EPILOBIUM PETRAEUM (ONAGRACEAE), A NEW SPECIES OF ALPINE WILLOW-HERB FROM NEW-ZEALAND

Epilobium petraeum Heenan is described as a new species from mountaino us regions of central and north-eastern South Island, New Zealand. Thi s perennial and entirely glabrous herb had previously been included in E. crassum Hook.f. It is recognised by a low, spreading and compact h abit, red stems, opposite, dark-green, glossy leaves with the upper mi drib usually red, and papillose seeds with a non-persistent coma.