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PCA Alien Plant Working Group - Common Buckthorn (Rhamnus cathartica) |
 | | Rhamnus caroliniana), is a lovely native shrub that has finely toothed leaves somewhat resembling those of fl cherry, and are smooth on the underside; it produces attractive fruits from August to October. |
 | | Alder buckthorn (Rhamnus alnifolia), is a low-growing shrub that may grow to a maximum of 3 feet in height, and has leaves with 6-7 pairs of veins. |
 | | An investigation of the invasive shrub European Buckthorn, Rhamnus cathartica L., near Saskatoon, Saskatchewan. |
| www.nps.gov /plants/alien/fact/rhca1.htm (1150 words) |
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