This species is allied to quadrifolia but it is stouter, more vigorous, has wide tepals and larger, creeping rhizomes. The leaf whorls have between 7 and 11 leaflets, whilst the green and yellowish flowers are also composed of "multi-part-sets" of petals, sepals and anthers, again 4-8 is normal.
I was highly surprised however when our stock of this species produced lovely, large, ghostly greenish-white flowers. This is not typical for the true species and indeed our plant had all of the hallmarks of being a distinct, perhaps new, species. It seemed to be too different from other incompleta and yet it answers to no other Paris. The next year the same bed, containing the same plants produced all green flowers.
This plant has tremendous garden potential, it is highly decorative and once established (for this is never fast in Paris), it is second only to the fabulous japonica in display potential.
Not difficult, once established, (this can be slow) in a well drained, slightly shaded leaf soil outside, NOT a pot where the stresses are too great to allow it to establish and ours are happy under just these conditions.