- 21 — 



Pseudodiplodia Xylariae Ferd. et Wge. sp. n. PI. II, fig. 10. 



Pycnidiis superficialibus dense gregariis, globosis, subconico-protractis, 

 nonnumquam applanatis, formaque Roselliniam thelenam in memoriam 

 revocantibus, membranaceis, 100 — 125 /u diam., luteis. Peridio stratis 

 circ. 5 minute-cellularibus composito, intimo conidiifero, ideoque conidio- 

 phoris nullis. Conidiis oblongis, apice rotundatis vel ellipsoideo-subfusi- 

 formibus, nonnumquam varie irregularibus, maturis 1-septatis, ad seplum 

 saepius leniter conslrictis, guttulis 2 — 4 oleosis farctis, 6Va — 8:=::2Vt — 

 3^4^, paucis superantibus, hyalinis. — Habilu primo obtuito fere Eurotii. 



Ad clavulas Xylariae sp. in insula St. Jan Indiae occidentalis. (Leg. 

 Raunkiaer). 



Alfred Moller remarks^) on Didymosporae Hypocreacearum : "Sac- 

 cardo's weitere Theilung dieser Formen in Hyalodidymae und Phaeodi- 

 dymae bleibt zweckmassig ganz ohne Beriicksichtigung. Denn die ersteren 

 sollen „sporidia hyalina vel olivascentia" und die anderen "sporidia fus- 

 cescentia" haben; aber schon in der Gattung Nectria finden sich die ver- 

 schiedensten Farbenabstufungen". 



The genus Pseudodiplodia, that sureiy is a conidial stage of a fungus 

 of the family Hypocreaceae, most likely of Nectria, shows as to the 

 spore-colour nearly the same character as this last named genus. The 

 spore-colour is namely here going from hyaline over olive to "fuscus" 

 (P. atrofusca (Schwein) Starb.). On account of this it is misleading, 

 when Lindau (in Engler und Prantl: Natiirliche Pflanzenfamilien I, 

 1** p. 385) classes Pseudodiplodia among (Nectrioideae-Zythieae-)Phae- 

 odidymae. After analogy from Nectria and owing to the supernumerary 

 of the light-spored species it would be better to class the genus under 

 Hyalodidymae; most correct it would be to place it under a group (Nec- 

 trioideae-Zythieae-)Didymosporae quite without reckoning with the colour 

 of the spores. 



St. Jan: America Hill 17.3.06 (nr. 1731). 



Hyphomyceteae. 



Chromosporium formicarum Ferd. et Wge. sp. n. PI. II, fig. 11. 



Mycelio lignum cariosum penetrante, tenuissimo; conidiis in ramulis 

 Curtis acrogenis, pedicello hyalino secedentibus, globosis, guttulis oleosis 

 1—3 (plerumque 1) repletis, 6 — 9^ diam., sub vitro aurantiaco-pellucidis, 

 superficiem ligni pulvere luteo-ochraceo obducentibus. — Species habitatione 

 praedistincta, cavernas a formicis in ligno carioso fossas totum obtegens, 

 ibique solum, non extra crescens. (Teste cl. Raunkiaer). 



') Phycomyceten und Ascomyceten p. 8:2 (Schimper: Botanische Mittheilungen 

 aus den Tropen, Heft 9). 



