CHAPTER V.—COMPARATIVE REVIEW.—ASCOMYCETES.—PYRONEMA. 209 
embraces its apex and presses its obtuse extremity firmly against it. When this has 
taken place, seldom before, the tube is delimited by a firm transverse wall from the 
inflated portion of the archicarp, and, as soon as the wall is formed, the membrane 
in each of the connected organs is dissolved at the point of contact of the tube with 
the antheridium, and the protoplasmic bodies of the two organs unite together through 
a broad aperture (Fig. 97 2). The bent tube is therefore an organ which affects an 
ors 
ER 
au 
BIT: 
Des 

FIGS. 96—99. Pyronema confluens, Tul 
FIG. 96. Rosette of antheridia and icarps on the mycelial fil m; [first beginni of the fil of the lope. 
Magn. 190 times. 
FIG. 97. A a small rosette of i p ye PS, a ta trichogyne which has not yet entered into 
union with @. B from an older rosette; the trichogyne ¢ proceeding from the archicarp c and cut off by a transverse wall is 
in open communication with the antheridium a. Ca pair of organs isolated, from a young sporocarp in about the same stage as 
Fig. 98; @ antheridium in icati gh ¢ with an i ¢, which is much swollen and has put out branched 
ascogenous hyphae from its surface. After Kihlman’s preparations and drawings. Magn. about 300 times. 
FIG.98. Young sporocarp in water showing through the cover-glass. The group of antheridia and archicarps is densely 
overgrown by hyphae of the envelope which have formed erect paraphyses above; the archicarps appear through the envelope-weft 
as large vesicles. Magn. go times. 
FIG 99. Median longitudinal section gh a p in the process of maturing. Archicarps and antheridia can no 
longer be distinguished, and many asci have been formed between the paraphyses. (See Fig. 39.) Magn. about 45 times. 


heridi. 




union between the archicarp and the antheridium and, in accordance with the 
terminology which is in use in other cases and which will be further considered below, 
may be termed a /richogyne. Conjugation is followed by increase in size in the 
archicarps, and by the formation of protuberances in a dozen or more places scattered 
over the surface of each archicarp, which develope into thick short-celled ascogenous 
hyphae (Fig. 97 C). Simultaneously with this, or even before it, copiously branched 
[4] P 
