But while parasites and hemiparasites
are commonly a minor component in other vegetation, epiphytes are an extremely rich component in some rainforests, such as the Atlantic Forest adjacent to the Caatinga (Stehmann et al.
Host preference of the federally endangered hemiparasite
Schwalbea americana L.
Influence of the host on three sub-Arctic annual facultative root hemiparasites.
Here I report the results of two years of field manipulations in which I investigated the role of the small, annual hemiparasite, Triphysaria pusilla (Benth.
Host selectivity and the mediation of competition by the root hemiparasite Rhinanthus minor.
I studied Castilleja wightii Elmer (Castilleja hereafter), a perennial hemiparasite
native to the coastal scrub community of the central California coast (Chuang and Heckard 1993).
The better growth of hosts in mould led to a higher number of flowers produced by the hemiparasites compared to the situation in sandy soil.
In addition to nutrients and water, the hemiparasites take photosynthetic products from their hosts (see, e.
Parasitic and competitive interactions between the hemiparasites Rhinanthus serotinus and Odontites rubra and their host Medicago sativa.