, 18-21 by 21-25 n; spermogonia few, central on both surfaces. On Polemonium reptans and Phlox pilosa. M. solani, Mont. Hypogenous; secidia uniformly, usually densely, distributed in patches on the leaf surface, short, friable, soon becoming pulverulent; spores subglobose or elliptical, often angular, epispore rather thick, obscurely tuberculate, 13-15 by 15-21 ,«; spermogonia very abundant, hypophyllous, scattered over extended patches with or without secidia, comparatively large, honey-yellow. On Physalis viscosa, Champaign, T. J. Burrill. There is a Puccinia physalidis, Pk., from Colorado, of which the above may be the secidium form. But so far as known the Puccinia has not been collected east of the Mississippi.

M. apocyni, Schw. ? Undeveloped. On Apocynum

cannabinum.

M. Jamesianum, Pk. Amphigenous, on the leaves more abundant beneath; spots circular, distinct or often confluent, on the leaves somewhat and on the stems much swollen; secidia subcircinate or irregularly crowded, short, pseudoperidium fragile, soon becoming pulverulent; spores