194 ENDOSPORE^. [lachnobolus. 



18. A. cornuvioides Ra«ib., in Hedw., xxviii., p. 123 (1889). 

 Sporangia bright cinnamon, obovate on .short stalks ^ mm. high, 

 or almost sessile and globose, 0"5 mm. diam., frequently confluent 

 into irregular sessile plasmodiocarps, 3 mm. long, ^ mm. high ; 

 wall persistent in the lower part in the stalked forms as a flat 

 cup marked with beautiful net-like thickenings on the inner side ; 

 capillitium threads 3 to 8 /<. diam., much branched and anasto- 

 mosing with few free ends, with band-like thickenings, either 

 united to form a net, or scalariform, section of threads triangular 

 or flattened ; band-like thickenings not so regular as in .4. 

 Jerruginea, much higher, often curved and suddenly disappearing; 

 spores cinnamon in mass, smooth, 6'5 to 8"5 ju, diam. The markings 

 of the capillitium show near approach to A.ferruginea and A. 

 inermis, and one might unite all three inio a collective species : 

 A./erruginea has smooth spores 11 to 12 /jl, A, inermis Rac. has 

 the spores 10 to 12 /j,, minutely warted. 



Sah. On old trunks. — Poland. 



SPECIES EXCLUDED EBOM THE GENUS. 



A. Buchnalli Mass. = Trichia scabra Eost. 



A. chrysospora Mass. = Hemitrichia chrysospora List. 



A. clavata Mass. = Hemitrichia clavata Rost. 



A. decipiens Berk. = Hem,itrichia clavata Rost. 



A. Hariotii Mass. = Lachnobohos circinans Rost. 



A. Karstenii Mass. = Hemitrichia Karstenii List. 



A. leiocarpa Mass. = Hemitrichia leiocarpa List. 



A. paradoxa M.a.ss. — Hemitrichia Karstenii JAst. 



A. rubi/ormis Mass. = Hemitrichia ruhiformis List, 



A. Serpvla Mass. = Hemitrichia Serpula Rost. 



A. stipitata Mass. = Hemitrichia clavata Rost. 



A . Wigandii Mass. = Hemitrichia Wigandii List. 



Genus 38.— lACHNOBOLUS Fries, M. Scan., p. 356(1835). 

 Sporangia sessile, clustered ; sporangium-wall single, persistent, 

 not thickened with angular granules ; capillitium a loose network 

 of cylindrical threads, with thickenings in the form of closely 

 set warts. 



1. Lachnobolus circinans Fries, Summa Veg. Scand., ii. (1849). 

 Plasmodium ? Sporangia subglobose, sessile, clustered, 0-5 to 0-8 

 mm. diam., ochraoeous-brown, shining ; sporangium-wall mem- 

 branous, firm , papillose, ochraceous-yellow. Capillitium a network 

 of freely branching, ochraceous-yellow threads, 2 to 5 /<, diam., 

 closely and equally beset with prominent warts; attached at 

 numerous points to the sporangium-wall. Spores pale yellow, 

 almost smooth, with a few scattered warts, 6 to 8 /a diam. — 

 Rost., Mon., p. 282, fig. 186. Arcyria circinans Fr., Stirp. Femsj., 

 p. 83 (1827). Licea incarnata Alb. & Schw., Oonsp. Fung., p. 

 109 (1805). Lachnobolus- incarnatus Schroet., Krypt. Fl. Schles., 

 p. 110 (1885); Blytt, Bidr. K. Norg., Sop. iii. (1892), p. 12; 



