Interior rose, also known as Woods' rose in honor of the English architect and systemic botanist Joseph Woods, is a resident of generally moist areas up to 11,000' in the San Gabriels, San Bernardinos and desert mountains and north to the Sierras, Cascades and Canada. The persistent sepals in fruit differentiate it from R. gymnocarpa. It is a loose to thick shrub growing to 9' or so, with gray-brown or red-brown stems, few to many ± slender and straight prickles and leaves with 5-7 subglabrous, oval, coarsely serrate leaflets. One to five flowers are borne on a glandless inflorescence, each of which typically has more than ten pistils. It blooms from May to August.

Click here for Latin name derivations: 1) Rosa 2) woodsii 3) ultramontana
Pronunciation: RO-za WOODS-ee-eye ul-tra-mon-TAY-na.
Click here for Botanical Term Meanings.