Flora of New Zealand Series

=*Chlorocyphella lichenicola Keissl. in A. Zahlbruckner, K. Keissler & H.H. Allan, Trans N. Z. Inst. 59: 313 (1928).

* Chlorocyphella lichenicola. Holotype: New Zealand. Wellington, Feilding [Kitchener Park], rainforest "in thallo sterili Lichenis ad folia Myrti bullatae, et in thallo Lopadii subcaerulescentis ad folia Polystichi vestiti et Alectryonis excelsis", H.H. Allan s.n. – W – not seen.

Description : Campylidia helmet-shaped, ±erect, convoluted, or geniculately appressed, superficial, fawn to blue-green or blue-black, matt, arising singly, scattered, often rather sparse, very variable in size and shape, mainly 300–800 μm long and 250– 600 μm wide when mature; wall 40–60 μm thick at base, tapering to 10 μm at tip, composed of two layers (in section), an irregular outer layer of arachnoid, branched, thick-walled hyphae, 3–3.5 μm wide, with granular incrustations often present on their walls, and air spaces present in the gaps formed by the hyphae; inner layer of thick-walled pseudoparenchymatous cells, textura angularis, cells irregularly subglobose to ellipsoidal or polyhedral, mainly 4– 9 μm diam., without air spaces, subhyaline to olivaceous, the cells towards the concave side adjacent to the conidiogenous layer mostly deeply pigmented, those above the conidiogenous region often with papillate projections. Conidiophores simple or branched near base, septate or unicellular, hyaline, ellipsoidal to subcylindrical, with 1–3 conidiogenous cells arising at about the same level, to 10 × 3 μm restricted to the concave surface of the conidiomata and not extending more than about ⅓ of the length. Conidiogenous cells probably enteroblastic, phialidic with minute apical thickenings, arising from the conidiophores or sometimes apparently from the innermost wall cells, hyaline, smooth-walled, subcylindrical, slightly wider at base but not ampulliform, 10–12 × 2.5–3.5 (–4) μm. Conidia abundant, arising singly, filiform, scolecosporous, arcuate to C- or S-shaped or otherwise convoluted, slightly thicker at rounded apex, truncated and to about 1 μm at the extreme base, hyaline, multiseptate, with up to 8 septa at maturity, often with numerous guttules, smooth-walled, 55–80 × 2–3 μm.

N: Wellington (Kitchener Park Feilding). On sterile lichens on the leaves of Myrtus bullata, and on thalli of Calopadia subcoerulescens on leaves of Alectryon excelsus and Polystichum vestitum. Known also from Brazil, China, Cuba, Ghana, Zaïre, Surinam, the United States and Papua New Guinea (Hawksworth 1981: 63; Sérusiaux 1986: 29).

Pantropical

Illustrations : Hawksworth (1981: 61, fig. 30F; 62, fig. 31A, B); Sérusiaux (1986: 27, figs 61–63; 28, figs 64–70).

* Pyrenotrichum splitgerberi is characterised by: the lichenicolous habit; scattered fawn to blue-green or blue-black campylidia; and conidia simple, filiform, multiseptate, curved to C- or S-shaped or variously convoluted, 50–80 × 2–3 μm [conidia of this type are also produced in the genera Calopadia and Tapellaria (Sérusiaux 1986: 29)].