. Comparative morphology of Fungi. Fungi. HYPOCREALES 255 forms, these fertile parts have bizarre forms. Thus, in the Brazilian C. thyrsoides, the perithecia are obliquely imbedded in the rind so that the rind hugs each perithecium, thus forming cone-like structures in which the individual perithecia are like the cone scales (Fig. 170). In the Brazilian C. Volkiana, on lamellicorn larvae, there are formed from the bright yellow fructifications (in addition to the clavate perithecial heads) subulate or echinate processes on which the hyphae abstrict numerous hyaline conidia. This conidial forma
. Comparative morphology of Fungi. Fungi. HYPOCREALES 255 forms, these fertile parts have bizarre forms. Thus, in the Brazilian C. thyrsoides, the perithecia are obliquely imbedded in the rind so that the rind hugs each perithecium, thus forming cone-like structures in which the individual perithecia are like the cone scales (Fig. 170). In the Brazilian C. Volkiana, on lamellicorn larvae, there are formed from the bright yellow fructifications (in addition to the clavate perithecial heads) subulate or echinate processes on which the hyphae abstrict numerous hyaline conidia. This conidial formation gradually extends over the rest of the fructification, thus on C. Volkiana as on no other species of Cordyceps, the conidia and perithecia are formed on the same Fig. 171.—Cordyceps Volkiana. Habit, on lamellicorn beetle larvae. size; after Moiler, 1901.) (About natural With this peculiar form (Fig. 171), we conclude the third group of the Scolecosporeae and the Hypocreales. The phylogenetic significance of the Hypocreales lies in three different fields: imperfect forms, perfect forms and sexual organs. The imperfect forms morphologically belong to the same types as the Plectascales; they unite into fructifications to a higher degree, however, and undergo a many-sided development which in the parasitic species ends in stromatic forms {Tubercularia and Sphacelia types), in coremia {Sphaerostilbe group) and in pycnia (Polystigma and some species of Nectria), and in the saprophytic forms leads to structures {, in the Isaria group) which are equal in beauty to the perfect forms. Also the perithecia show the same sort of structure as in the' Plecta- scales and Perisporiales; they unite, however, in a higher degree to stromatic complexes and as such undergo special development to new aggregate fructifications, which gradually differentiate into fertile and. Please note that these images are extracted from scanned page images that may have been digitally enhanced f
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