Vegetative key to the families

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ROOTLESS EPIPHYTIC PARASITES.
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Stems thread-like, leafless or almost so, forming tangled masses over the host and attached to the host by haustoria
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Stems yellowish or reddish. Usually parasitic on herbs Convolvulaceae
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Leafless parasitic twiners Cuscuta
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Stigmas capitate
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Staminal scales 2-fid. Corolla lobes ovate, obtuse. Styles shorter than the ovary. Capsule 3–4 mm diam. Chiefly coastal swampy areas. Parasitic on a variety of species but particularly Polygonum and Persicaria. Fl. summer. Australian Dodder Cuscuta australis
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Staminal scales fimbriate but not 2-fid. Corolla lobes deltoid, acute. Styles as long as the ovary. Capsule 2–3 mm diam. Widespread on leguminous plants. Introd. from Europe. Fl. summer. Golden Dodder Cuscuta campestris