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Silphium compositum var. compositum

Silphium compositum Michx. var. compositum

kidneyleaf rosinweed

Synonym(s): Silphium orae
Silphium compositum var. compositum (Kidneyleaf Rosinweed)
Image ID: 7720
Image by: Parkins, Grant Morrow
Image Collection: NCBG Digital Library

PLANT INDEX

ID_PLANT: SICOC
SCIENTIFIC NAME: Silphium compositum var. compositum
Include in WOTAS: 0
Publish to Web: 1
Last Modified: 2017-12-19

GENUS INDEX

GENUS CODE: SILPH
GENUS SCIENTIFIC: Silphium
GENUS AUTHORITY: L.
GENUS COMMON: Rosinweed
GENUS SUMMARY: A genus of 20-30 species, herbs, of e. North America.
GENUS IDENTIFICATION: Identification notes: The number of ray flowers per head is a useful taxonomic character in Silphium; since only ray flowers are fertile, the number of ray flowers can also be estimated by the number of achenes in freshly fruiting material. The key and taxonomic treatment is provisional.
GENUS REFERENCES: Sweeney (1970)=Z; Perry (1937)=Y; Clevinger in FNA (2006c); Clevinger (2004)=X; Cronquist (1980)=SE; Cruden (1962); Medley (1989); Steyermark (1951).

FAMILY INDEX

FAMILY CODE: ASTERA
FAMILY SCIENTIFIC: Asteraceae
FAMILY AUTHORITY: Dumortier 1822 or COMPOSITAE Giseke 1792
FAMILY COMMON: Aster Family
FAMILY SUMMARY: A family of about 1500-1700 genera and 20,000-25,000 species, shrubs, herbs, trees, and vines, cosmopolitan in distribution.
FAMILY REFERENCE: Cronquist (1980)=SE throughout family treatment.

NCBG DESCRIPTIVES

INTRO: Tall, erect perennial of dry woodlands, clearings, meadows, sandhills and road banks.
STEMS: Stems flexible and wand-like, leafy toward base (few leaf-like bracts above), smooth, often with white-waxy coating.
LEAVES: Leaves alternate but clustered near base of stem, long-petiolate, oval to kidney-shaped, to 14 in. long (reduced upward), toothed to deeply pinnately lobed, thick, smooth or hairy, often with a red mid-vein.
INFLORESCENCE:
FLOWERS: Compound flowers (heads) in a loosely forking, terminal cluster; heads to 2 in. wide, consisting of 6-12 bright yellow ray florets encircling a central disk of 20 or more tiny, dull yellow, tubular florets; several series of green, broadly oval bracts surround the cup-like base of each head.
FRUITS:
COMMENTS: Silphium compositum var. ovatifolium and Silphium compositum var. venosum . . . ?
HEIGHT: 1 1/2-8 ft.

DURATION: Perennial
HABIT: Herb

LEAF ARRANGEMENT:
LEAF COMPLEXITY:
LEAF RETENTION:

FLORAL CHARACTERISTICS
SYMMETRY:
BLOOM TIME: May-Sep
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
x x x x x x x

BLOOM COLOR: Yellow
White Red Pink Orange Yellow Green Blue Lavender Purple Violet Brown Not Applicable
x

FRUITING PERIOD:

DISTRIBUTION
HABITAT TYPE: Dry forests, Sandhills, Woods margins
NATIVE RANGE:

HORTICULTURAL
Plant Sale Text:

Bloom Table Text:

NCBG Location:

Cultural Notes:

SOIL MOISTURE: Dry, Average
LIGHT EXPOSURE: Sun, Part Shade
MINIMUM HARDINESS ZONE:
MAXIMUM HARDINESS ZONE:
GERMINATION CODE: 2
WILDLIFE VALUE: Bee Friendly, Butterfly Friendly
DEER RESISTANCE:

GRIM ACCESSIONS

acc_id acc_num acc_dt coll_id Action
318 2011-0185 2011-07-12 323 View
4015 1992-0171 View


GRIM COLLECTIONS

Coll_id Project Collection date Collector Action
323 HORT 2005-11-01 Bryan View
1120 HORT 2005-11-01 Bryan View
1554 HORT 2005-03-08 Bryan View
1816 HORT 2006-10-01 Bryan View
2091 NPMD 2020-10-23 Adams View
2231 NPMD 2019-09-16 Touloupas View
2255 NPMD 2019-09-25 Touloupas View
2265 NPMD 2019-09-26 Touloupas View
2304 NPMD 2019-10-16 Touloupas View


GRIM PLANTINGS

plt_num acc_id loc_num pers_num inst_dt Action
738 318 19 NCBG staff 2011-05-12 View
6343 4015 200 NCBG staff 1993-03-01 View

USDA PLANTS DATABASE

USDA Symbol: SICOC
USDA Common Name: Kidneyleaf Rosinweed
Native Status: L48 (N)
Distribution: USA (GA, NC, SC, TN, VA)
Duration: Perennial
Growth Habit: Forb/herb

WEAKLEY FLORA

SCIENTIFIC NAME: Silphium compositum var. compositum
COMMON NAME:
SYNONYMY: [= K1, Va, Y; = S. compositum - F; < S. compositum var. compositum - RAB; > S. compositum - S; > S. orae Small - S; < S. compositum - C, FNA, G, K2, SE, W; = S. compositum ssp. compositum - Z; > S. collinum Greene]
PHENOLOGY:
HABITAT: Cp (GA, NC, SC, VA), Pd (NC, SC, VA), Mt (NC, SC):
COMMENTS: Sandhills, other xeric forests; common. May-Sep. VA south to GA. Perhaps worth dividing further into two taxa: S. compositum sensu stricto, restricted to the Coastal Plain and extreme lower Piedmont, and distributed from se VA through the Carolina Coastal Plain to extreme e. GA, a distribution very similar to those of Carphephorus bellidifolius, Cirsium repandum, and Vaccinium crassifolium; and S. collinum Greene, with less deeply lobed leaves, and distributed from se. and sc. VA, nc. NC, sw. NC and ne. AL south to sc. SC, c. GA, and ec. AL.
RANGE MAP: Silphium compositum var. compositum.png

Key to Map Symbols
ABOUT FAMILY (Weakley Flora)
Asteraceae Dumortier 1822 or COMPOSITAE Giseke 1792 (Aster Family)
SUMMARY: A family of about 1500-1700 genera and 20,000-25,000 species, shrubs, herbs, trees, and vines, cosmopolitan in distribution.
REFERENCE: Cronquist (1980)=SE throughout family treatment.
ABOUT GENUS (Weakley Flora)
Silphium L. (Rosinweed)
SUMMARY: A genus of 20-30 species, herbs, of e. North America.
REFERENCE: Sweeney (1970)=Z; Perry (1937)=Y; Clevinger in FNA (2006c); Clevinger (2004)=X; Cronquist (1980)=SE; Cruden (1962); Medley (1989); Steyermark (1951).

HERBARIUM RESOURCES

SERNEC: Find Silphium compositum var. compositum in Southeast Regional Network of Experts and Collections (if available)
UNC SERNEC: Find Silphium compositum var. compositum in University of North Carolina Chapel Hill Herbarium - Southeast Regional Network of Experts and Collections (if available)

WEB RESOURCES

USDA: Find Silphium compositum var. compositum in USDA Plants
NPIN: Find Silphium compositum var. compositum in NPIN Database
FNA: Find Silphium compositum var. compositum in the Flora of North America (if available)
Google: Search Google for Silphium compositum var. compositum

NCBG IMAGE RECORDS

ID IMAGE1: 7720
ID IMAGE2: 0
ID IMAGE3: 0

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1 photo(s) available in the Image Gallery

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