. The British rust fungi (Uredinales) their biology and classification. Rust fungi. Fig. 155. P. Pi-uni-spinosae. jEcidia on A. coronaria (slightly reduced); a, an SEcidium on A. nemorosa, York- shire, the normal form, and J, two less usual forms, x Fig. 156. P. Pruni-spinosae. Two teleutospores; a, lower half of a teleuto- spore; 6, uredospore; c, paraphysis; d, a cluster of teleutospores. On Wild Plum. (All x600, except d, which is x360.) verrucose or echinulate, pale-brown, 20—35 x 10—18 fi (with three or four equatorial germ-pores, Arthur), mixed with yellowish-brown or pale capitate

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. The British rust fungi (Uredinales) their biology and classification. Rust fungi. Fig. 155. P. Pi-uni-spinosae. jEcidia on A. coronaria (slightly reduced); a, an SEcidium on A. nemorosa, York- shire, the normal form, and J, two less usual forms, x Fig. 156. P. Pruni-spinosae. Two teleutospores; a, lower half of a teleuto- spore; 6, uredospore; c, paraphysis; d, a cluster of teleutospores. On Wild Plum. (All x600, except d, which is x360.) verrucose or echinulate, pale-brown, 20—35 x 10—18 fi (with three or four equatorial germ-pores, Arthur), mixed with yellowish-brown or pale capitate paraphyses more or less thickened at the 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 Grove, W. B. (William Bywater), 1848-1938. Cambridge, University Press

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Keywords: ., bookcentury1900, bookdecade1910, bookpublishercambr, bookyear1913