Figure 1.
Phlegmariurusvanuatuensis ARF1140: A habit, leaf arrangement and fertile spikes B close up of sterile leaf arrangement showing subopposite decussate leaf arrangement and ovate-oval leaves C close up of fertile spike showing scale like sporophylls and a sporangium. Scale bar: 10 cm (A); 1 cm (B, C). Illustration by A.R.Field.
It may have pretty purple flowers, but Eichhornia crassipes can be a green menace. Introduced to Africa from the neotropics, this invasive weed is choking Lake Victoria, the world’s second largest lake. Water hyacinth has carpeted vast stretches of the lake, fouling fishing nets and blocking harbors. Ari Daniel Shapiro teams with reporter in the field, Gastive Oyani, to speak with local fishermen and botanist Helida Oyieke. They learn how the lake and the lives of the people who depend on it are responding to this weedy challenge. read moreDuration: 5:30Published: Tue, 03 May 2011 17:32:59 +0000
2010.07.04 Czech Republic, esk Krumlov (mixed forest - mainly broadleaf, umava national park 825 m AMSL).Both are common, Filipendula flowering from june till august, Lupinus from june till september.Lupinus is not native and potentially invasive; the plant was introduced not only as ornamental plant but also as fodder (for deer too, seeded in forests) and for re-greening of roadside slopes after construction work - both worked (and still works) in favour of establishing this one in the Central European fauna.While Lupinus is potentially invasive it isn't as 'dangerous' as other species - actually it seems that Lupinus, a typical pioneering plant, is disappearing from habitats as soon as more competitive native plants manage to establish themselves there.German names: Gewhnliches Gross-Mdesss (Filipendula); Stauden-Lupine (Lupinus)ID: Fischer & al., Exkursionsflora (2008 3rd)