— 2521 



// 



Hyphis singulis pro ratione tenuissimis, flexilibus, sæpius ramosis, fuscis, 

 crebie septatis, i — oii. ut plurimum crassis, superne Chalarae modo 

 apertis, tubuliformibus, paulum infra tubulam apertam crassitudinem maxi- 

 mam, usque 9 ^, attingentibus. Conidiis endogenis, seriatim e tubulis 

 protrusis, dimorphis, aliis numerosissimis, hyalinis (catervatim brunneolo- 

 tinctis), cylindricis, utrinque truncatis, membrana tenui, intus vacuolatis, 

 10—12^ X 4 — 5//, aliis paucioribus, fuscis, ut plurimum ellipsoideo- 

 cylindricis, membrana crassiore, 1 — 2 vacuolatis, 10 — 13^ x 5^/2 — ^^l-ifx, 

 paucis infra ultrave. Conidiis fuscis in cellulis propriis versus basim 

 synnematis praecipue formatis, paucis autem, charactere sæpe intermedio, 

 in iisdem tubulis, in quibus conidia hyalina gignuntur, inventis, sem- 

 perque, quod si evenit, infra hyalinas observatis. 



Ad fructus semiputridos Tlieohroinatis Ca- 

 cao L., L a s T r i n c h e r a s Venezuelae. Aderat 

 Sterigmatocystisdipus noh'xs,. (Leg.H. Lassen). 



The coremia being connected with each 

 other at their base the fungus forms a to- 

 mentose cover over the substi^atum; the 

 single coremia produce from their upper 

 part an endless multitude of hyaline, thin- 

 walled conidia, and their habitus comes near 

 to that of a Stilhiim, to judge from a note 

 of the collector: "Fungus, white-greyisli in 

 the top". — While the Ghalareae until now 

 are known but in dematieous forms, i. e. the 

 conidiophores are always isolated, simple or 

 seldom slightly ramified hyphae, it has by 

 the discovery of this fungus been established 

 that also forms of the Stilbu7n-[y\n\s are in- 

 cluded in the family. The presence of this 

 typus was beforehand to be expected, as so 

 many hyphomycetes with exogene conidia 

 are forming coremia, and as also in a well- 

 known subgenus of Chalara {Synchalara v. 



Höhn.) the conidiophores are crowded closely together on a byssoideous 

 subiculum. 



As to the dimorphic conidia this phenomenon is previously noted 

 within the range of the Ghalareae. Thus Chalara heterospora Sacc. 

 presents partly 1 —3 septated, partly continuous conidia, and in Thiela- 

 viopsis paradoxa (de Seyn.) v. Höhn, is found, besides hyaline endogene 

 conidia, oidium-like chains of bigger, brown, apparently exogene conidia. 

 As to the dimorphic conidia of this fungus, v. Höhn el states (Hedw. 



Fig. 7. Stilhochalaradimorpha 

 gen. et sp. n. 



a : Conidiophores from the upper 

 part of the coremium; b: HyaUne, 

 thin-walled conidia; c; Brown, thick- 

 walled conidia. (a ; 220/j ; 6 and e : ^s/x) 



