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Literature:
 
Page number:42 
Description type:Non-original description 
Description:Clavicorona coronata (Schweinitz) Doty, comb. nov.
Clavaria coronata Schweinitz, Amer. Phil. Soc. Trans. n. s. 4: 182,1832. Burt, Mo. Bot. Gard. Ann. 9: 35, plate 7, fig. 49, 1922. Morgan, Cincinnati Soc. Nat. Hist., jour. 11: 88, plate 2, fig. 1, 1889.
Clavaria Petersii Berk. & Curt. in Ravenel, Fungi Car. 5: 33, 186o. Burt, Mo. Bot. Gard. Ann. 9:
35, plate 6, fig. 48, 1922.
Clavaria pyxidata Coker, Clav. of the U. S. and Can., p. 92, 1923 (in part).
Clavaria piperata Kauffman, Pap. Michigan Acad. Sci., Arts and Letters 8:146, 1927. Doty, Oregon State Monographs, Studies in Bot. 7: 21, plate 2, figs. 6 and 12, 1946.
Clavaria pyxidata var. asperospora Fawcett, 1939. Proc. Roy. Soc. Victoria 51; 15, plate 4, figs. 1, 4, and 5, and text fig. 1k.
The types of C. coronata (Fig. 2) and C. piperata (Figs. 4 and 5) show the same spores and tramal structure. The habitats are similar; fragments of both types examined were connected to rotten wood, coniferous wood in the case of the first. From all indications the two were in color somewhere near Avellaneous or Fawn Color. While the type of C. coronata is branched from the base and these branches less branched than the more centrally stemmed more strictly branched C. piperata they undoubtedly represent the same species. The Oregon collection cited is very much like the type of C. coronata except that the spores are a bit longer. Clamps are present on the smaller hyphae (about 1.5 µm in diameter) of the type of C. coronata and the larger hyphae are thick-walled, 2.5 to 5.5 µm in diameter, with very few cross walls, and with granular contents. The basidia are mostly near 4.2 by 14 µm with the hymenium about I5-20 µm thick. The gloeocystidia at the level of the hymenial surface are mostly about 7 µm broad at maturity. The color and the open curved branches (Fig. 6) with the thallus being strongly branched from the base, or arising as a number of closely gregarious branch systems, should suffice to distinguish this species in the field if it is indeed at all distinct from the next species.
Fawcett describes a new variety from Australia which may merit recognition as distinct by reason of its subglobose rough spores. The colors and form of the fructification indicate its close relationship with the forms belonging to this species. The record of rough spores, repeated in two other cases mentioned in this paper, is of interest. Spores of this genus should be studied in plain water or in ammonia to determine roughness. The author uses the routine KOH-phloxine technique or KOH followed by brilliant cresyl blue in making examinations of the trama.
Known from Pennsylvania (Schweinitz, Type in the herbarium of The Academy of Sciences of Philadelphia, Bethlehem), Washington (C. H. Kauffman, Type of C. piperata in the Univ. Mich. Herb., on conifer logs in, coniferous forest, Lake Quiniault, XI-2-'25), Wisconsin (E. T. Harper 3018, Chicago Nat. Hist. Mus. 528667, "on popular log. University Woods," Madison, V-23-'r r), Illinois (E. T. Harper 3561, Chicago Nat. Hist. Mus. 522403, rotten wood, Geneseo, X-'13), and Oregon (Wm. B. Cooke 9833, in woods along the north fork of Oak Creek, Corvallis, XI-14-'37).
 
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