A. gulielmae Nann.-Bremek. Proc. K. Ned. Akad. Wet, Ser. C 74:357. 1971.
Arcyria minuta Buchet, Mém. Akad. Malgache 6: 42. 1927.
Syn. Arcyria carnea (G. Lister) G. Lister, Jour. Bot. 59: 92 1921.
Description：
Fructifications sporangiate, in small clusters, 0.8-1.0 mm in total height when expanded . Sporangia stipitate, cylindrical. Stalk short, 0.2 mm long. Peridium early fugacious except for the funnel-shaped calyculus. Capillitium salmon buff (light in color), elastic, remaining attached to the calyculus after expanding, 5 μm in diameter, marked by close-set prominences (cogs and blunt spines) in square, notched or hammer-headed in profile and few half rings, with few bulbous free ends. Spores in mass flesh color, pale or colorless by transmitted light, rounded, smooth under high dry lens, very minutely roughened by oil lens, 7-8 μm in diameter. Hypothallus membranous, transparent.
Specimens：
Taipei City: 14 June 1982, CHL B105 (reported as A. carnea G. Lister in Taiwania 28: 98. 1983); 14 June 1982, CHL B121.
Habitat：
Bark of living trees (Bischofia javanica Blume.)
Distribution：
North America, Brazil, China, Japan, Taiwan.
References：
Ing, B. 1999; Liu, CH. 1983.
Provided：
C. H. Liu
Note：
The sporangia resemble A. insignis in size. But the flesh-colored (carrot red in reflex light) spore mass and the characteristics of the capillitial threads ( the prominences appearing notched, square-ended, or hammer-headed in profile) make it identified as such. A. carnea was noted (Hagelstein, 1944) as a species not clearly marked with sufficient and definite characters, and is placed under doubtful species (Farr, 1976).
Phylum：Myxomycota >> Class： Myxomycetes >> Order： Trichiales 
BCRC Number：