BioImages: The Virtual Field-Guide (UK)
Phoma Sacc., 1880 (a form genus of coelomycetes)
| Notes (MWS) | The commonest form-genus of coelomycetes, Phoma form black medium thickness-walled, erumpent pycnidia on (usually) dead stems (occasionally leaves). The pycnidia produce simple conidia generally less than 15µm long, on short or imperceptible conidiophores. The conidia often contain two oil-droplets. Many of the species are host limited (or at least there are different names which have been applied to Phoma on different hosts). Phoma has been used as a taxonomic dumping ground for any coelomycete with simple hyaline spores. |
| Diagnostic features | Coelomycetes with medium thickness walled, erumpent pycnidia and simple, hyaline conidia generally less than 15µm long, on short or imperceptible conidiophores. Mostly on dead stems. The similar Phomopsis produces slightly larger and tougher pycnidia but is best distinguished by the longer conidiophores. Phyllosticta, with thinner walled pycnidia, is the equivalent on leaves. Cultural studies are needed to identify most spp. |
Sets of Photographs
These relate to individual finds ("biological records") of the organism.
| Taxon | Summary |  |
 |
 |
Date | Vice-county | Country |
|---|
| Phoma | Imperfect stage | 15 | 11 | 4 | 30 Jun 2010 | Dorset | England |
Subtaxa
| Rank | Taxon | |
 |
|
 |
|---|
| Anamorphic Species | Phoma cytospora (Vouaux) D. Hawksw., 1976 (a lichenicolous coelomycete) | 1 | |||
| Anamorphic Species | Phoma exigua Sacc., 1879 (a coelomycete) | ||||
| Anamorphic variety | Phoma exigua var. foveata (Foister) Boerema, 1967 (Potato Gangrene (A causative organism)) | 1 | |||
| Anamorphic Species | Phoma hedericola (Durieu & Mont.) Boerema, 1976 (an ivy leaf spot (causative organism)) | 5 | 3 | 3 | |
| Anamorphic Species | Phoma polygramma (Fr.) Sacc., 1884 (a coelomycete) | 7 | 5 | 2 | |
| Anamorphic Species | Phoma pomorum Thüm., 1879 (a coelomycete) | 1 | |||
| Anamorphic Species | Phoma prunicola Schwein., 1936 (Apple and Pear Leaf Spot) | 1 | |||
| Anamorphic Species | Phoma samararum Desm., 1828 (a coelomycete) | 1 | 10 | 1 |
Suggested Literature
Identification Works
| Boerema, G.H., de Gruyter, J., Noordeloos, M.E. & Hamers, M.E.C., 2004 | Phoma identification manual |
BioInfo (www.bioinfo.org.uk)
has 2 general literature references to Phoma (a form genus of coelomycetes)
Phoma may also be covered by literature listed under:
|
BIOTA (living things) |
Eukaryota (eukaryotes) |
FUNGI SS. (true fungi) |
ASCOMYCOTA (spore shooters) |
ASCOMYCETES (spore shooters) |
| Coelomycetes (via Phoma) | Fungi sl. |
BioInfo (www.bioinfo.org.uk)
has 117 feeding and other relationships of Phoma (a form genus of coelomycetes)
