Botanische Staatssammlung München © 1995–2008
Data remain intellectual property of the data set authors.

Golovinomyces rogersonii U. Braun

Data Set Maintenance: Data set compiled and standard item. Data set author(s): Schubert K. (06-06-20).

Nomenclature: Current taxonomic status: accepted. Taxonomic rank: species. Erysiphaceae Tul. & C. Tul.; Erysiphales.

Type Information: Basionym: Golovinomyces rogersonii U. Braun.

Taxonomic Literature: Taxonomic notes: Differt a G. verbasci conidiis angustioribus, 12-20 µm latis, ascis saepe guttulatis; + hyphae of the mycelium branched, septate, thin-walled, almost smooth to verruculose, 2.5-7 µm wide; appressoria indistinct to nipple-shaped, solitary; outer peridial cells of chasmothecia irregular-sinuous, 10-25 µm diam., wall about 10-25 µm thick, composed of up to 5 appressed cell layers. Braun U., Delhey R., Dianese J. C. & Hosagoudar V. B. (2006), Schlechtendalia 14: 85-97.

Biogeography: Northern hemispheric. Continent: Northern America (USA). Country or state(s): Utah (USA).

Ecology: Biotroph; phytopathogenic; growing on stems, leaves, sepals (and pedicels), or fruits, epiphyllous (mainly) or amphigenous. Host or Phorophyte Taxonomy: Cordylanthus maritimus ssp. canescens (A. Gray) T. I. Chuang & Heckard; Cordylanthus, Scrophulariaceae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid (dark brown to blackish), orbicular (subglobose), forming independently from the host thallus or mycelium, not emerging (mostly more or less immersed in the dense mycelium), scattered or gregarious, .1-.15 mm in diam.. Margin: External filaments present (shorter than the diameter of the chasmothecia); not interlaced, mycelioid, straight, 2-9 µm in diameter, hyaline or pigmented (to yellowish or pale brown), mostly few (sometimes even rudimentary), growing all across the lower half of the ascocarp, flexuose, smooth or rough (verruculose-rugose), thin or moderatly thick (only slightly thickened), not ramified, aseptate or septate (sparingly septate).

Asci: 10-15 asci per ascocarp, globose (broadly obovoid, saccate), not stipitate or distinctly stipitate, 50-70 µm long, 25-45 µm wide; dehiscence unitunicate (terminal thin-walled part (oculus) 10-20 µm diam., often guttulate, with oil-droplets of different size).

Ascospores: 1–2 per ascus, spores 2 per ascus, broadly ellipsoid or ovoid, 15-28 µm long, 9-17 µm wide; septa absent.

Conidiomata: Present.

Conidiophores: Euoidium-type; not branched. Conidium Formation: Conidiogenous cells in chains. Conidia: Broadly ellipsoid, ovoid, doliiform, or citriform (limoniform); macroconidial (l/w ratio 1.4-2.6 (in mature conidia 1.4-2.0)), not branched, 20-40 µm long, 12-20 µm wide; aseptate; without distinct fibrosin body fibrosin bodies.

(report generated 04.Okt.2007)

In case that additional characters and states are required to be included in this data set, consult the LIAS Instructions to Participants and follow the procedures described there.