|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: Geraniaceae||View Description||Dichotomous Key|
|Genus: Geranium||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Geranium robertianum L.
Habit: Annual, biennial. Stem: decumbent to ascending, 1--5 dm, 1--3 mm wide in lower 1/2, hairs +- sparse. Leaf: blade 3.5--10 cm wide; divided > 0.9 to base or midrib, segments 5, +- sessile to short-stalked, pinnately lobed to dissected. Flower: pedicel 5--20 mm; sepals 6--8 mm, smooth, soft-hairy, awned; petals 10--14 mm, rounded, pink to red-purple; anthers +- purple. Fruit: mericarp 2.5--3.1 mm, net-like, with 1--3 collar-like rings and long fibers at tip, glabrous or hairy, basal callus 0; beak 17--19 mm, narrow tip 4--5 mm; stigmas +- 1 mm. Seed: smooth. Chromosomes: 2n=64.
Ecology: Open to shaded sites; Elevation: < 500 m. Bioregional Distribution: NCo, CCo, SnFrB; Distribution Outside California: widespread North America; native to Europe, northern Africa, western Asia; alien in South America, China, Madagascar. Flowering Time: Apr--Sep
eFlora Treatment Author: Carlos Aedo
Jepson Online Interchange
Previous taxon: Geranium richardsonii
Next taxon: Geranium rotundifolium
Citation for this treatment: Carlos Aedo 2016. Geranium robertianum, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=26742, accessed on July 25, 2016.
Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on July 25, 2016.