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., 2009; Zappi et al., 2015).
Host preference of the federally endangered hemiparasite
Schwalbea americana L.
Autotrophy and heterotrophy in root hemiparasites. Trends in Ecology and Evolution 4:258-263.
Influence of the host on three sub-Arctic annual facultative root hemiparasites. I.
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.) Chuang & Heckard (formerly known as Orthocarpus pusillus; Scrophulariaceae; hereafter, Triphysaria) in a coastal prairie community.
Relative to three epiphytes recorded, only one was determined concerning the dispersal mode (zoochoric), and the single registered hemiparasite
, Psittacanthus dichrous Mart.
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).
Both partial defoliation of the host plant Agrostis capillaris, especially when timed to a certain developmental phase of the parasitizing Rhinanthus serotinus plant, and soil quality were shown to influence growth and flower production of the hemiparasite. 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.
Parasitic and competitive interactions between the hemiparasites Rhinanthus serotinus and Odontites rubra and their host Medicago sativa.
We studied this relationship with Agrostis capillaris, a perennial grass, and Rhinanthus serotinus, an annual facultative root hemiparasite, both plant species common in different types of grassland vegetation.