|University of California, Berkeley|
|Jepson eFlora: Taxon page
Key to families | Table of families and genera
Index to accepted names and synonyms:
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|Family: Rosaceae||View Description||Dichotomous Key|
|Genus: Rosa||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Rosa pinetorum A. Heller
Habit: Dwarf shrub, openly rhizomed, generally < 10 dm. Stem: prickles generally many, generally not paired, 3--10 mm, both slender and +- thick-based, straight. Leaf: axis glabrous or finely hairy, glandular; leaflets 5--7, glabrous to hairy; terminal leaflet 10--30 mm, generally +- elliptic, widest near middle, tip +- obtuse, margins +- single- or double-toothed, +- glandular. Inflorescence: generally 1--5-flowered; pedicels generally 10--30 mm, glabrous, glandular or not. Flower: hypanthium generally +- 4 mm wide at flower, glabrous, glandless, neck +- 3 mm wide; sepals generally +- glandular, entire, tip generally +- = body, entire or toothed; petals +- 15--20 mm, pink; pistils +- 10--20. Fruit: +- 12 mm wide, spheric; sepals +- erect, persistent; achenes 3--4 mm. Chromosomes: 2n=14,21.
Ecology: Pine woodland; Elevation: generally < 300 m. Bioregional Distribution: w-c CW. Flowering Time: May--Jun Note: Hybrids of Rosa gymnocarpa × Rosa spithamea also key here.
eFlora Treatment Author: Barbara Ertter
Jepson Online Interchange
Listed on CNPS Rare Plant Inventory
Previous taxon: Rosa nutkana subsp. nutkana
Next taxon: Rosa pisocarpa
Citation for this treatment: Barbara Ertter 2017. Rosa pinetorum, Revision 2, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=41684, accessed on February 25, 2017.
Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on February 25, 2017.