Aerial stem-parasitic shrubs (haustorial structure unknown). Leaves opposite. Inflorescencess axillary, a sessile involucrate head of 12-18 sessile flowers arranged mostly in triads on a short receptacle; involucral bracts decussate, each subtending a triad, imbricate, enclosing the developing flowers; bracts of the individual flowers usually 3, foliaceous and together enclosing the flower bud. Corolla 6-merous, gamopetalous, regular or nearly so. Anthers basifixed, immobile. Style simple, with a knob-like stigma. Fruit not known. Fig. 44.
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