purple small-reed

synonym: Calamagrostis lanceolata

organ parasitic mode stage note taxonomic group parasite
leaf leaf spot incertae sedis Mastigosporium rubricosum
flower gall Anguinidae Anguina agrostis
leaf bud gall Cecidomyiidae Mayetiola lanceolatae
leaf down Erysiphales Erysiphaceae Blumeria graminis
leaf gall Anguinidae Anguina graminis
leaf gall Anguinidae Subanguina graminophila
leaf gall Eriophyidae Aceria tenuis
leaf miner Agromyzidae Cerodontha beigerae
leaf miner Agromyzidae Cerodontha calamagrostidis
leaf miner doubtful Agromyzidae Cerodontha imbuta
leaf miner Agromyzidae Cerodontha incisa
leaf miner Agromyzidae Cerodontha pygmaea
leaf miner Agromyzidae Cerodontha zoerneri
leaf miner Agromyzidae Chromatomyia nigra
leaf miner Agromyzidae Liriomyza flaveola
leaf pustule Cantharellales Ceratorhiza rhizodes
leaf pustule uredinia telia Pucciniales Puccinia coronata
leaf pustule uredinia telia Pucciniales Puccinia pygmaea
leaf pustule Ustilaginales Ustilago calamagrostidis
leaf pustule Ustilaginales Ustilago scrobiculata
leaf stripe Microbotryales Ustilentyloma brefeldii
leaf stripe Ustilaginales Ustilago striiformis
stem gall Cecidomyiidae Hybolasioptera fasciata
stem gall Cecidomyiidae Lasioptera calamagrostidis
stem gall Cecidomyiidae Mayetiola culacera
stem gall Eurytomidae Tetramesa calamagrostidis
root collar gall Cecidomyiidae Mayetiola bifida
leaf vagrant main Aphididae Schizaphis dubia
leaf vagrant Aphididae Diuraphis calamagrostis


the part of the plant that most conspicuously is hit by the parasite

all buds: both flower buds and leaf buds
flower: also inflorescence
leaf: also needle, phyllodium, petiole
leaf bud: also unfolding young leaf
fruit: also seed
root: also root stock, runners
root collar: also the lowest part of the stem
stem: also culm, the lower part of the peduncle, in grasses also leaf sheath
systemic: the entire above-ground plant.


borer: larva living internally, almost no outwards signs
down: 0.5-2 mm high fungal down
film: very thin cover of fungal tussue
gall: swelling and/or malformation
grazer: feeding at the outside of the plant
leaf spot discoloured, often ± necrotic, generally not galled, sign of a fungus infection
miner-borer: larve initially makes a mine, lives as a borer later
pustule: plug of fungal tissue, generally brown-black and < 2 mm
stripe: longitudinal line of fungal tissue in a grass leaf
vagrant: (aphids, mites) living freely on the plant, at higher densitiy causing malformations.


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The host plant spectre of a parasite is rarely known exhaustively; this applies in particular at the species level. It is advisable therefore to check at least also the list of all parasites of this genus.


mod 29.vi.2019