Title: Hawaiian Fungi
Identifier: agz2502.0001.001.umich.edu
Year: 1925 (1920s)
Authors: Stevens, Frank Lincoln, 1871-1934
Subjects: Fungi
Publisher: Honolulu, Hawaii : The Museum
Contributing Library: University of Michigan
Digitizing Sponsor: University of Michigan

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Stevens—Hawaiian Fungi 83 whirled thallus type is shown in figure 17, a, leading to close resemblance to Brefeldiella as figured by Theissen. All of these thallus types show perithecia, asci, and spores indistinguishable in character. Occasionally a marked, abrupt change in type of thallus is seen, the component cells that were previously parallel and orderly becoming irregularly arranged (fig. 17, d). No antagonism of colony for colony, such as is so common among growing colonies of fungi, is seen and two neighboring colonies, or branches of colonies, continue to grow toward each other until they meet,
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Figure 17.—Trichopeltis reptans: a, a circular thallus with no development of bands; b, (No. 637) on Vaccinium reticulatum, showing how lobes of two thalli react on contact with each other; c, showing (on specimen No. 1054) a simple band that is changing to the type with lateral development; d, (No. 1054) on Straussia sp.—a thallus in which the growth habit sud- denly changed from the parallel, regular cell arrangement to an irregular arrangement; e, (No. 637) on Vaccinhtm reticulatum, showing how the thallus grows around a circular trichome; f, (No. 251) a thallus with the setum. of another species' of fungus growing through it. their points of juncture being marked by a definite sharp line. (See fig. 17, b.) Thalli stripped from a leaf bearing smooth trichomes—from Vaccinium reticulatum for example— show holes marking the position of the trichomes, around which the advancing growth flowed as a stream around an island (fig. 17, e). Occasionally fungi of the genus Chaeto- thyrium, or near kin to it, growing with T. reptans, may send its setae through the thalli, making it appear as though the thalli of T. reptans bore the setae (fig. 17, /). The perithecia are usually from 60-140/x in diameter, though often smaller. The ostioles are roughly circular to elliptical and ragged of edge (fig. 16, a,b). The 8-spored asci are about 29-36 by 10-11 /x, with the

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