Phylum：Myxomycota　>>　Class： Myxomycetes　>>　 Order： Trichiales 
   
 
　BCRC Number： NO BCRC Number!  
   
　Scientific Name： Arcyria incarnata
 
   
   
　Author：

Stemonitis incarnata Pers. In J. F. Gmelin, Syst. Nat. 2: 1467. 1791.

Arcyria incarnata (Pers.) Pers., Obs. Myc. 1: 58. 1796.
   
 
 
 
 
　Description： Fructification crowded, sporangiate, up to 6 mm when expanded. Sporangia stipitate, or rarely sessile, ovoid, subcylindrical, or cylilndrical, crimson to redish brown, about 2 mm long, 0.5-0.8 mm at the broadest base before expansion. Stalk never longer than 1.0 mm, filled with spore-like vesicles. Peridium fugacious except for the large shallow usually red-brown plicate calyculus, inside surface of calyculus spinulose or papilose. Capillitium a highly elastic net of crimson threads, weathering to tawny or ochraceous-tawny, densely marked with conspicuous sharp spines and half rings, 3-5 μm (markings excluded) in diameter, loosely attached only to the center of calyculus and easily breaking away as a whole, usually erected, not dropping. Spores rosy (old rose) in mass, 7-9 (-10) μm in diameter, rounded, marked with few scattered warts. Hypothallus continuous, membranous, brownish.
 
 
 
 
 
　Specimens：

Nantou County: Yü-ch’ih Hsiang, 26 Nov 1979, CHL M31. Tainan City: 4 Aug 1986, CHL B617.
 
 
 
　Habitat： On dead hard wood.
 
 
 
　Distribution：

Cosmopolitan.
 
 
 
　References：

Martin, Gw and Alexopoulos, CJ. 1969; Liu, CH. 1980.
   
   
   
　Provided：

C. H. Liu
 
 
　Note： This specimen grew side by side with A. insignis when collected, but is very distinct by the crowded ‘Eugene red’ (Ridgway, 1912) expanded sporangia. They are easily distinguished from A. denudata by the brighter color, shorter stipe, and larger cup, and especially by the loosely attached capillitium. The capillitial thread of our collecion is unique. It is very spiny when viewed by the margins, the half rings and spines are quite large and high, up to 3 μm long. In this respect, our specimen is very similar to Arcyria oerstedtii Rost., Mon. 278, 1875 (Martin and Alexopoulos, 1969; Lister, 1925; Macbride, 1922). But the fully expanded capillitium net of our specimen is erect instead of dropping which is a distinct characteristic of A. oerstedtii. The capillitial thread analyzed by SEM (Robbrecht, 1973) was described as “marked with great spines and cogs and a finer pattern of warts and ridges” This sort of fine ridges have also been clearly observed along the surface of the thread in our specimen.