Basidiomycetes
Jelly Fungi
The last group of Basidiomycetes that we will discuss has commonly been referred to as the "Jelly Fungi" because of the jelly-like consistency of the basidiocarp. This type of basidiocarp becomes shrunken and shriveled, when dried, but with available moisture revives to its former consistency. This type of basidiocarp is said to be gelatinous.The life cycle of this order is the same as that in mushrooms. There are several orders in this group of fungi and they are delimited by the morphology of their basidium. The basidia are typically septate, the exception being the tunning fork basidium, which is aseptate, but is deeply lobed and produce only two basidiospores. Three orders will be described below: The Tremellales, Auriculariales and Dacrymycetales.
Order: Tremellales
This order produces cruciate septate basidia (Fig.
1). This basidium type is so-called because when viewed, from above, under a compound
microscope, the basidium can be seen to be divided, evenly, into four chambers by septa
that intersect at right angles. The intersection of the septa forms a cross or crucifix.
The basidiocarps are too variable to describe. However, we will look at a few species of Tremella
that can be found in Hawaii (Fig 2-3).
Order: Auriculariales
This order is characterized by having a
transversely septate basidium (Fig. 4). As is the case of the Tremellales, many
species have a gelatinous basidiocarp, reminiscent of the consistency of jelly. There is
only one common, obvious species in Hawaii, Auricularia cornea (Fig. 5)
Order: Dacrymycetales
This order is characterized by presence of a
tunning ford basidium (Fig. 6). The basidiocarps are typically some shade of yellow-orange
and is gelatinous, as in the other two orders. Only a few common species occur in
Hawaii (Fig. 7-9)