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Urticaceae
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Figs; Nettles; Nettle

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Cecropia obtusifolia, leaf bottom stem
© Tomas Pickering and Graham Wyatt, 2006 · 9
Cecropia obtusifolia, leaf bottom stem
Pourouma bicolor, leaf bottom
© Tomas Pickering and Graham Wyatt, 2006 · 9
Pourouma bicolor, leaf bottom

Boehmeria cylindrica, False Nettle
© Copyright Sheryl Pollock 2011 · 8
Boehmeria cylindrica, False Nettle
Cecropia insignis, leaf bottom stem
© Tomas Pickering and Graham Wyatt, 2006 · 8
Cecropia insignis, leaf bottom stem

Cecropia obtusifolia, leaf bottom
© Tomas Pickering and Graham Wyatt, 2006 · 8
Cecropia obtusifolia, leaf bottom
Cecropia peltata, leaf bottom stem
© Tomas Pickering and Graham Wyatt, 2006 · 8
Cecropia peltata, leaf bottom stem

Pourouma bicolor, leaf bottom stem
© Tomas Pickering and Graham Wyatt, 2006 · 8
Pourouma bicolor, leaf bottom stem
Boehmeria cylindrica
© Copyright Bobby Hattaway 2011 · 5
Boehmeria cylindrica

Boehmeria cylindrica
© Copyright Bobby Hattaway 2011 · 5
Boehmeria cylindrica
Boehmeria cylindrica
© Copyright Bobby Hattaway 2011 · 5
Boehmeria cylindrica

Boehmeria cylindrica
© Copyright Bobby Hattaway 2011 · 5
Boehmeria cylindrica
Boehmeria cylindrica
© Copyright Bobby Hattaway 2011 · 5
Boehmeria cylindrica

Parietaria pensylvanica
© Copyright Bobby Hattaway 2011 · 5
Parietaria pensylvanica
Parietaria pensylvanica
© Copyright Bobby Hattaway 2011 · 5
Parietaria pensylvanica

07.Boehmeria cylindrica, _plant_+_leaf_+_flower_+_fruit, _IG8.320.jpg
© Photographer/source
07
Boehmeria cylindrica, plant + leaf + flower + fruit, 320
_IG8
08.Pilea pumila, _plant_+_leaf_+_flower_+_fruit, _QD10.320.jpg
© Photographer/source
08
Pilea pumila, plant + leaf + flower + fruit, 320
_QD10

09.Urtica dioica, _leaf_+_flower_+_fruit, _SP14.320.jpg
© Photographer/source
09
Urtica dioica, leaf + flower + fruit, 320
_SP14
10.Parietaria pensylvanica, _plant_+_leaf_+_flower_+_fruit, _TR21.320.jpg
© Photographer/source
10
Parietaria pensylvanica, plant + leaf + flower + fruit, 320
_TR21

11.Laportea canadensis, _plant_+_leaf_+_flower_+_fruit, _UF34.320.jpg
© Photographer/source
11
Laportea canadensis, plant + leaf + flower + fruit, 320
_UF34

Associates · map
FamilyScientific name @ source (records)
Hyaloscyphaceae  Unguicularia spirotricha @ BPI (1)
Phaeosphaeriaceae  Leptosphaeria @ 872416B (1)
_  Coniothecium @ 872416A (1)

Irenina triloba @ BPI (1)

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Following modified from University of Hawaii
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Urticaceae

The Urticaceae are monoecious or dioecious herbs or infrequently shrubs or small trees comprising 45 genera and 700 species, often with specialized stinging hairs. The leaves are alternate or opposite, simple, and almost always stipulate. The minute, unisexual flowers are in cymose clusters. The perianth is of mostly 4 or 5 undifferentiated tepals or is sometimes absent. The male flowers have a stamen opposite each perianth segment. The female flowers have a single simple pistil with a superior or inferior ovary that contains one basal ovule in its solitary locule. The stigma is brushlike and elongated or is capitate. The fruit is an achene or drupe; in a few species these coalesce to form a multiple.

Each "thumbnail" image below is linked to a larger photograph.


Boehmeria grandis , false nettle, 'akolea, endemic.  Exserted stamens are visible in some of the male flowers in the enlarged image at the right.
Boehmeria sp. Note cystolith in lithocyst of leaf.  These "cyst stones" are of common occurrence in the family.
Neraudia melastomifolia, ma'aloa. Each female flower has a single, conspicuous, brush-like stigma.
Neraudia ? melastomifolia , ma'aloa, male plant, Mt. Ka'ala, O'ahu.
Pilea microphylla , artillery plant. Numerous clusters of tiny greenish female flowers are visible. Though not very apparen t, each has a tiny stellate-capitate stigma. Two larger, pinkish, unopened male flowers are visible. These have four perianth segments (each with an opposing stamen).
Pipturus albidus, mamaki. Mamaki is one of the native Hawaiian species important as a source of fibers. The male plant in the left photo has clusters of tiny staminate flowers. The staminate flowers (middle photo) have a 4-parted perianth with a stamen opposite each segment. A cluster of female flowers is shown in the photo on the right. Note the single, brushlike, elongated stigma on each pistil.
Touchardia latifolia , Urticaceae, olona, endemic to Hawaii.  Note the 5-merous male flowers.
Urera glabra , Urticaceae, opuhe, hopue, hona, Hawai'i Volcanoes National Park, Hawai'i, endemic.
Urtica dioica , stinging nettle, vic. Alsea Falls, OR, 2002.
U rtica sp., nettles, Aussois, France. Note the tiny greenish flowers and stinging hairs.

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Updated: 2019-11-15 13:15:35 gmt
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