Cashmere in twin set form is the root of many a family tree (along with grandma pearls and a river of G&Ts).

Not for Madison Marcus designer Jessica Sturman, who recently branched out with Twig, a budding line of untraditional cashmere knits.

Bright green sweaters with short puff sleeves, patch pockets, and oversize buttons keep your berries warm. Show off your stems with up-to-there sweater dresses in mock- and slouched-turtleneck styles. The cap sleeves, dainty pleats, and ribbed detailing will make kindling, so to speak, of humdrum office attire.

Colors like gray, black, and cobalt make the flattering pieces easy to graft into your existing fall repertoire. But their coquettish flair is sure to cause a stir at the country club.

In a word: Timber!

Available at Flicka, 1932 Fillmore Street, between Pine and Bush Streets (415 292-2315); online at basicboutique.com.