Sutton, B.C. 1971: Coelomycetes. IV. The genus Harknessia, and similar fungi on Eucalyptus. Mycological Papers. 123.
Show more
Details
Sutton, B.C. 1971: Coelomycetes. IV. The genus Harknessia, and similar fungi on Eucalyptus. Mycological Papers. 123.
Book
Associations
Descriptions
SPECIMEN EXAMINED Harknessia globosa folder in Herb. IMI. On Eucalyptus globulus, Taranaki, New Zealand, x. 1922, W. Smith, type of H. globosa (21815).
Fructifications abundant, amphigenous, separate, immersed, subepidermal, globose to subglobose, unilocular, erumpent and punctate, 300-400 µ diam.; basal and lateral walls of the stroma evenly 4-8 cells thick, of subhyaline to pale brown, thin-walled pseudoparenchyma, becoming hyaline towards the conidiogenous region; no definite ostiole is present but the pale brown pseudoparenchyma is of a loose texture in the apical region of dehiscence and forms the furfuraceous border. Conidiogenous cells formed from the inner cells of the stroma wall, long lageniform, 4-6µ wide at the base and 1-septate approximately 5-7~t from the base, 2.5-3.5~t wide towards the apex, hyaline, smooth. walled, unbranched 16-29 µ, long. Conidia holoblastic, aseptate, globose to subglobose, dark brown, with a large, central, globose to irregular guttule, smooth-walled, 14-16 (14.5) x 12-13.5 (12.5) µ, with the conidiogenous cell persisting as a cylindrical, hyaline, basal appendage devoid of cytoplasm, 2-7 µ long.
Fructificationes abundantes, amphigenae, discretae, immersae, subepidermales, globosae vel subglobosae, uniloculares, erumpentes et punctatae, 300-400µ diam.; omnes massae nigrae conidiorum semper circumcinctae margine distincto furfuraceo; parietes basales et laterales stromatum 4-8 cellulis crassis, ex cellulis subhyalinis vel pallide brunneis pseudoparenchymaticis compositi, qui suet hyalinis versus partem cellulorum conidiogenorum; ostioli distincti absentes, sed pseudoparenchyma pallide brunneum texturis incohaerentibus marginem furfuraceum facit. Cellulae conidiogenae ex cellulis interioribus parietis stromatibus formatae, longae lageniformiae, ad bases 4-6µ latae et interdum 1-septatae, versus apices 2.5-3.5 µ, latae, hyalinae, laeves, non ramosae, 16-29 µ, longae. Conidia (blastosporae) aseptata, globosa vel subglobosa, laevia, atro brunnea, 14-16 (14.5) x 12-13.5 (12.5) µ, cum guttula centrali globosa vel irregulari et appendice hyalina nonramosa basali ex conidiophoro persistenti oriunda, 2-7 µ longa.
In foliis emortuis Eucalypti globuli, Taranaki, New Zealand, 2 Oct. 1922, W. Smith, typus (21815).
Cited scientific names
Metadata
1cb0e1d6-36b9-11d5-9548-00d0592d548c
reference
Names_Fungi
10 September 2004