Edit Plant: Silphium laciniatum

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'''''Silphium laciniatum''''' ('''Compass Flower''', '''Compass Plant''' or '''Rosinweed''') is a species of [[flowering plant]] in the genus ''[[rosinweed|Silphium]]''. It is native to east-central [[North America]]. It is a [[perennial plant|perennial]] [[herbaceous]] plant similar in appearance to a [[sunflower]], growing to 1-4 m tall, with bristly-hairy stems. The [[leaf|leaves]] are alternately arranged, and deeply pinnately lobed; the basal leaves up to 40 cm long, becoming smaller higher up the stem. The [[flower]]s are produced in [[inflorescence|flowerheads]] (capitula) 5-12 cm diameter, with a ring of ray florets surrounding the 2-3 cm diameter center of disc [[Flower|floret]]s. Flowering is in late summer, typically from July to September. Compass plants are so named because they tend to align their foliage '''East-West''' to present the minimum surface area to the hot noon sunshine. The taproot of the compass plant may grow to more than 9-14 ft. deep, making it hardy and resistant to drought. {{Inc| Silphium laciniatum, Linn. Compass Plant. St. about 6 ft. high, leafy at the base, much less so above, very rough: lvs. 1 ft. long or more, once or twice pinnately parted, the lobes oblong or lanceolate: fl.-heads several, sessile or short-peduncled, 2-5 in. across; rays 20-30. July-Sept. Ohio, west and south.— It is said of this species that the st.-lvs. tend to point north and south. {{SCH}} }} ==Cultivation== ===Propagation=== ===Pests and diseases=== ==Varieties== ==Gallery== <gallery perrow=5> Image:Upload.png| photo 1 Image:Upload.png| photo 2 Image:Upload.png| photo 3 </gallery> ==References== <references/>    ==External links== *{{wplink}} {{stub}} __NOTOC__

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