. British oak galls. Galls (Botany). Fig. 13.—Sectional asj^ects of gall caused by Dryophanta longiventris. A. Cross section, b. Longitudinal section, c. Transverse section. All X 2. Dele, ad nat. is the number of pale-coloured papillae scattered all over its surface, which frequently coalesce and form ridges extending from side to side, and also in concen- tric and circular outlines. The depressed portions of the gall are pink and red; colours which are accentuated by the pale yellow of the papillae, and which do not entirely disappear even when the gall is past maturit}^ The shape is gl
. British oak galls. Galls (Botany). Fig. 13.—Sectional asj^ects of gall caused by Dryophanta longiventris. A. Cross section, b. Longitudinal section, c. Transverse section. All X 2. Dele, ad nat. is the number of pale-coloured papillae scattered all over its surface, which frequently coalesce and form ridges extending from side to side, and also in concen- tric and circular outlines. The depressed portions of the gall are pink and red; colours which are accentuated by the pale yellow of the papillae, and which do not entirely disappear even when the gall is past maturit}^ The shape is globulose, but flattened at the base ; the basal portion being transversely indented hy the rib of the leaf. It is firmly attached to the rib by a small projection of its own growth. Development is arrested when tenanted by parasites or inquiiines and the size remains small, but under normal conditions it may be 8 mm. high, and 10 mm. in diameter. If a number of the galls be gathered late in Sep-. 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 Connold, Edward T. , 1862-1910. London : Adlard and son
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectgallsbotany, bookyear
