Commercially available

9 favorite votes.  

Bred by Isabella Preston (Canada, 1923).
Introduced in Canada by Agriculture Canada, Ottawa, Ontario (Central Experimental Farm) in 1945 as 'Patricia Macoun'.

Hybrid Helena.  

White, yellow stamens.  Moderate fragrance.  Small to medium, semi-double to double, cluster-flowered, in large clusters bloom form.  

Armed with thorns / prickles, climbing.  Large, glossy, medium green foliage.  7 to 9 leaflets.  

Height: up to 6'7" (up to 200cm).  

USDA zone 4b through 9b.  Hardy.  vigorous.  can be trained as a climber.  

An open-pollinated seedling of R. Helenae has been named Patricia. The flowers are double, but open so that the yellow stamens show. They are fragrant and produced in large clusters. The plants seem to winter better than most climbing roses when given the same protection. In districts where climbing roses do not have to be covered for winter it should make a good variety for covering pergolas and arches.

Diploid

Isabella Preston's 'Patricia Macoun' is now available in Canada (returned from Europe).

One source suggests that R. multiflora is the accidental pollen parent (see References).