Agrostis capillaris 3470 Porter and Peterson (1975)
Ceratophyllum
demersum
650 Reay (1972)
C. demersum 265–1121 Liddle (1982)
C. demersum 44–1160 Robinson et al. (1995)
Egeria densa 94–1120 Robinson et al. (1995)
Lagarosiphon major 11–1200 Robinson et al. (1995)
Rorippa naturtium
(subsp. Aquaticum)
>400 Robinson et al. (1995)
Cynodan dactylon 1600 Jonnalagadda and
Nenzou (1997)
Spergularia grandis 1175 Bech et al. (1997)
Paspalum tuberosum 1130 Bech et al. (1997)
Fern (Pteris vittata) 22,630 Ma et al. (2001)
Fern (P. vittata) 8960–27,000 Wang et al. (2002)
Silver fern
(Pityrogramma
calomelanos)
8350 Visoottiviseth et al. (2002)
Fern (Pteris cretica) 6200–7600 Zhao et al. (2002)
Fern (P. longifolia)
Fern (P. umbrosa)
Watercress (Lepidium
sativum)
12–1766 Robinson et al. (2003a)
Myriophyllum propinquum 974–3900 Machetti (2003)
Elodea canadensis 1628–1857 Machetti (2003)
Agrostis sp 800