MYXOMYCETES. 49 



56. Coxnatxicha pulchella. 



Sporangia either elongated ovate, or cylindrical, with an obtuse 

 apex, slightly umbilicate below, -^-1 mm. long; stem subulate, black, 

 ^-4 mm. high, extending within the sporangium as a cohmiella running 

 almost to the apex ; capillitium of arcuate flexuous threads, com- 

 bined into a dense net, imperceptibly narrowed at the surface ; 

 mass of spores and capillitium bright ferruginous ; spores pale 

 ferruginous, delicately warted, 0057--0075 mm. Etfki. Hon. 

 Supp., 27. 



Tar. a obovata. 

 var. /3 cylindrica. 



On herbaceous plants, ferns, &c. 



Stemonitis pulcherrima, B. & Curt. Grev., 373. 



Stemonitis pulchelfa, Bab. Abst. Linn. Soc. Trans., 1839; Berk. 

 in Ann. & Mag. N. H., p. 431 (1841), t. 12, f. 11 ; Cooke Hdbk., 

 No. 1160. 



Comatricha Persoonii, Rttki. Mon., 201 (partly). 



Genus 19. LAMP ROBERTO A. R. 



Sporangium globose or ellipsoid, stipitate ; stem lengthened 

 directly into the columella, scarce reaching half the height of the 

 sporangium, either cylindrical, or swollen and clavate at the apex ; 

 capillitium fasciculate, originating from the base, usually regularly 

 forked, rarely combined into a tangled net; wall of sporangium 

 delicate, usually of a metallic lustre, now and then thick, with the 

 saucer-like base of the sporangium permanent. Etfki. Mon., 202. 



57. Lamprodeima physaxioides. (-4. < S.) 



Sporangia globose, with a silvery metallic lustre, stipitate ; 

 stem black, opaque, subulate, expanded at the base into a small 

 circular hypothallus, penetrating the sporangium with a short 

 clavate swollen columella, not reaching half the height of the 

 sporangium ; tubes of the capillitium violet-brownish, originating 

 singly from the columella, in continuation forked more and more, 

 and combined into a net by transverse branches ; at the surface of 

 the sporangium the capillitium is rather dense ; spores bright- 

 brown, -0125--014 mm. Rtjki. Mon., 202. 



On mossy stumps. (Figs. 55, 59, 62.) 



Stemonitis pTiysarioides, A. & S. Consp., t. 11, f. 8 (1805); B. 

 & Br. Ann. N. Hist., No. 386 ; Cooke Handbk., No. 1161. 



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