. A monograph of the Mycetozoa, being a descriptive catalogue of the species in the herbarium of the British Museum. Illustrated with seventy-eight plates and fifty-one woodcuts. Myxomycetes. 134 * ENDOSPOHE*. [AMATJROCHjETE. Order II.—AMAUEOCHjETACEiE. Sporangia combined into an sethalium. Oapillitium dark purple-brown, of irregular strands and threads, or of complex structure. KEY TO THE GENERA OF AMATJROCHMTACE^. Oapillitium of irregularly branching threads. (20) AMAUROCHiETE. Fig. 28.—Amauroclicete atra Eost. a. ^thalium. Half natural size. h. CapilUtimn. Magnified 10 times. Oapillitium of
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. A monograph of the Mycetozoa, being a descriptive catalogue of the species in the herbarium of the British Museum. Illustrated with seventy-eight plates and fifty-one woodcuts. Myxomycetes. 134 * ENDOSPOHE*. [AMATJROCHjETE. Order II.—AMAUEOCHjETACEiE. Sporangia combined into an sethalium. Oapillitium dark purple-brown, of irregular strands and threads, or of complex structure. KEY TO THE GENERA OF AMATJROCHMTACE^. Oapillitium of irregularly branching threads. (20) AMAUROCHiETE. Fig. 28.—Amauroclicete atra Eost. a. ^thalium. Half natural size. h. CapilUtimn. Magnified 10 times. Oapillitium of horizontal threads, with many-chamhered vesicles. (21) Beepeldia. Fig. 29.—Brefeldia maxima Eost. a. ^thalium. Natural size. h. Oapillitium and spores. Magnified 50 times. Fig. 29. Genus 20.—AMAUROCH^TE Eostafinski, Versuch, p. 8 (1873). ^thaha pulvinate, composed of elongated closely com- pacted confluent sporangia; sporangium-walls not developed. Oapillitium rising from the broad membranous base, consisting of dark purple-brown irregularly flattened ragged strands, dividing into many anastomosing branches, which vary much in length and thickness. 1. A. atra Eost., Versuch, p. 8 (1873). Plasmodium creamy- white, emerging from recently felled fir-wood. ./Ethalium pulvinate or variously shaped, 2 mm. to 4 cm. or more broad, black, covered with a silvery evanescent membrane; individual sporangium- walls undeveloped. Oolumella none. Oapillitium as described in the genus, often very scanty. Spores dull purple, spinulose, 11 to 13 [x. diam.—Mon., p. 211; Oooke, Myx. Brit., p. 52; Blytt, Bidr. K. Norg., Sop. iii. (1892), p. 9;'Mass., Mon., p. 89. Lycogala atrum Alb. & Schw., Oonsp. Fung.; p. 83 (1805). Retieidm-ia atra Fr., Syst. Myc, iii., p. 86. Plate LI., A.—a. oapillitium, x 20; J. spore, x 600 (England). • Hah. On fir-wood.—Halse House, Somerset (B. M. 17); Scotland (Edin. Herb.); Lyme Eegis, Dorset (LiB.M.lOl); Poland (Strassb. Herb.); Maine, U.S.A. (K. 800