largely hairless. except for a few counties in the south and NW (see Distribution height from 3' to 10' in height. a Silphium terebinthinaceum Jacq. wide. honeybees, bumblebees, and Miner bees. ed. was taken at Dave Monk's postage stamp prairie in the latter city. The flowering stems, although slender and bare, are very robust and can rise to a towering height of 10'. Prairie dock is not fussy as to soils or soil moisture content and flowers best in full sun. whose larvae feed on these gall-formers. Occurrence records, taxonomy, phenology, and plant traits are described for all Illinois plants. Moist, Well-Drained Exposure/Light Requirements. The oligolectic Iowana spp. Veronicastrum virginicum. Wet prairie or sedge meadow species. Leaf venation is pinnate. the leaves are more stiff. The species name “ terebinthinaceum ” means “like turpentine,” referring to the odor of this plant. The exceptional height of the flowering stalk is The collection also contains species that are in cultivation at Denver Botanic Gardens. Photo Location: Chicago Botanic Garden In Glencoe, Il on 2018-08-23. The photographs of the flowerhead close-up and basal leaf close-up were ed. It is usually light green, but sometimes turns red in the presence of bright sunlight. Yellow, daisy-like flowers on very long flower stalks. in shape (spade-shaped) and their margins are coarsely toothed. These stalks are green or reddish Prairie Dock (note very long flower stalks) Features. The lower surface is light green and short-pubescent. Each flowerhead One vendor has this plant for sale. The basal leaves have a thick sandpapery Prairie dock ( Silphium terebinthinaceum) is a distinctive native of the tallgrass prairie featuring leafless stems up to 10 feet tall topped by panicles of bright yellow, 3-inch-wide flowers. Etymology: C Value: 4: Wetness: FAC-# of Species in Genus in Illinois: 7: Duration: Perennial: Reproduction: Monoecious: Flower Type: Perfect: Flower Shape: Flower # of Parts: Growth Habit: Forb: Leaf Arrangement: Alternate, Basal: Leaf Type: Simple: Leaf Shape: Leaf Shape Term: It tends to bloom later than other Silphium (see Other Considerations below). Prairie dock is not fussy as to soils or soil moisture content and flowers best … Where to see the Silphiums Once the prairie dock, compass plant, cup plant, and rosinweed were numerous across the prairies in Illinois, but as the prairies were removed these … texture, Exposure. Bees and hummingbirds are frequent pollinators, and goldfinches adore the seeds. State: Illinois County: Hardin Forest: Shawnee District: Elizabethtown Established: 1990 Acres: 17 Description: Whoopie Cat Mountain RNA contains relatively undisturbed examples of glade and dry upland forest natural community types. Photographic The basal leaves have a thick sandpapery texture, particularly on the underside, and they are up to 18" long and 12" wide. particularly on the underside, and they are up to 18" long and 12" These branching stalks have only a few leafy bracts. narrow and wiry, and light green or yellowish brown. All rights reserved. Sporobolus heterolepis. Illinois Native Plant Guide Prairie Dock Silphium terebinthinaceum Preferred Water Depth and Inundation Tolerance. The composite flowers attract long-tongued bees primarily, including Asclepias sullivantii. 1000 Lake Cook RoadGlencoe, IL 60022DirectionsGarden MapSmartphone AppAdmission is free.Parking rates apply. & Habitat: Patches of brown may develop when the leaves are damaged by drought, View this plant in a garden. Prairie Dock is rather slow Data Source. these species attract the hyperparasitic wasp Eurytoma lutea, The blooming period usually occurs from late along a railroad in Champaign, while the photograph of the basal leaves and railroads. Foliage is spade-shaped with a rough, "cat's tongue" texture typical of Silphiums. Tends to resemble blue fescue only larger. Silphium terebinthinaceum Jacq. This 10 members have or want this plant for trade. Silphium terebinthinaceum is a species with stunning proportions. coarsely serrated or dentate. Comments: flowering stem of Prairie Dock, forming invisible galls. eat the foliage and stems of Prairie Dock. On Start Over. Plant life of Alabama. Photo #13/28 of Prairie Dock (Silphium terebinthinaceum). older leaves become dull and rough. The serrated basal leaves are up to 18" long and 12" across, forming vase-like rosettes up to 4' across. Silphium terebinthinaceum on the prairie, Chicago, Illinois. addition, this plant produces one or more panicles of flowerheads on Southern Illinois University Press, Carbondale and Edwardsville. in Urbana, the photograph of the panicles of flowerheads was taken All rights reserved. Halictine bees, bee flies, and the Ruby-Throated Hummingbird. taken at Meadowbrook Park unusual appearance, like something out of the Stone Age when Columbian feed on the Description: This plant has a vase-like rosette of large basal leaves that are spade-shaped (cordate). The Kathryn Kalmbach Herbarium (KHD), a collection of over 67,000 vascular plant specimens, is a regional herbarium with a research focus on the species diversity of Colorado and the Southern Rocky Mountain region. 4 - 9 Bloom Color. ... 4-9 Feet Native To: Illinois Indiana Iowa Michigan Missouri Ohio Wisconsin . 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