Phragmidium Link 1816 [1813]

Caption:

Details

Name scientific

Phragmidium Link, Ges. Naturf. Freunde Berlin Mag. 7 30 (1816 [1813])

Preferred name

Phragmidium Link 1816 [1813]

Biostatus

Origin

Occurrence

Georegion

Schema

Biostatus source

Comment

Present

New Zealand

Political Region

Nomenclature

Authors

Link

Original authors

Link

Publication place

Link, J.H.F. 1815: Observationes in ordines plantarum naturales. Dissert. secunda. Gesellschaft Naturforschender Freunde zu Berlin, Magazin 7(1): 25-45.

Year published

1816

Year on publication

1813

Publication page

Nomenclatural code

ICN

Basionym

Phragmidium Link 1816 [1813]

Taxonomic rank

genus

Canonical form

Phragmidium

Classification

Kingdom

Fungi

Phylum

Basidiomycota

Class

Pucciniomycetes

Order

Pucciniales

Family

Phragmidiaceae

Genus

Phragmidium

Subordinates

Synonyms

Associations

View full associations record

Association type

Associated organism

Association source

has host

Acaena anserinifolia (J.R.Forst. & G.Forst) J.B.Armstr.

McKenzie, E.H.C.; Johnston, P.R. (1999)

has host

Acaena

PDD (3 records from New Zealand.)

has host

Acaena agnipila var. protenta Orchard 1969

PDD (1 records from New Zealand.)

has host

Acaena anserinifolia (J.R.Forst. & G.Forst) J.B.Armstr.

PDD (5 records from New Zealand.)

has host

Acaena novae-zelandiae Kirk

PDD (3 records from New Zealand.)

has host

Rosa

PDD (1 records from New Zealand.)

has host

Poterium sanguisorba L.

PDD (1 records from United Kingdom.)

Descriptions

Anon.: NZFUNGI (unassigned reference).

Phragmidium Link 1816 [1813]

Notes

The sexual teleutospores formed in in pulverent or pulvinate sori. Spores stalked, becoming detached at maturity, transversely septate, more than 2-celled, all cells with 2 pores.

There are 8 Phragmidium species in New Zealand, 4 endemic and 4 exotic. Only those listed below have descriptions or images available from NZFungi.

McKenzie, E.H.C. 2008: Rust fungi in the subantarctic islands of New Zealand. Mycoscience 49: 1-10.

Phragmidium Link 1816 [1813]

Collections Examined

Campbell Island, east of Beeman Hill, on Acaena sp. [Rosaceae], March 6, 2000, E.H.C. McKenzie (PDD 83399 – II, PDD 83462 – II).

Description

Uredinia hypophyllous, orange, pulvinate, pulverulent, mainly circular, sometimes oval, up to 0.75 mm long, with peripheral paraphyses; paraphyses up to 90 µm long, hyaline, curved, sometimes capitate (up to 16 µm wide) or only slightly swollen at apex, wall 1.5–2.5 µm thick. Urediniospores 19.5–22(–28.5) × 18–21 µm, subglobose, ellipsoidal, obovoid or pyriform, contents orange, becoming white when old and dried, wall 0.5–2 µm thick, hyaline, verruculose, germ pores 6–8, scattered.

Notes

Four species of Phragmidium have been described from New Zealand on species of Acaena. They are distinguished from each other primarily on characters of the teliospores, especially average length and number of cells. There is little if any difference between their urediniospores. Unfortunately, neither of the collections from Campbell Island possess teliospoteliospores, and it is thus impossible to determine the species.