382 MTXOGASTEES. 



A. Stipitate — stem distinct. 



1105. Diderxna floriforxne. P. " Flower-like Diderma." 



Yellowish or -wliitisli ; stem slender, peridium spherical, split- 

 ting in a stellate manner, reflexed ; columella ob-conical ; spores 

 black-brown. — Pers. Syii.p. 164. Fr. SJI. iii.p. 99. Bull t. 371. 

 E}ig. Fl. V. p. 310. 



On decaying trunks, &c. Autumn. [Mid. Carolina.] 



Stems springing from a common thickish membrane. 



1106. Didezxna umbilicatuxn. P, " Umbilicated Diderma." 



Wliitish, stem obese, peridium sub-rotund, umbilicate beneath, 

 split into laciniae, at length patent ; columella rufescent ; spores 

 purplish-black. — Fr. SJF iii.p. 99. Fl.Dan. t. Vdl2,f. 1. Eng. 

 Fl.Y.p.SlO. 



On bark of trees, &c. Ajjpin. 



The columella is very large, white within, resembling strongly the nucleus 

 of Noematelki. — En(j. Fl. 



1107. Bidexxna citzinuxn. F^. " Lemon Yellow 



Diderma." 



Lemon-yellow ; stem firm, even ; peridium hemispherical, 

 squamulose, dehiscent ; columella spurious ; spores black-brown. 

 —Fr. S.M. iii. p. 100. Fl. Dan. 1. 1312, /. 1. Eng. Fl. Y.p. 310. 



On leaves of Sphagnum. Aug. — Oct. Inverary. 



Scattered, each plant adhering by a separate membranaceous base ; stem 

 shortish, thickest below, when dry tawny-yellow. Peridium brownish, split- 

 ting irregularly in a stellate manner, covered under a lens with minute 

 roiindish white scattered scales. — Eng. Fl. 



B. Stipntate. — stem spurious, somewhat confluent. 



1108. Dideirxna vernicosum. P. " Varnished Diderma." 



Peridia obovate, external thick, bay- brown, shining ; internal 

 yellow ; stem thread-like, short, lax ; spores blackish. — Fr. S.M. 

 iii. j9. 102. DicJcs.i.t.S.f.6. Sow.t.lS6. Fers.0bs.i.t.S,f.7. Fl. 

 Dan. 1. 1312, f. 2. Mees.f. 110. G7ev. t. 111. Eng. FI.y. p. 311. 

 Kl. exs. no. 175. 



On grass, twigs, moss, &c. [Carolina, Maine, U.S.] 



(Fig. 124, clusternat. size, peridium magnified.) 



