I stopped to photograph something else between campus and home and spotted this as well. What I have captured here are the plant's fruit.
From Missouri Botanical Garden, http://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?kempercode=a379 » “Woodbine is a fragrant, fall-blooming clematis that is somewhat similar in flower to sweet autumn clematis (C. terniflora), but lacks the tough, leathery leaves of the latter. It is native to eastern North America, including Missouri where it typically occurs in moist low woodland areas and thickets bordering streams, ponds and fence rows (Steyermark). It is a vigorous, deciduous, twining vine with a rampant growth habit. If given support, it will climb rapidly with the aid of tendrilous leaf petioles to 20'. Without support, it will sprawl along the ground as a dense, tangled ground cover. Features sweetly aromatic, 1.25" diameter, pure white flowers (each with 4 narrow petal-like sepals) in axillary panicles from late August to October in a profuse bloom which typically covers the foliage. This is a dioecious species, with the pistillate flowers giving way to attractive, plume-like seed heads (hence the sometimes common name of old man’s beard). Compound green leaves, each with 3-5 oval to elliptic sharply-toothed leaflets.”
Retired economics professor (“dismal scientist”). Married 40+ years to the love of my life; we have two grown daughters, both married, two granddaughters and a...