I do not have this Clematis but an Evison book description states the following: a deciduous species native to China and Japan, very free-flowering with good seedheads similar to C. vitalba but not so vigorous. It is 2 cm in diameter, slightly scented star-like dull white flowers. Flowering period: midsummer to early autumn; height 4m (13 ft) zone 7 and pruning group 3. Hope this helps.

Thank you, dedith!

Susannes, don't have this clematis either but the Toomey and Leeds Encyclopedia lists this clematis in the book. It is described as follows:

The single, greenish white, flat, and star-shaped flowers are borne in large clusters on terminal shoots and in leaf axils. Each flower, measuring approximately 1.5 - 2 cm (0.5-0.75 in.) across, is composed of four non-overlapping and spreading tepals, densely hairy on the outside, and less so inside. The prominent stamens are cream colored. Stems are slender and somewhat hairy. Leaves are bright green, each with three rather thin, more or less triangular shaped leaflets.

Tolerates most well-drained garden soil but requires a sunny position to flower well.

Toomey and Leeds make no mention of scent.

Two other references which include Raymond Evison in his "The Gardener's Guide to Growing Clematis" and Christopher Grey-Wilson in his "Clematis The Genus" describe the flowers as being slightly scented or faintly scented.

Below is a link to this clematis on the COTW database.

Here is a link that might be useful: apiifolia on COTW

Thankyou!

I had checked out Clematis on the web earlier and was surprised to see that it says Clematis apiifolia is not fragrant.
dedith, too, mentioned Evison's comment on Clematis apiifolia only being slightly scented.
Westphal lists Clematis apiifolia with scented Clematis.
http://www.clematis-westphal.de/sortenliste/Sondergruppe3/Sondergruppe3.htm

Now I'm wondering whether it is worth being planted or whether there's another kind which has more scent.
I had been pondering on Clematis armandii, but was told that it needs far more sun than my little north-facing shade garden would offer.

I'm surprised at your info regarding armandii, as it is most commonly recommended as a shade tolerant vine in my area. I have found it will flourish in quite shaded conditions, but as with many vines, will grow towards stronger light if available. Mine is growing on the northeast corner of my north facing porch, so is out of direct sun for most of the day. It blooms very heavily in late February or early March and has a clear honey-vanilla scent.

Thank you for the info, Pam,
it gives me enough hope to try a Clematis armandii. Clematis on the Web lists the species and several varieties, do you know by chance which one is yours?