Fungi Nova, Vivenda Citrus* 



DR. H. REIIM, MUNICH, GERMANY 



Ad folia Citrus Aurantii cultivatas, Corona et Claremont, California, 1, 1911; 

 leg. C. W. Metz et J. A. Prizer. 



I. In plagis foliorum vivorum late expansis, longitudinaliter nervorem medialem 

 amplectentibus ambientibusque, plane exsiecatis, papyraceis, flavide albescentibus, 

 curvado-flavorubidule marginaceis arete gregaria innati, plagulas cinerascentes 

 reddentia, inprimis pagine? inferiore folii, perithecia globulosa, glabra, nigra, pro 

 minutissime perspicue pertusa, papillula perexigua demuin prominentia, parenehy- 

 matice fusee contexta, 0. 1 to 0. 15 mm. diam. Asci lageniformes, basi lata ses- 

 siles, versus apicem cylindraceo-elongati, 50 to 60 micromm. longi, in parte in- 

 feriore 20 micromm., ad apicem 10 ulati, 8 spori. Spore? subclavata?, utrinque ro- 

 tundata?, medio septate? ( paullulum constricta?, utraque cellula i guttata, hyaline?, 

 20 to 7 micromm., in parte inferiore asci plerumque sitae. Paraphyses nulla?. 



Mycosphaerella lageniformis Rehm. 



II. In iisdem plagis, a M. lageniformis late absessis, nee distincte separatis, 

 sed plus minus ne albidulis hie illic subgregaria innata perithecia globulosa, pagi- 

 nam inferiore folii elevantia ab eaque tecta, demum dirrumpentia, minutissime 

 papillulata, glabra, excipulo sclerotioideo, duro, extus fusco, intus hyalino praedita, 

 0. 2 to 0. 3 mm. diam. Asci clavato-cylindracei, crasse tunicati, vix stipitati, apice 

 rotundati, 1 10 to 130, 20 to 22 micromm., 8 spori. Spore? ovoidae, utrinque obtuse?, 

 medio constricta?, transverse 5-, longitudinaliter exclusis cellulis apicalibus 2- 

 septate?, subfusce?, 22 to 24, 10 to 12 micromm., distichae. Paraphyses baud con- 



Scleroplea Aurantiorum Rehm. 



Von Hohnel— Pragm. Myc. IV, in Ber. kais. Ak. Wiss, Wien, Bd. CXVI, Abt. I. 

 p. 136 — claris verbis deseripsit definitionem Scleropleae (Sacc. Syll. II, p. 277). 

 Oudem. (cfr. Sacc. Syll. XVI, p. 548), generis Pseudosphaeriacearum, inprimis 

 Pleosphaeriaceis alienum contextu sclerotiadeo, stromatiseo, sine paraphysibus con- 

 texto. Perithecia? hujus generis sclerotiacea certe per longum tempus viva, itaque 

 valde noxia evadere possunt, non minus perithecia Mycosphaerellae lageniformis 

 luxurie imprimis sporarum. 



Observatione accurata foliorum vivorum mox in lucem prodibis, cujus harum 

 specierum parasitiearum invasione primordia destructionis foliorum prodibis, mihi 

 videtur Mycosphaerellae. Utraque species valde noxia? fere mihi videtur. 



*Dr. Rehm has very kindly drawn up the formal diagnoses of these two interesting new 

 fungi, living on Citrus. One of them, at least, is purely saprophytic. Mr. Metz is preparing 

 drawings of them, and also further notes, which will be published later. These two fungi 

 are of especial interest on account of their occurrence on spots ordinarily attributed to 

 wither-tip. 



