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 Add this item to the list   Craterellus cornucopioides
   
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Page number:268 
Description type:Non-original description 
Description:Craterellus cornucopioides
The primordium is conical until 3-5 mm. high, when a hollow, which has appeared in the middle, extends to the apex. This is the only schizogenous cavity in the fruit-body and it is soon obliterated. The peripheral hyphae of the apex continue to grow upwards and form the tubular fruit-body, both outer and inner surfaces of which are external surfaces developed behind the growing margin (text-figs. 4-7). The hymenium forms on the outside and a sterile cortex of excrescent hyphal ends on the inside, and in most cases both layers thicken throughout the life of the fruit-body. Thus, Craterellus is remarkable among Basidiomycetes for its tubular fruit-body, like and enormors Solenia upside down and inside out.
Faint ribs or reticulations occur on the hymenium. They begin as fine lines about 0.5-1 mm. behind the growing margin, and they thicken to 0.2-0.8 mm. high and wide. They fork distally or fan upwards, much as the folds of Cantherellus, but their nature is different, for they are found on the stem where there is no hymenium and they occur in this tropical variety of Cr. cornucopioides in which the hymenium does not thicken. They are localised the thickenings of the medulla, or fIesh or trama of the fruit-body, where hyphae have branched more freely to produce, as it were, cords immersed in the general tissue, much as a funiculose pattern can be seen in the fruit-bodies of Cladoderris and some polypores and in the mycelial excursions of some lignicolous fungi. The hymenium, developing on the outside of these thickenings, conforms to the pattern to which it has not contributed. No lines appear on the inner side of the fruit-body because the cortex obscures them. The scurfy squamules, formed by the cortex, do not arise from the disruption of a continuous cortex, as in most scaIy surfaces in fungi, but from uneven excrescence of the corticaI hyphae in small patches 0.10.5 mm. wide in the first place: even in this detail, Craterellus is peculiar and differs from Cantharellus.
The sides of the fruit-body become somewhat bullate, concavities on the one side corresponding with convexities on the other. This pattern is caused, presumably, by unequal enlargement of the medullary cells and tensions exerted by the hymenium on the thin tissue.
 
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