Excipulum_composed of parallel, short-celled hyphae, 7-8 µ wide, with thin, soft, red brown walls, lying at a low angle to the surface.

Apothecia sparsa, erumpentia, stipitata, ceraceo-mollia, glabra, purpureobrunnea; cupula patelliformis, margine integerrimo, disco planiusculo vel convexiusculo, latit. 3 mm.; stipes subaequalis, saepe curvatis, deorsum incrassatulus. Asci cylindraceo-clavati, octospori, 110-125 x 10 µ, apice jodo coerulescentes; ascosporae ellipsoideae, 12-14 x 4-5 µ; paraphyses filiformes, crassit. circiter 2 µ,.

In foliis dejectis Griseliniae littoralis, (Cornaceae), 20.10.1949, Dingley 19046 (typus).

Spores I2-I4 x 4-5 µ.

Holotype. Ruapehu, Auckland, New Zealand, J. Dingley, leaves of Griselinia littoralis, 20 Oct 1949 (K ex PDD 19046; isotype PDD).

STROMA. Substratal, evident as single or double black lines extending irregularly along the leaf blade especially toward the margin, in section the black lines consisting of a rind of cells with differentially pigrnented walls, in surface view the individual cells irregular to epidermoid. Unknown in culture. MACROCONIDIAL STATE. Unknown. SPERMATIA. Unknown. APOTHECIAL MORPHOLOGY. Apothecia 1-3 mm in diam, to ca. 1.5 mm high, when fresh purple-brown (Dennis, 1961), flat to slightly convex, drying cupulate, hymenium brick red, receptacle purple-black to black, concolorous with the stipe which is eccentric, tapering toward the base; rehydrating flat and lighter when dry. APOTHECIAL ANATOMY. Asci 8-spored, (85-)90-110(-125) x 8-10 µm, produced from croziers, cylindric to slightly clavate, tapering slightly below toward the base and there slightly expanded to form a small foot; wall 1-2 µm thick, 2-3 µm at the rounded apex; pore J+, the walls outlined deep blue in Melzer's reagent. Ascospores (11-)12-14(-15) x (3-)4-5 µm, biseriate above and uniseriate below or uniseriate throughout, hyaline, ellipsoid, smooth, in outline inequilateral, generally slightly broader at anterior end than posterior, rarely slightly indented and subreniform; with two, large, internal polar guttules, the anterior one frequently larger than posterior, occasionally breaking into smaller guttules. Paraphyses slightly exceeding the asci, hyaline, rarely branched and septate, filiform, 2-3 µm wide at the rounded apex. Subhymenium to ca. 40 µm broad, whole layer vertically oriented and subliyaline to lightly pigmented, not refractive; consisting of narrow, tightly interwoven hyphae with thick, smooth, hyaline to lightly pigniented walls. Medullary excipulum well developed, not refractive, consisting of loosely to tightly interwoven, branched, septate hyphae 4-7 µm wide, with frequently coarsely roughened and pigmented walls. Ectal excipulum: inner ectal excipulum well developed, 3 to several layers broad, tapering from ca. 10 µm broad toward the margin to ca. 25 µm broad toward the stipe; consisting of parallel to slightly interwoven, tightly to loosely compact hyphae, 2-5 µm wide, the individual cells shortest and narrowest toward the margin and longest and broadest toward the stipe, with coarsely roughened and lightly pigmented walls (roughenings and pigmentation more intense and obvious toward the margin). Outer ectal excipulum not refractive or only slightly so, tapering from ca. 15 µm wide toward the margin to ca. 30 µm wide toward the stipe; consisting of a well-developed textura prismatica of 2-4 parallel hyphal layers extending at low to high angles to the surface of the apothecium, the individual cells frequently becoming disrupted and losing hyphal orientation and with hyaline to lightly pigmented and smooth, to coarsely roughened walls with granular deposits between adjoining cells. Outer covering layer present, generally well developed, but occasionally becoming detached from the outer surface and appearing naked, 0-2 layers of narrow hyphae with lightly to intensely pigmerited and coarsely roughened walls; individual hyphae becoming modified apically, with the terminal or the last two to three cells becoming greatly expanded and constricted at their septa; several apically free tips often detaching together and appearing scale-like. Hairs absent, but the apical cells of the hyphae of the outer covering layer become modified and appear hairlike. Margin narrow, constructed similarly to the upper portion of the apothecial flank, the apically free cells less expanded. Stipe constructed similarly to lower portion of the flank of the apothecium, the entire surface clothed with the apically free cells of the outer covering layer.

Known only from the type collection.

Leaves of Griselinia Iittoralis Raoul.

Dennis, Kew Bull. 15: 305, fig. 19. 1961.

When Dennis (1961, 1964) treated L. griseliniae, he failed to detect the black line stroma present on the leaves of the host plant and placed the species in the Helotiaceae. With the report here of the presence of a stroma, this species is surely a member of the Sclerotiniaceae, and is placed in the gentis Lanzia following the concept of Dumont (1972). This species appears to be most closely related to "Rutstroemia longipes" and "R. luteovirescens." In R. longipes the apothecia emit a reddish brown to purplish dye in 2% KOH, while in L. griseliniae a faint yellowish dye is given off. Rutstroemia longipes also lacks the characteristic outer covering layer of L. griselinae. Lanzia griseliniae is most easily distinguished from R. luteovirescens by characters of the ascospores. In L. griseliniae the ascospores are flattened on one side and slightly broader at one end, while in R. luteovirescens they are rarely slightly inequilateral, but not flattened on one side and both ends are more or less equal.

[Notes from Kew Type specimen, PRJ 2010] Apothecia dry, hym deep orange-brown,

NEW ZEALAND: Auckland, Ruapehu, 3000', on leaves of Griselinia littoralis, 20 x 1949, leg. J.M. Dingley, ex P.D.D. 19046 (Holotype, K).

STROMA substratal, poorly developed, evident as slight blackening of the leaf surface in places, and weak stromatic lines. APOTHECIA hypophyllous, erumpent, stipitate, solitary. DISC 1.5-3.0 mm diam., shallow concave or depressed around a convex centre, smooth, purple-brown when fresh (Dennis, 1961), dull orange-brown to brick red when dry, rehydrating orange. RECEPTACLE cupulate, reddish brown, slightly darker than the disc, and darker towards the stipe, minutely scurfy except at the extreme margin. STIPE central, cylindric, usually shorter than disc diameter, concolorous or dark brown when rehydrated, curved, distinctly scurfy. ASCI 8-spored, cylindric-clavate, tapered below to a short stalk-like base, apex broadly rounded, measuring (95-)100-120 x 7.5-9.5 µm, pore up to 2 µm deep, outlined strongly blue in Melzer's reagent. ASCOSPORES ellipsoid, broadest above centre, often inequilateral, hyaline, containing 2 large or several smaller guttules, non-septate, obliquely uniseriate or partially biseriate, 11.5-14.5 x 3.5-4.8, mean 12.8 (SD 0.8) x mean 4.2 (SD 0.3) µm. PARAPHYSES filiform, obtuse, hyaline, rarely septate, unbranched, equal to the asci, 1.5-2.0 (-2.5) µm diam., slightly enlarged towards the apex to 2-3 µm diam. SUBHYMENIUM indistinct, c. 20 µm thick, composed of loosely interwoven, vertically orientated subhyaline hyphae 2.5-4.0 µm diam. MEDULLARY EXCIPULUM composed in the receptacle of interwoven, hyaline or usually pale yellowish-brown thin-walled hyphae 4-6 µm diam., merging with the medulla of the stipe in which the hyphae are more compact, vertically arranged, pale brown, 3.5-4.5 µm diam., the walls granularly roughened due to irregular deposition of pigment. ECTAL EXCIPULUM in stipe and lower receptacle composed of hyaline prismatic cells, often with slightly thickened but not refractive walls, 13-18(-25) x 4-7 µm, forming a layer 20-35 µm thick, overlying a zone of vertically orientated brown to dark brown septate hyphae 3-5 µm diam. This zone is up to about 50 µm wide towards the stipe base, narrowing to 20 µm at the stipe apex, and disappearing in the receptacle. Ectal layer in receptacle 20-30 µm thick composed of pale brown, thin walled prismatic cells mostly 12-18 x 5-7 µm, arranged in rows at a low angle to the surface, longer and narrower at the margin. At the surface throughout, but more conspicuously developed on the stipe, the ectal cells are pigmented and give rise to free, hair-like extensions, clavate and often strongly expanded at the tips, constricted at the septa, dark brown at the base of the stipe, there up to 50 µm long, (5-)10-15 µm diam., with irregularly deposited often granular pigment. Towards the margin these elements are shorter, paler and less conspicuous, and no more than free, clavate hyphal tips 5-10 µm diam. These structures do not form a uniform surface layer on the stipe, but cohere irregularly to give the receptacle a scurfy appearance under a lens rather than a uniform downy covering

On leaves of Griselinia littoralis. New Zealand, known only from the type locality.