MYXOMYCETES. 25 



Gemts 9. TRICH AMPHORA. (JungJi.) 



Sporangia splitting irregularly, with single wall, slightly contain- 

 ing lime ; capillitiura of tubes equally wide from the bottom 

 throughout their whole length, combined into a loose net, empty, 

 or filled with air ; without columella, often stipitate. Rtfki. 

 138. 



[No British representative.] 



Genus 10. BADHAMIA. Berk. 



Sporangia with single wall, splitting irregularly; capillitiuni 

 uniformly grown to the wall of the sporangium, with numerous 

 branches combined into an all-sided net, now and then with a 

 distinct central columella, entirely filled throughout their length 

 with small granules of lime. Rtfki. Mon., 139. 



20. Badhamia hyalina. (Pers.) 



Sporangia in clusters, always exactly globose, inflated, smooth, 

 greyish-white, after the spores are expelled snow-white, either 

 almost steniless or else with a stem of variable length, which is 

 simple or fasciculate, branching, straw or rusty-yellow ; spores, from 

 5 to 20, slightly agglutinated together in a heap; single spores 

 01-'0125 mm., dull violet, with a thick membrane, spinulose; 

 without columella, knots of capillitiuni very faintly developed. 

 Rtfki s Mon., 140. 



a. subsessilis. Stem short, disappearing, sporangium seem- 



ing to be sessile. 



ft, genuina. Stem 3-4 mm. long, usually rigid. 

 y. gracilis. Stem elongated, more than 5 rnm. long, usually 



fasciculate, nodding, slender. 



On rotten wood. (Fig. 113.) 



Phi/sarum hyalinum, Pers. Disp., t. 2, f. 4 (1797) ; Eng. Flor., v., 

 p. 315; Ann. Nat. Hist., No. 213. 



Physarum membranaceum, Schnm. Herb. 



Physarwn globitliferum, DC. in herb. 



Physarnm hyalinum a. albidum, A. & S., 256 (1805). 



Physarum cinereum, Link. Diss., i., 27 (1809). 



Physarum botryoidcs a. hyalinum, Fr. Stirp. p. 83 (1825). 



Physarum botrytis, Somm. (1826). 



Physarum gracile, Weinm. Herb. 



Physarum cancellatum, Wallr. Fl. Germ., 2128 (1833). 



Diderma papaverinum, Wallr. Fl. Germ., 2210 (J833). 



Badhamia hyalina, Berk. Linn. Trans., xxi., t. 19, f. 3 (1851), 

 Cooke Handbook, No. 1143. 



Physarum gracilentum, Fckl. Syrn., 342 (1869), non Fries. 



