which insert themselves into the host's vascular system.
In a controlled greenhouse study of another rare hemiparasite
, Schwalbea americana L.
Successful culture of the rare annual hemiparasite
Tornanthera auriculata (Michx.
Su ch parsimonious explanations may be relevant to many species of despotic animals that have been studied and possibly even to plants, where a kind of despotism is also described (for a study on a hemiparasite
, see Prati et al.
Loveys BR Tyerman SD and Loveys BR (2001) Transfer of photosynthate and naturally occurring insecticidal compounds from host plants to the root hemiparasite
Santalum acuminatum (Santalaceae).
We compare in vivo gas-exchange data and in vitro RUBISCO activity for a holoparasite (Orobanche corymbosa), a hemiparasite
(Pedicularis canadensis), and a nonparasite (Antirrhinum majus) in the family Scrophulariaceae.
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.
Striga is an obligate hemiparasite
and presents a particular threat to crop production since most of its damaging action occurs underground, before the parasitic plant emerges, and is therefore out of reach of most control measures.
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).
la) started a project looking at root parasitism in the genus Schoepfia (White Wood), a hemiparasite
in the Olacaceae.
Relative to three epiphytes recorded, only one was determined concerning the dispersal mode (zoochoric), and the single registered hemiparasite
, Psittacanthus dichrous Mart.
wightii is a hemiparasite
and therefore capable of photosynthesis, it is very difficult to grow this species without a host (personal observation).
A study of the root hemiparasite
Rhinanthus minor led to similar conclusions (Gibson and Watkinson 1992).
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.
The genus is characterized by the following traits: stem hemiparasites
rarely with long epicortical roots; bisexual flowers ultimately arranged in dichasia, often with the central flower aborted, and subtended by a main bract and two lateral bracteoles (Suaza-Gaviria et al.