. Dansk botanisk arkiv. Plants; Plants -- Denmark. 436 Dansk Botanisk Arkiv, Bd. 3. Nr. 1. hæc pilos, ascocystos et sporangia erecta extra hospitem surgentia gignunt. Ascocysti clavati, ca. 65 fi longi et 10—16 // lati. Pili longi; articuli eorum in parte basali breves, ca. 6 fi lati, in superiori parte longi, ca. 180 // et crassiores, ca. 16 \i lati. Sporangia pluri- locularia ex pediculis brevibus surgentia, oblonga-fiisiformia, ca. 16—26 fi lata et 65 // longa. Upon a specimen of Hypnea miiscijormis a small, partly en- dophytic brown alga was found which I think can be referred to the genus
. Dansk botanisk arkiv. Plants; Plants -- Denmark. 436 Dansk Botanisk Arkiv, Bd. 3. Nr. 1. hæc pilos, ascocystos et sporangia erecta extra hospitem surgentia gignunt. Ascocysti clavati, ca. 65 fi longi et 10—16 // lati. Pili longi; articuli eorum in parte basali breves, ca. 6 fi lati, in superiori parte longi, ca. 180 // et crassiores, ca. 16 \i lati. Sporangia pluri- locularia ex pediculis brevibus surgentia, oblonga-fiisiformia, ca. 16—26 fi lata et 65 // longa. Upon a specimen of Hypnea miiscijormis a small, partly en- dophytic brown alga was found which I think can be referred to the genus Ascocyc- lus, having those bo- dies, named ascocysts by Sauvageau (Myrio- nemaceæ, p. 9), chara- teristic of the genus« The base of the plant (Fig. 412 a, h) consists of filaments creeping among the peripheral cells of the Hypnea. The. cells in these filaments are rather irregularly shap- ed, often swollen in their middle. They reach a breadth of about 7—8 p. From these cells arise: 1) the ascocysts, 2) the hairs and 3) the sporangia. Characteristic for all three organs is that they are rather thin at their start from the creeping filaments, but gradually, as they approach the periphery of the host plant, they become thicker (comp. Fig. 412). The ascocysts are clavate in shape; from a slender base they increase gradually upwards until near their apices which are broadly rounded. They are about 65 p long and their diameter reaches a length of about 10—16 p. They may arise directly from a cell in the creeping filament or have a few short cells at their base. They have thick walls and their contents seem rather homo- genuous and of a dark brown colour in spite of the plant having been preserved in alcohol. The hairs have a growth zone near their base; here the cells. Fig. 412. Ascocyclus Hypneæ nov. spec. a, b, c, parts of the plant. (About 150 Please note that these images are extracted from scanned page images that may have been digitally enhanced for readabilit
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