Plantparasieten van Europa

bladmineerders, gallen en schimmels

gallers on genus Lycopsis

Dichotomous table for gallers on Lycopsis arvensis

by Hans Roskam

1a Galls on parts above ground => 2

1b Side roots often with many nodular to spindle-shaped swellings, which bear some lateral roots. Meloidogyne hapla

2a On flowers or inflorescences => 5

2b On vegetative organs => 3

3a Large parts of plant disfigured => 4

3b Leaf blade, especially in venation, with rotund to ± acuminated, oval, often conspicuous yellow to yellow-brown swellings, occurring especially on underside, which are marbled, sieve-like. Occasionally on stems. Puccinia recondita

4a Growth stunted, leaves rolled downwards, curled. Also on disfigured, ± etiolated flowers. Dictyla echii

4b Basal stem parts variously swollen, spongy ± pale green. Ditylenchus dipsaci

5a Inflorescence clustered, ball-like. Brachycaudus helichrysi

5b lowers greened, densely white pubescent, clustered, ball-like. Aceria eutricha

Laatste bewerking 18.xi.2023