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{{SPlantbox
| name = ''LATINNAME'' <!--- replace LATINNAME with the actual latin name -->
|familia=Asteraceae
| common_names = <!--- if multiple, list all, if none, leave blank -->
|genus=Silphium
| growth_habit = ? <!--- tree, shrub, herbaceous, vine, etc -->
|species=perfoliatum
| high = ? <!--- 1m (3 ft) -->
|taxo_author=L.
| wide = <!--- 65cm (25 inches) -->
|common_name=Cup plant
| origin = ? <!--- Mexico, S America, S Europe, garden, etc -->
|name_ref=Flora - A Gardener's Encyclopedia
| poisonous = <!--- indicate parts of plants which are known/thought to be poisonous -->
|habit=herbaceous
| lifespan = <!--- perennial, annual, etc -->
|habit_ref=Flora - A Gardener's Encyclopedia
| exposure = ? <!--- full sun, part-sun, semi-shade, shade, indoors, bright filtered (you may list more than 1) -->
|Max ht box=5
| water = ? <!--- frequent, regular, moderate, drought tolerant, let dry then soak -->
|Max ht metric=ft
| features = <!--- flowers, fragrance, fruit, naturalizes, invasive -->
|height_ref=Flora - A Gardener's Encyclopedia
| hardiness = <!--- frost sensitive, hardy, 5°C (40°F), etc -->
|Max wd box=3
| bloom = <!--- seasons which the plant blooms, if it is grown for its flowers -->
|Max wd metric=ft
| usda_zones = ? <!--- eg. 8-11 -->
|width_ref=Flora - A Gardener's Encyclopedia
| sunset_zones = <!--- eg. 8, 9, 12-24, not available -->
|lifespan=perennial
|life_ref=Flora - A Gardener's Encyclopedia
| image = Upload.png <!--- Freesia.jpg -->
|exposure=sun, part-sun
| image_width = 240px <!--- leave as 240px if horizontal orientation photo, or change to 180px if vertical -->
|sun_ref=Flora - A Gardener's Encyclopedia
| image_caption = <!--- eg. Cultivated freesias -->
|features=flowers
| regnum = Plantae <!--- Kingdom -->
|flowers=orange, yellow
| divisio = <!--- Phylum -->
|Temp Metric=°F
| classis = <!--- Class -->
|min_zone=5
| ordo = <!--- Order -->
|usda_ref=Flora - A Gardener's Encyclopedia
| familia = <!--- Family -->
|max_zone=10
| genus =
|image=Cupplants.jpg
| species =
|image_width=240
| subspecies =
}}
}}
'''''Silphium perfoliatum''''' is a herbaceous perennial flowering plant in [[Asteraceae]], the aster family, it is native from Eastern and Central North America. It grows in prairies, open woodlands, and on stream banks.
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Silphium perfoliatum, Linn. (S. erythrocaulon, Bernh.). Cup Plant. Indian Cup. St. square, usually dentate, branched above, about 6 ft. high: lvs. thin, ovate or deltoid-ovate, the lower contracted into margined petioles, the upper opposite, connate-perfoliate: fl.- heads 2-3 in. across, with 20-30 rays. July. Aug. Ont. to S. D. and Ga.
Silphium perfoliatum, Linn. (S. erythrocaulon, Bernh.). Cup Plant. Indian Cup. St. square, usually dentate, branched above, about 6 ft. high: lvs. thin, ovate or deltoid-ovate, the lower contracted into margined petioles, the upper opposite, connate-perfoliate: fl.- heads 2-3 in. across, with 20-30 rays. July. Aug. Ont. to S. D. and Ga. B.B. (ed. 2) 3:460. G.W. 11, p. 473.
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==Cultivation==
==Cultivation==
===Propagation===
===Propagation===
===Pests and diseases===
===Pests and diseases===
==Species==
<!-- This section should be renamed Cultivars if it appears on a page for a species (rather than genus), or perhaps Varieties if there is a mix of cultivars, species, hybrids, etc -->
==Varieties==
There are two varieties: ''Silphium perfoliatum'' var. ''connatum'' and ''Silphium perfoliatum'' var. ''perfoliatum'' .<ref>[http://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=530387 ITIS Standard Report Page: Silphium perfoliatum var. connatum<!-- Bot generated title -->]</ref>
==Gallery==
==Gallery==
<gallery>
<gallery perrow=5>
File:Silphium perfoliatum.JPG| photo 1
File:Cup plant.jpg| photo 2
Image:Upload.png| photo 3
Image:Upload.png| photo 3
</gallery>
</gallery>
==References==
==References==
<references/>
<!--- xxxxx *Flora: The Gardener's Bible, by Sean Hogan. Global Book Publishing, 2003. ISBN 0881925381 -->
<!--- xxxxx *Flora: The Gardener's Bible, by Sean Hogan. Global Book Publishing, 2003. ISBN 0881925381 -->
<!--- xxxxx *American Horticultural Society: A-Z Encyclopedia of Garden Plants, by Christopher Brickell, Judith D. Zuk. 1996. ISBN 0789419432 -->
<!--- xxxxx *American Horticultural Society: A-Z Encyclopedia of Garden Plants, by Christopher Brickell, Judith D. Zuk. 1996. ISBN 0789419432 -->
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