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Living Collection Count (14-03-2007)
|1. Number of genera||1|
|2. Number of species total (incl. infraspecifics ranks)||33||24|
|3. Number of undetermined accessions, excl. cultivars||40||27|
|4. Number of accessions, excl. cultivars||47||31|
|5. Number of cultivars (and number of accessions with special value)||1(0)|
|6. Number of accessions of determined cultivars||0|
|7. Number of accessions of undetermined cultivars||1|
|8. Number of unnamed species (spec's) on genus level||1||0|
|9. Number of unnamed species (spec's) higher than genus level||0||0|
|10. Number of families||1|
Special ValueThis is a unique collection in the Netherlands, where many of the especially cushion forming species are brought together in the Rock Garden. The collection has a high degree of wild collected specimen, mostly grown from seed.
DescriptionWithin the Rock Garden (Alpine) collection, we do have some special genera that has our focus, like Eriogonum (Wild Buckwheat - Polygonaceae). Many Eriogonum species are very nice cushion forming plants that are suitable for the Rock Garden. The genus is restricted to Northern America (USA) and mainly a Rocky Mountain element. Many species are growing in California. Some species are highly variable and it is interesting to see that variation within the collection.