Silphium glutinosum

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Distribution Map: Based on vouchered plant specimens only. View county names by placing the mouse cursor over a particular county.

Species Distribution Map
Family:ASTERACEAE
Species:Silphium glutinosum J.R. Allison
Common Name:Sticky Rosinweed
Habitat:Glades and rock outcrops of Ketona Dolomite.
Associated Ecological Communities:**
Growth Habit:Herb
Duration:Perennial
Category:Vascular
USDA Symbol:**
Plant Notes:Sticky Rosinweed is a native herbaceous perennial in the Aster family (Asteraceae). It is an Alabama endemic, known only from Bibb County in west central Alabama. All known populations occur on Ketona Dolomite outcrops, the adjacent margins of woods, and rocky margins of streams near the Cahaba River. Sticky Rosinweed is a perennial from a short rhizome. Basal leaves are usually absent at flowering. The stems are from one to six feet in height, and are unbranched below the inflorescence. The stems are round and green in color. Stem leaves are lanceolate or ovate, opposite, and sessile or with short winged petioles. The leaf margins may be entire or toothed. The stems, leaves, and phyllaries are pubescent and glandular. The glands are stalked and amber colored. The entire plant has a resinous feel. Flowers are produced in heads. The heads are arranged in open panicles. Each plant may have from one to thirty heads. Ray and disc flowers are bright yellow. Rays average 8-16 per head. The fruit is an achene. Sticky Rosinweed is listed as a S2 species (typically 6 to 20 occurrences, few remaining individuals, acres, or miles of stream, or factors demonstrably making it very vulnerable in the state), and globally as a G2 species (imperiled globally because of rarity (6 - 20 occurrences, or few remaining acres, or miles of stream) or very vulnerable to extinction throughout its range because of other factors).--A. Diamond
Taxonomic Notes:**
Status:Native, Endemic, S2 (State Rank), G2 (Global Rank)
References:**
Specimen: View specimen details in the Alabama Herbarium Consortium Specimen Database

** Not applicable or data not available.

Classification

FamilyASTERACEAE - Aster family
Genus Silphium
Species Silphium glutinosum J.R. Allison - Sticky Rosinweed

Citation

Citation Silphium glutinosum J.R. Allison, Castanea 66(1–2): 183–188, f. 11, 12A–C. 2001.
Basionym: **
Type: USA: ALABAMA: Bibb Co.: ca. 17.8 km NE of Centreville, ca. 2 km NNW of the mouth of Alligator Creek. "Alligator Glade," Ketona Dolomite outcrop ca. 0.2 km W of Alligator Creek, 19 Aug 2000, James R. Allison 12503 (holotype, GH; isotypes: AUA, DUKE, FLAS, FSU, GA, IBE, JSU, MICH, MO, NCU, NY, TAMU, UARK, UNA, US, USCH, VDB).

** Not applicable or data not available.

Synonyms

No synonyms exist for this species.

Specimens and Distribution

This species has been reported in the following counties by the herbaria listed. An overview of the individual specimens are provided in the table that follows. Click on the accession number to view details; click on column headers to sort; choose a county or herbaria to filter the specimen data.

Counties included on distribution map: Bibb

Counties represented by specimen data listed below:

Herbaria represented by specimen data listed below: ALNHS, AMAL, AUA, JSU, NY, SAMF, UNA, UWAL

Range of years during which specimens were collected: 1996 - 1996

Barcode / Accession No.
County
Coll. Date
Collector &
Collection No.
Herbarium &
Herbarium Name Used
Image
UNA00060026 Bibb 11 Oct 1992 Allison, James R.
7308		 UNA
Silphium glutinosum J. Allison
UNA00060025 Bibb 11 Oct 1992 Allison, James R.
7308		 UNA
Silphium glutinosum J. Allison
UNA00060024 Bibb 11 Oct 1992 Allison, James R.
7308		 UNA
Silphium glutinosum J. Allison
AMAL00003383 Bibb 05 Oct 1993 Allison, James R.
8022		 AMAL
Silphium glutinosum J. Allison X trifoliatum var. latifolium A. Gray
AMAL00003384 Bibb 05 Oct 1993 Allison, James R.
8022		 AMAL
Silphium glutinosum J. Allison X trifoliatum var. latifolium A. Gray
UNA00059180 Bibb 30 Oct 1993 Allison, James R.
8107		 UNA
Silphium glutinosum J. Allison
UNA00049395 Bibb 04 Aug 1996 MacDonald, John R.
9822		 UNA
Silphium glutinosum J. Allison
JSU121272 Bibb 4 Aug 1996 MacDonald, John R.
9822		 JSU
Silphium glutinosum J.R. Allison
AUA000007380 Bibb 15 Aug 1998 ALLISON, JAMES R.
11326		 AUA
SILPHIUM GLUTINOSUM J. ALLISON
AUA000007379 Bibb 15 Aug 1998 ALLISON, JAMES R.
11326		 AUA
SILPHIUM GLUTINOSUM J. ALLISON
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