. CAEOMA. 419 leaHess shoots on Thi'Jojisis (Ivh(J)r(ita in Japan, whence they were sent to me (Figs. 25-4 and 255). One example (not tigurtMl) was as large as a young child's head. The shoots of the witches' brooms are furnished with vascular bundles and possess a parenchyma rich in starch-content. Each branch of the deformed shoot termi- nates in a hemispherical saucer-shaped vacoma-cw'&, at tirst covered over by the epidermis, l)ut with no peridium. The (Ytco?n«-discs are at tirst brown, but alter the epidermis bursts and rolls back, the yellow dusty spores appear. The spores ^^^^F
. CAEOMA. 419 leaHess shoots on Thi'Jojisis (Ivh(J)r(ita in Japan, whence they were sent to me (Figs. 25-4 and 255). One example (not tigurtMl) was as large as a young child's head. The shoots of the witches' brooms are furnished with vascular bundles and possess a parenchyma rich in starch-content. Each branch of the deformed shoot termi- nates in a hemispherical saucer-shaped vacoma-cw'&, at tirst covered over by the epidermis, l)ut with no peridium. The (Ytco?n«-discs are at tirst brown, but alter the epidermis bursts and rolls back, the yellow dusty spores appear. The spores ^^^^Fif- pori^n"oT'the'*'^re- arise serially from very short basidia; they ceding figure enlarged to J J y •/ show the CfieowiK-discson the are yellow and have striped membranes. ends of twigs, (v. lubcuf The witches' brooms also exhibit marked hypertrophy (Fig. 254). In the supporting branch both wood and bark are considerably increased. Large medullary rays occur in the wood, and nests of thin-walled parenchyma are interpolated between the regular tracts of tracheae, so that the general arrangement resembles that shown in juniper by W('>rnle's researches on Gymnosporaiujiam. The parenchymatous groups of cells in the wood appear to the naked eye as brown spots. They are permeated by a vigorous intercellular mycelium, which sends off large haustoria into the adjacent cells. Caeoma laricis ().i On needles of Larir. (Britain.) C. orchidis A. et 8. On orchids. (Britain.) C. chelidonii Magn. On Chelidonium majus ( America). C. fumariae Lk. On Conjdalis. C. euonymi ((hnel.). On Euonymus eiiropaeus (Britain). C. confluens (Pers.). On Riles alpinum, R. rubrum, etc. C. nitens (C. luminatmn) is the well-known Blackberry-rust so common in the United States. It is probably a form of Puccinia Peckiana.'^ C. aegopodii (Rebeiit.). On Aegopodkim Podagraria and Chaeroph>jJlnm C. ligustri (Rabh.). On Ligustritm vulgare. C. ari-italici (Diiby). On Anim macul
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Keywords: ., bookcentury1800, bookdecade1890, bookpublisherl, booksubjectfungi
