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Nag Raj, T.R. 1982: Genera coelomycetum. XX. Crucellisporiopsis anam. gen. nov., a discomycete analog. Canadian Journal of Botany 60: 2601-2607.

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Nag Raj, T.R. 1982: Genera coelomycetum. XX. Crucellisporiopsis anam. gen. nov., a discomycete analog. Canadian Journal of Botany 60: 2601-2607.
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Foliicolous, associated with leaf spots. Conidiomata stromatic, amphigenous, scattered to gregarious, intraepidermal in origin, initially appearing as straw-coloured, minute specks, then becoming erumpent through the overlying host tissue and appearing as yellowish to orange yellow, gelatinous crusts, variable from acervuloid and irregularly divided to shallow cupulate, 140-310 µm diam., 150-190 µm deep; basal stroma up to 50 µm deep, of "textura angularis" of thick-walled, hyaline cells aggregated in the host epidermis and merging into a moderately developed excipulum of "textura prismatica" and "textura intricata" of thick-walled, hyaline elements in gel. Conidiophores arising in the concavity of the conidioma, septate, branched, hyaline, thin and smooth walled, branches terminating in conidiogenous cells and sterile hyphae, invested in mucus. Sterile hyphae filamentous, apex blunt, simple or occasionally irregularly branched and irregularly coiled in the apical part, septate, hyaline, smooth walled, 140-210 µm long, 2 µm wide at the base, and 1.5-2 µm wide at the apex. Conidiogenous cells phialides, cylindrical to subcylindrical, hyaline, smooth walled, 15-18 x 1-1.5 (mean = 16.6 x 1.2) µm, proliferating percurrently once or twice, invested in a thin layer of mucus. Conidia blastic-phialidec, mostly tetraradiate, occasionally five radiate; main axis clavate to subcylindrical, zero to one septate, cells unequal, base narow-truncate with minute marginal frills, hyaline, smooth walled, guttulate, 15-22 x 1.5-2 (mean = 18.2 x 1.7) µm, bearing a simple, attenuated, tubular appendage 2-10 µm long; arms three (to four), inserted at different loci at the apex of the main axis and separated from it by septa, attenuated, two to five septate, hyaline, smooth walled, without constrictions at the septa, 45-78 (mean = 60) x 1.5 µm.
KNOWN DISTRIBUTION: New Zealand.
HABITAT: On decaying leaves of Weinmannia racemosa L.
Foliicola, maculicola. Conidiomata stromatica, amphigena, dissita ad gregaria, originem intraepidermalia, initio guttae minutae, stromaticae crescentia, deinde erumpenti, atque crustis gelatinosis, cemus ad aurantiacis praebenti, ab acervuloideo et irregulatim diviso vel vadoso cupulato varianti, 140-310 µm diam., 150-190 µm alt.; stroma basalis usque ad 50 µm cr., ex textura angularis e cellulis crassiparietibus, hyalinis, epidermide hospitis aggregatis, composita, et in excipulo moderate evoluto ex textura prismatica ad textura intricata transientia. Conidiophora cavitatem condiomatis enascentia, septata, ramosa, hyalina, laevia, ramuli in cellulis conidiogenis et hyphis sterilibus terminantes, in muco involuto. Hyphae steriles filamentosae, simplices vel interdum partem apicalem ramosae, apicem obtusam, partem distali irregulatim torsivae, septatae, hyalinae, laeviae, 140-210 µm long., ad basim 2 µm lat., et apicem 1.5-2 µm lat. Cellulae conidiogenae cylindraceae ad subcylindraceae, hyalinae, laeviae, 15-18 x 1-1.5 (mean = 16.6 x 1.2) µm, semel vel bis percurrenter prolificantes, in muco involuto. Conidia blasticophialidica, plerumque 4 radiata, subinde 5 radiata; axis principalis clavatus ad subcylindraceus, 0-1 septatus, cellulis inaequalibus, base anguste truncata cum minutis fimbriis marginalis praedita, hyalinis, laevis, guttulatis, 15-22 x 1.5-2 (mean = 18.2 x 1.7) µm, unam simplicem, attenuatam, tubularem appendicem 2-10 µm long. ferentis; brachia 3-4, apicem axis principalis ad ali loci inserta, et eo septiis sejuncta, attenuata, 2-5 septata, hyalina, laevia, haud constrictione ad septa, 45-78 (x = 60) x 1.5 µm.
The leaf spots, on which the conidiomata appear, are amphigenous, vein bounded, separate to occasionally gregarious and confluent, oval to irregular in outline, centre brown, rims dark brown, up to 20 mm diameter.
>For comparison with the two species of Crucellisporiopsis described above, photographic illustrations of Eriosporella calami (Figs. 15-20) are provided below. For generic and species descriptions of Eriosporella Höhn, and E. calami see Sutton (1980) and Nag Raj and DiCosmo (1980).
Sutton (1977, 1980) included Pseuderiospora Keissler and Pseuderiospora castanopsidis Keissler in the synonymy of Eriosporella and E. calami respectively. I have not been able to examine the type of P. castanopsidis, and cannot offer any comments on its status.
SPECIMEN EXAMINED: PDD 41405 (Holotype), Haast Pass, Westland, South Island, New Zealand, 31.111.1980, B. Kendrick.
Caulicolous or foliicolous. Conidiomata stromatic, variable from acervuloid and irregularly divided, to sessile or stalked shallow cups mimicking apothecia, scattered to gregarious, intraepidermal to intraperidermal in origin, erumpent, gelatinous; basal stroma and excipular tissue well developed. Conidiophores arising in the concavity of the conidioma, branched, septate, hyaline, smooth walled, branches terminating in conidiogenous cells and sterile hyphae, invested in mucus. Sterile hyphae simple or occasionally irregularly branched in the apical part, straight or irregularly coiled at the apex, septate, hyaline, smooth walled. Conidiogenous cells phialides, cylindrical or subcylindrical, hyaline, smooth walled, proliferating percurrently up to three times. Conidia blastic-phialidec, four or five radiate, hyaline, smooth walled; main axis short, clavate to narrow obconic or subcylindrical with a narrow truncate base bearing minute marginal frills, zero or one septate; arms three or four, divergent, attenuated, septate, guttulate, smooth walled, unequal; after secession of conidium, base of the main axis often drawn out into a narrow, protuberant appendage of varying length.
TYPE ANAMORPH SPECIES: Crucellisporiopsis gelatinosus Nag Raj
Caulicola vel foliicola. Conidiomata stromatica, acervuloidea et irregulatim divisa vel cupuaas sessiles ad pedicellatas apothecia similia, dissita vel gregaria, originem intra-epidermalia vel intra-epidermalia, erumpentia, gelatinosa; stroma basali et tela excipuli bene evoluta. Conidiophora cavitatem conidiomatis enascentia, ramosa, septata, hyalina, laevia, ramuli in cellulis conidiogenis et hyphis sterilibus terminantes, muco involuta. Hyphae steriles simplices vel partem apicalem irregulatim ramosae, apicem rectae vel irregulatim torsivae, septatae, hyalinae, laeviae. Cellulae conidiogenae phialides, cylindraceae vel subcylindraceae, hyalinae, laeviae, usque ad ter percurrently prolificantes. Conidia blastico-phialidica, 4-5 radiata, hyalina, laevia; axis principalis brevis, clavatus vel anguste obconicus vel subcylindraceus, basi anguste truncatis cum minutis fimbris marginalibus, 0-1 septatis; brachia 3-4, divergentia, attenuata, septata, guttulata, inaequalia; in conidia liberata, basis axis principalis saepe in unam, longitudinum differentem, protrudentem appendicem producta.
Two anamorphs, one on decaying leaves of Weinmannia racemosa from New Zealand and the other on unidentified twigs of a tree from Venezuela, appeared superficially similar to Eriosporella calami (Niessl) Höhn. Both collections possess tetraradiate conidia (Figs. 4, 13) and percurrently proliferating phialides (Figs. 8, 12) borne in stromatic conidiomata. The anamorph from New Zealand has acervuloid to shallow cupulate, but gelatinous, conidiomata (Fig. 9) appearing as yellowish to orange yellow erumpent crusts. The conidiomata of the anamorph from Venezuela, on the other hand, mimic apothecia (Figs. 1, 2), the true nature of the fungus becoming apparent only after close scrutiny (Figs. 3-8). Both anamorphs have septate sterile elements which arise as branches of the conidiophores. In the New Zealand collection, they are coiled at the apices, but remain straight in the Venezuelan specimen.
Of the coelomycetes with tetraradiate conidia, only two anamorph genera need to be considered for comparison with the unnamed collections mentioned above. Eriosporella was proposed by Höhne1 (1916) to accommodate Cryptosporium calami Niessl. According to Sutton (1980), E. calami has eustromatic condiomata consisting of a central locule, a thin basal wall, and a thicker lateral wall extending into the disorganized epidermal tissue around the conidioma; walls composed of hyaline, thin-walled textura angularis to textura intricata; hyaline, branched, septate conidiophores; and phialidic conidiogenous cells with minute apertures and apically thickened periclinal walls, but without collarettes (cf. Fig. 267B, Sutton 1980). Although Sutton makes no mention of sterile elements, his illustration of conidia inside the conidioma (Sutton 1980, Fig. 266B) could be interpreted as representing such elements. An illustration of E. calami prepared from an isotype specimen in DAOM by Nag Raj and DiCosmo (1980) does not agree with Sutton's account of the fungus. The conidiogenous cells are actually annellides and the illustration given by these authors confirms that the conidiomata of E. calami lack sterile elements. Crucellisporium Farr has conidiomata with sterile elements, and tetraradiate conidia, but can be ruled out as a possible taxonomic niche for the two unnamed congeneric collections by its holoblastic-sympodial conidium ontogeny (Nag Raj 1974; Nag Raj and Kendrick 1978). A new anamorph genus is, therefore, necessitated.

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5 March 2010
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