|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: Urticaceae||View Description||Dichotomous Key|
|Genus: Parietaria||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Parietaria pensylvanica Willd.
Habit: Annual < 6 dm, decumbent to erect. Leaf: blade 10--90 mm, on older stems lanceolate to linear, base long-tapered, tip generally acuminate to long-tapered, lowest veins from midrib well above blade base. Flower: calyx lobes +- erect, 1.5--2 mm, acute, dark red-brown. Fruit: hidden between calyx lobes or not, 0.9--1.5 mm, 0.5--1 mm wide, ovate, +- (red-) brown, tip obtuse. Chromosomes: 2n=16.
Ecology: Desert scrub, coastal scrub, chaparral, oak forest, riparian woodland; Elevation: 200--730 m. Bioregional Distribution: KR, NCoRI, s SN, SnJt; Distribution Outside California: to southern Canada, eastern United States, Mexico. Flowering Time: Apr--Jun Note: Possibly alien; California collections historic, widely scattered.
eFlora Treatment Author: Robert E. Preston & Dennis W. Woodland
Jepson Online Interchange
Previous taxon: Parietaria judaica
Next taxon: Soleirolia
Citation for this treatment: Robert E. Preston & Dennis W. Woodland 2017. Parietaria pensylvanica, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=36257, accessed on March 22, 2017.
Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora, http://ucjeps.berkeley.edu/eflora/, accessed on March 22, 2017.