A myco-heterotroph is the parasitic plant partner in this relationship.
From the en.wikipedia.org
Carnivorous organisms ultimately rely on autotrophs because the nutrients obtained from their heterotroph prey come from autotrophs they consumed.
From the en.wikipedia.org
The sugars and other molecular components produced by the autotrophs are then broken down, releasing stored solar energy, and giving the heterotroph the energy required for survival.
From the en.wikipedia.org
More examples
An organism that depends on complex organic substances for nutrition
A heterotroph (/u02C8hu025Btu0259ru0259u02CCtrou028Af, -u02CCtru0252f/; u1F15u03C4u03B5u03C1u03BFu03C2 heteros = "another", "different" and u03C4u03C1u03BFu03C6u03AE trophe = "nutrition") is an organism that cannot fix carbon and uses organic carbon for growth...
An organism which requires an external supply of energy in the form of food as it cannot synthesize its own
(heterotrophs) Organisms that obtain their nutrition by breaking down organic molecules in foods; include animals and fungi.
(Heterotrophs) Animals or bacteria that do not photosynthesize or chemosynthesize and therefore depend for food and energy on organiz compounds produced by other species.*
(Heterotrophs) Consumers that are unable to produce, are constantly looking for source of organic nutrients from elsewhere.
(Heterotrophs) these are the organisms that utilize, reaerrange and decompose the complex materials, particularly the animals, bacteria, and fungi.
(Heterotrophy) Heterotrophic organisms are contrasted with autotrophic life forms in that their carbon needs derive from organic nutrients which they take up from the growth environment. ...
An animal that is unable to make its own food and relies on consuming nutrients from other organisms.