Apothecia and ascospores of Lobaria oregana and Lobaria pulmonaria investigated.

  title={Apothecia and ascospores of Lobaria oregana and Lobaria pulmonaria investigated.},
  author={William C Denison},
  volume={95 3},
Apothecia of Lobaria oregana and L. pulmonaria emerge in late spring and discharge ascospores throughout the year. Most populations have a few fertile thalli, although the proportion of fertile thalli usually is less than 25 percent. Ascospores fail to germinate in water or on water agar but do germinate on agar containing an adsorbant and either a sugar or the sugar-alcohol ribitol. It is postulated that the ascospores of these species contain an autoinhibitor that must be removed before… CONTINUE READING

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