Eragrostis pectinacea

Eragrostis pectinacea (Michx.) Nees (Am.) – A very rare and ephemeral alien. Between 1940 and 1949 recorded as a wool alien in the valley of river Vesdre near Verviers. In 2012 rediscovered on the unloading quay for cereals at the Amerikadok in the port of Antwerpen (a single specimen).

Eragrostis pectinacea is much reminiscent of E. pilosa and might have been overlooked. It is best distinguished by its much longer lower glumes that are at least half as long as the adjacent lemma.

Eragrostis pectinacea is widely naturalized and spreading in large parts of Europe (mainly on exposed river banks). Future occurrences in similar suitable habitats in Belgium (for instance on the banks of river Maas) are very likely.

Selected literature:

Koch S.D. (1974) The Eragrostis pectinacea - pilosa complex in North and Central America (Gramineae: Eragrostoideae). Illinois Biol. Monograph 48: 74 p.

Mosyakin S.L. & Bortnyak N.N. (1994) Eragrostis pectinacea (Michx.) Nees (Poaceae): novyi adventyvnyi vyd flory Ukrayiny. Ukr. Bot. Zhurn. 51(5): 89-93.

Röthlisberger J. (2002) Un Eragrostis nouveau pour la Suisse et autres découvertes intéressantes en Suisse romande. Saussurea 32: 123-128.

Scholz H. & Ristow M. (2005) Neue Nachrichten über die Gattung Eragrostis (Gramineae) in Mitteleuropa. Verhandlungen des Botanischen Vereins von Berlin und Brandenburg 138: 15-29.

Špryňar P. & Kubát K. (2004) Eragrostis albensis a E. pectinacea, dva nové cizí druhy trav pro kvĕtenu České republiky (Poaceae). Zprávy Čes. Bot. Společ. 39: 1-24.

Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith