Suposo que seria Crataegus flava - Yellow Hawthorn o Summer Haw en anglès. Com sabràs, l'arç blanc és Crataegus monogyna o Common Hawthorn amb flors blanques.

Són flors molt maques.

Sheila


http://www.br.cc.va.us/arboretum/plants.htm

Crataegus flava  (Yellow Hawthorn, Summer Haw)

http://www.funet.fi/pub/sci/bio/life/plants/magnoliophyta/ma...

http://www.ddgi.es/espais/arcblanc.htm



Arç blanc (Crataegus monogyna)

Just a wee note. There are several common names for this species, the most common being Sea Buckthorn. However, Common Sea Buckthorn and Sea-buckthorn are also found. Here is a reference that you might find interesting.

BTW, a Catalan friend of mine (who is a botanist) told me he'd call both Crataegus flava and Hippophae rhamnoides, Arç groc. Seeing they are not native to Catalonia the common (vulgar) names can vary greatly. Hippophae rhamnoides is also know as espí groc in Catalan for example.

Molta sort,
Sheila



Sea-buckthorn (Hippophae rhamnoides L.) is a fascinating plant species. It is native to Europe and Asia and has been known and used by humans for centuries. It is mentioned in the writings of ancient Greek scholars such as Dioscorid and Therophast. In ancient Greece, sea-buckthorn was known as a remedy for horses. Leaves and young branches were added to the fodder. This resulted in rapid weight gain and a shiny coat for the horse. This, in fact, gave the name to the plant in Latin 'Hippo' - horse, 'phaos' - to shine (Rongsen 1992).


http://www.agr.ca/pfra/shbpub/shbpub62.htm


F. Mesclans : Guia per a conèixer els arbusts i les lianes

Just a wee note. There are several common names for this species, the most common being Sea Buckthorn. However, Common Sea Buckthorn and Sea-buckthorn are also found. Here is a reference that you might find interesting.

BTW, a Catalan friend of mine (who is a botanist) told me he'd call both Crataegus flava and Hippophae rhamnoides, Arç groc. Seeing they are not native to Catalonia the common (vulgar) names can vary greatly. Hippophae rhamnoides is also know as espí groc in Catalan for example.

Molta sort,
Sheila



Sea-buckthorn (Hippophae rhamnoides L.) is a fascinating plant species. It is native to Europe and Asia and has been known and used by humans for centuries. It is mentioned in the writings of ancient Greek scholars such as Dioscorid and Therophast. In ancient Greece, sea-buckthorn was known as a remedy for horses. Leaves and young branches were added to the fodder. This resulted in rapid weight gain and a shiny coat for the horse. This, in fact, gave the name to the plant in Latin 'Hippo' - horse, 'phaos' - to shine (Rongsen 1992).


http://www.agr.ca/pfra/shbpub/shbpub62.htm

F. Masclans: Guia per a conèixer els arbusts i les lianes