of the Warren region is the karri (Eucalyptus diversicolor), at 90m the tallest trees in Australia, in association with the three tingle trees, which are endemic to this coast: rates tingle (E. brevistylis), red tingle (E. jacksonii) and yellow tingle (E. guilfoylei). Karri has a thick undergrowth of flowers and shrubs such as coral vine (Kennedia coccinea). The most important plant families are Fabaceae (including the colourful wisteria, Hardenbergia comptoniana), Orchidaceae, Mimosaceae, Myrtaceae and Proteaceae. The karri forest occurs in deep loam, and covers nearly half of the region. Although very moist in winter, it is not considered to be a rainforest because the dry season precludes the establishment of a characteristic rainforest understory of epiphytes, liverworts, ferns and mosses. Some rainforest relict species do occur, however, such as Anthocercis sylvicola, Albany pitcher plant (Cephalotus follicularis) and wild plum (Podocarpus drouynianus). The poorer, lateritic soils, about a quarter of the region, are vegetated by medium forest of jarrah (Eucalyptus marginata), which can grow up to 40m tall, and marri (Corymbia calophylla) (up to 60m). Other significant vegetation forms include low woodland of E. marginata and Banksia species (8%); Agonis flexuosa woodlands or scrub on Holocene marine dunes (5%); and swamps supporting sedges (5%) or low woodlands of Melaleuca (4%). As of 2007, the Warren is known to contain 1865 indigenous vascular plant species, and a further 419 naturalised alien species. The endangered flora of the Warren region consists of 28 species, with a further 160 species having been declared Priority Flora under the Department of Environment and Conservation's Declared Rare and Priority Flora List. The region is considered one of the most important centres of plant endemism in the South West. As well as the three tingle trees other species endemic to the region include Corymbia ficifolia (red flowering gum). The area around Albany is especially rich in endemics such as Cephalotus follicularis. Fauna The Warren region supports a rich diversity of fauna, much of which is apparently Gondwanan in origin. Mammal species include the western ringtail possum (Pseudocheirus occidentalis), chuditch (Dasyurus geoffroii) (particularly found in Jarrah forest), the squirrel-like brush-tailed phascogale (Phascogale tapoatafa), quokka (Setonix brachyurus), yellow-footed antechinus (Antechinus flavipes leucogaster), southern brown bandicoot (Isoodon obesulus), and woylie (Bettongia penicillata ogilbyi). The first four of these are endangered species and numbers of many of the indigenous marsupials have declined as their habitats are removed and altered. As with the