Plant Index


 
 
 
 

Silphium compositum

Silphium compositum Michx.

kidneyleaf rosinweed

Silphium compositum (Kidneyleaf Rosinweed)
Image ID: 9574
Image by: Ware, Richard & Teresa
Image Collection: NCBG Digital Library

PLANT INDEX

ID_PLANT: SICO5
SCIENTIFIC NAME: Silphium compositum
Include in WOTAS: 1
Publish to Web: 1
Last Modified: 2019-01-25

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: Large, erect perennial of dry woodlands, clearings, meadows, sandhills and road banks.
STEMS: Stems flexible and wand-like, leafy toward base, with only a few leaf-like bracts above, smooth, often with a white-waxy coating.
LEAVES: Leaves alternate but clustered near base of stem, long-petiolate, oval to kidney-shaped but toothed to deeply pinnately lobed, to 14 in. long (reduced upward), often with a red mid-vein, thick, smooth or hairy.
INFLORESCENCE:
FLOWERS: Composite flowers (heads) in a loosely forking, terminal cluster; heads to 2 in. wide, consisting of 6-12 bright yellow ray florets encircling a center 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: 1.5-8 ft.

DURATION: Perennial
HABIT: Herb

LEAF ARRANGEMENT: Alternate
LEAF COMPLEXITY:
LEAF RETENTION:

FLORAL CHARACTERISTICS
SYMMETRY: Mixed
BLOOM TIME: May-September
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
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: southeastern United States

HORTICULTURAL
Plant Sale Text: Rosinweed is a long-lived southeastern native perennial. It is found growing at the edges of woodlands and in old fields, primarily in the piedmont and coastal plain. Rosinweeds are adept at surviving drought and even fire once they are well established, due to their thick tap-roots. This is a wonderful perennial for attracting butterflies, because its nectar-producing flowers open over many weeks. The seeds that follow are a favorite food of goldfinches.

Bloom Table Text:

NCBG Location:

Cultural Notes:

SOIL MOISTURE: Average
LIGHT EXPOSURE: Sun
MINIMUM HARDINESS ZONE: 5
MAXIMUM HARDINESS ZONE: 9
GERMINATION CODE: 2
WILDLIFE VALUE: Bee Friendly, Butterfly Friendly, Bird Friendly
DEER RESISTANCE:

GRIM ACCESSIONS

acc_id acc_num acc_dt coll_id Action
26 2018-0118 2018-12-13 26 View
9257 2019-0016 2019-11-11 1968 View


GRIM COLLECTIONS

Coll_id Project Collection date Collector Action
26 HORT 2014-11-01 Schubert View
1968 HORT 2018-10-01 Gocke View
2160 NPMD 2019-08-12 Touloupas View


GRIM PLANTINGS

plt_num acc_id loc_num pers_num inst_dt Action
35 26 18 Liloia 2018-08-23 View
12382 9257 21 Liloia 2019-10-17 View

USDA PLANTS DATABASE

USDA Symbol: SICO5
USDA Common Name: Kidneyleaf Rosinweed
Native Status: L48 (N)
Distribution: USA (AL, FL, GA, NC, SC, TN, VA, WV)
Duration: Perennial
Growth Habit: Forb/herb

WEAKLEY FLORA

SCIENTIFIC NAME:
COMMON NAME:
SYNONYMY:
PHENOLOGY:
HABITAT:
COMMENTS:
RANGE MAP:

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

WEB RESOURCES

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

NCBG IMAGE RECORDS

ID IMAGE1: 9574
ID IMAGE2: 25174
ID IMAGE3: 9573

From the Image Gallery


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Image ID: 11992
22 photo(s) available in the Image Gallery

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