Click on map for details about points. IDnature guide Myxomycetes Links Hosts Overview Sporocarps gregarious, stalked and up to 3 mm in total height but varying to sessile or plasmodiocarpous. Sporothecae cylindrical, usually nodding, deeply infundibuliform or cup-shaped, up to 1 mm diam. Peridium greenish or colourless, flecked with yellow, brown or red limy scales which may be sparse or may form a nearly continuous limy crust. Dehiscence from above, the outer portion rupturing irregularly or in a ± lobate fashion, the segments becoming reflexed, exposing the spikes of the limy capillitium and leaving the spineless inner peridial walls protruding as a cylindrical tubular pseudocolumella. Stalk, when present, terete or flattened, hollow, usually long, red, translucent, arising from an inconspicuous hypothallus. Capillitium duplex, composed of limy, spine-like, simple or ± branched processes arising from the inner walls of the outer part of the peridium and a dense network of slender, violaceous threads bearing a few fusiform, yellow calcareous nodes. Spores globose, violet-brown, punctate, (6-)7-8 µm diam. Plasmodium yellow. Links to other sites Searchable databases -- The Eumycetozoan Project References Abbott,C.E. 1944: Nutritional requirements of Physarella oblonga. Proc.Neb.Acad.Sci. 544 Balaji,S., Sujatha, A., Kalyanasundaram, I. 1999: A simple rapid procedure for obtaining axenic cultures from monoxenic cultures of myxomycete plasmodia. Canadian Journal of Microbiology 45(10): 865-870. Bechtel,D.B. 1974: Sporangial development in the myxomycete Physarella oblonga. A survey of the stage of sporangium development with specific emphasis on capillitial formation. American journal of botany 61: 20-21. Bechtel,D.B. 1976: Nuclear degeneration in the myxomycete Physarella oblonga. Protoplasma 90(1-2): 179-187. Bechtel,D.B. 1977: Spore wall formation in the myxomycete Physarella oblonga. American journal of botany 64(1): 111-116. Bechtel,D.B., Horner, H. T. 1974: Calcium knot formation and deposition to the peridium in the myxomycete Physarella oblonga [abstract]. American journal of botany 61 Bechtel,D.B., Horner, H. T. 1975: Calcium excretion and deposition during sporogenesis in Physarella oblonga. Calcif.Tissue 18: 195-213. Emoto,Y. 1934: Entwicklung der Sporangien von Myxomyceten. IV. Über Physarella oblonga und Hemitrichia clavata. Bot.Mag.(Tokyo) 48: 934-938. Gehenio,P.M., Luyet, B. J. 1950: Complete development of mycetozoon from a single spore or a single myxamoeba. Biodynamica 7: 11-23. Lado,C., Teyssiere, M. 1998: Myxomycetes from Equatorial Guinea. Nova Hedwigia 67(3-4): 421-441. Ribeiro,S.M., Cavalcanti, L. H., Pereira, E. C., Silva, N. H. 2003: Plasmodium immobilization of Physarella oblonga (Berk. & Curt.) Morgan (Myxomycetes) using kaolinite as a matrix of entrapment. Research in Microbiology 154(1): 55-58 Acknowledgements The Eumycetozoan Project -- working to understand the ecology, sytematics and evolution of myxomycetes, dictostelids and protostelids -- the true slime molds. Sponsored by grants from the National Science Foundation. Feedback Please send any corrections and comments about this page to John Shadwick Department of Biological Sciences, University of Arkansas, Fayetteville, AR 72701, USA email: jshadwi@uark.edu   phone: USA-479-575-7393. Supported by National Biological Information Infrastructure National Science Foundation Hosts · map Family Scientific name @ source (records) _   Substrate @ BPI (61) go to Discover Life's Facebook group Updated: 2024-04-30 22:07:01 gmt Discover Life | Top © Designed by The Polistes Corporation