Phylum:Ascomycota >> Class: Ascomycetes >>  Order: Boliniales 
 BCRC Number NO BCRC Number!  
 Scientific Name: Diaporthe eres

Basionym: Diatrype verrucella Fries, Sum. Veg. Scand. 385. 1845.

Diaporthe eres Nitschke, Pyren. Germ. 245. 1867.

 Description: Perithecia singly or in small group, embedded within bark tissue and partly in wood, often beneath the decomposed pycnidial stroma, globular or flattened at the bottom, 200 - 450 μm in diam., with neck at the top; wall composed of flattened, dark, thick-walled cells, innermost cells being strongly flattened, hyaline and thin-walled. Necks cyclindric, black, 180 - 820 μm in length, singly or collectively erumpent through bark periderm or decomposed pycnidial stroma, penetrated by a pore furnishing hyaline periphyses. Blackened zone present within bark and wood, thin, enveloping several perithecial pustules. Asci clavate or cyclindric-clavate, with apical ring in the thickened tip, 31.3 - 65 × 3.8 - 6 μm in size and 52.5 × 4.8 μm in average, 8-spored, loosed irregularly in perithecium. Ascospores irregularly biseriate, elliptic to fusoid, straight or inaequilateral, narrowly rounded toward the ends, hyaline, 2-celled, slightly constricted at the septum in full maturity, 8 - 13.8 × 2.3 - 3.8 μm in size and 10.8 × 3 μm in average. Two types of conidia are produced acrogeneously on the conidiophores, one is the socalled alpha conidium or α-spore, and is elliptic to fusoid, unicellular, hyaline, 5.8 - 9.5 × 2.5 - 4.8 μm in size and 7.6 × 3.6 μm in average; the other beta conidium or β-spore is filiform or acicular, straight or hooked, unicellular, hyaline, 30 - 48.8 × 0.8 - 2.5 μm in size and 40.3 × 1.6 μm in average.

Chiayi, on Bauhinia variegata L., 29 Oct 1990, D79-1. Taichung: Kukuan, on Euphorbia pulcherrima Willd. ex Klotzsch, 17 Jul 1990, D-16. Taichung: Takeng, on Macaranga tanarius (L.) Muell.-Arg., 4 Jul 1990, D-4. Taichung: Takeng, on Mallotus japonicus (Thunb.) Muell.-Arg., 4 Jul 1990, D-3. Taichung: Takeng, on Manihot esculenta Crantz., 4 Jul 1990, D-7. Nantou: Hueysuen forest, on Sapium discolor Muell.-Arg., 25 Jul 1990, D-22. Chiayi, on Douralis hebecarpa Warb., 31 Jul 1990, D-23. Taoyuan: Lalasan, on Litsea acuminata (Blume) Kurata, 5 Apr 1991, D80-1. Taoyuan: Lalasan, on Persea zuihoensis (Hayata) Li, 5 Apr 1991, D80-4. Nantou: Hueysuen forest, on Litsea cubeba (Lour.) Persoon, 2 Jun 1991, D80-8. Nantou: Chunghsing new village, on Erythrina crista-galli L., 6 Jul 1990, D-9. Chiayi, on Sesbania roxburghii Merr., 8 Jul 1990, D-13. Taichung, on Psidium guajava L., 8 Jul 1990, D-8. Miaulih: Jwolan, on Averrhoa carambola L., 11 Jul 1990, D-15. Taichung: Anmaashan, on Passiflora edulis Sims. 1 Oct 1990; D-33. Taichung: Chunghsingliing, on Eriobotrya japonica Lindl., 11 Jul 1990, D-14. Taichung: Anmaashan, on Rubus trianthus Tocke, 2 Oct 1990, D-38. Chiayi, on Euphoria longana Lam., 31 Jul 1990, D-24, Nantou: Hueysuen forest, on Paulownia fortunei Hemsl., 2 Jun 1991, D80-7. Taichung: Kukuan, on Smilax china L., 17 Jul 1990, D-46. Chiayi: Alishan, on Camellia sinensis (L.) Ktze., 9 Oct 1990, D-43. Taoyuan: Lalasan, on Eurya japonica Thunb., 5 Apr 1991, D80-2. Taichung: Kukuan, on Trema orientalis (L.) Blume, 18 Jul 1990, D-17.

 Habitat: Lignicolous. On branches of angiosperm.

Asia (Japan, Taiwan), Europe and North America.


Kobayashi, T. 1970; Tsay, JG and Hsieh, WH. 1993.


J. G. Tsay

 Note: null