Sphoerioideae, Dictyosporae, Dichomera. 471 



initio continuo dein reticulato ; endosporio ex articulis globosis, 

 nucleatis, transverse seriatis, denique secedentibus, fuscis. 



Hah. in ramis fagineis, Maine Americae borealis. — uCum 

 Thyrsidio nonnullis notis convenire mihi videtur». 



DICHOMERA Cooke Praec. Hend. pag. 24 p. p. Sacc. Mich. II. pag. 8 

 (Etjm. dichos dupliciter, et meros pars, articulus) Slaurosp/tce- 

 ria Rabenh. et Kickx p. p. Hercospora Preuss, nec alior. — Pe- 

 rithecia stroraate dothideaceo, pulvinato, erumpente subimmer.sa, 

 globulosa, papillulata. Sporulas globulosaj v. ellipsoideae, 2-4-septato- 

 murales v. srepius radiatim v. cruciatim 3-6-septatae, fuligineae, 

 stipitellata3. — Species plurimse potius unius speciei varietates. 



1. Dichomera Saubinetii (Mont.) Cooke Przec. Henders. p. 24, Hen- 2^ii 

 derso7iia Saubinelii Mont. Syll. p. 263, et Cent. VI. n. 93, 1. c. 



— . Doihideoides, erumpens, elliptico-subrotunda, planiuscula, atra 

 opaca; peritheciis stroraate fusco-nigrescente imraersis polystichis, 

 superficialibus albo-farctis, alte demersis, bruoneis ; sporulis sub- 

 globosis 8-10 •«.. diam. vel 11-12 s 8-9, 2-septato-muriformibus 

 v. sa^pius radiatim 3-5-septatis, ad septa leniter constrictis, fuli- 

 gineis, initio basidiis cylindraceis sporulii brevioribus, hyalinis fultis. 

 Hab. in ramis Rhamni, Sarabuci, Quercus in Gallia, Ita- 

 lia bor., Britannia. 



2. Dichomera Rhamni (West.) Sacc. Staurosplucria Rhamni West. 2543 

 Bul. ac. roy. belg. II. ser. t. Vil. n. 5 cura ic. — Peritheciis ag- 

 gregatis, nigris, membranaceis, immersis, dein superficialibus epi- 

 dermide rupta cinctis eamque pustulatim elevantibus ; ostiolo pa- 

 pilliformi; sporulis numerosis, rotundatis vel irregularibus brun- 

 neis, 2-3-4-locularibus, septis ad centrura convergentibus, sporu- 

 lam stellatam sistentibus. 



Hab. m ramulis Rhamni Frangula) in Belgio (Tosquinet). 



3. Dichomera saiicina (Vize) Sacc. Hendersonia salicina Vize in 2549 

 Grevill. t. 97, fig. 17. — Gregaria, erumpens; peritheciis nigris, 

 applanatis, confluentibus v. dothideoideis; sporulis ellipticis, trise- 

 ptatis, plerumque longitudinaliter divisis, brunneis, 15-22^:8-10. 



Hab. in ramis vetustis salicinis, Forden Britanniie. 



4. Dichomera mutabiiis (Berk. et Br.) Sacc. Hendersonia mutabilis 2550 

 C. et Br. Ann. N. H. n. 414. — Pustulis depressis, ellipticis, ni- 

 gris intus pluricellularibus, subcutaneis et vix erumpentibus ; spo- 

 rulis oblongo-ellipticis, 3-4-septatis et muriformibus. 



