54 MYXOMYCETES. 



Genus 24. DICTYCSTZLIUM. Bref. 



Stem many celled, sporangium naked. Rtfki. Mon., 217. 



Family 12. LICE ACE ^. 



Simple sporangia, plasmodiocarp or sethaliuni ; wall of sporan- 

 gium not symmetrically perforated. Rtfki. Mon., 218. 



Genus 25. LICE A. Schrad. 



Plasmodiocarp with simple walls, usually covered with a stout, 

 brownish, opaque, subsiding bark. Rtfki., 218. 



Gemis 26. TUBUX.XNA. Pers. 



Sporangia cylindrical, standing in clusters upon a hypothallus, 

 almost flattened, or evidently stipitate ; wall of sporangium simple. 

 Rtfki., 219. 



64. Tubulina cylindrica. Bull. 



Sporangia cylindrical, rounded at the apex, gregarious, mostly 

 crowded, standing at first on a plane, then convex hypothallus ; 

 mass of spores rusty-chestnut, or pale chestnut ; spores deli- 

 cately waited, '095-'0067 mm. diam. ; walls of the sporangium 

 when quite mature beautifully iridescent. Rtfki. Mon., 220. 



On rotten wood. 



Tubulifera ceratum, Fl. Dan., t. 659, f. 2 (1777). 



Tubulifera araclmoidea, Jacq. Misc., t. 15 (1778). 



Mucor tubulosus, Retz. 



Stemonitis ferruginosa, Batsch., f. 175 (1786). 



Splicer -ocarpus cylindricus, Bull., t. 470, f. 3 (1791). 



Sph&rocarpus fragiformis, Bull., t. 384? (1791). 



Tub{f era ferruginosa, Gmel. Sys., 1472 (1791). 



Tubifera cylindrica, Gmel. Sys., 1472 (1791). 



Tubifera fragiformis, Gmel. Sys., 1472 (1791). 



Tncliia fragiformis, With. AIT., iii., 480 (1792). 



Tubulifera coccinea, Trent., p. 243 (1797). 



Licea tubulina, Schrad. N. G., 16 (1797). 



Licea clavata, Schrad. N. G., 18 (1797). 



Tubulina fragiformis, Pers. Disp., p. 11 (1797) ; Pers. Syn. 

 t. 4, f. 3, 4. 



Tubulina fallax, Pers. Obs., ii., 28 (1799). 



Tubulina fragiformis, a. papillata, j3. clavata, y. conica, d. coccinea, 

 e operculata ; Pers. Obs., ii., 29. 



Reticularia multicapsula. Sow., t. 179 (1799). 



Tubulina cylindrica, DC. Fl. Fr., 674 (1805). 



Tubulina fragif era, Poir. Ency., viii., No. 3 (1808). 



Licea fragiformis, Nees, f. 102 (1816) ; Eng. Fl., v., p. 321 ; 

 Cooke Hdbk., 1194; Fung. Britt., ii., 528. 



Dermodium fallax, Nees, f. 103 (1816). 



