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Published In: Systema Naturae, Editio Decima 2: 1082. 1759. (Syst. Nat. (ed. 10)) Name publication detailView in BotanicusView in Biodiversity Heritage Library
 

Project Name Data (Last Modified On 8/25/2017)
Acceptance : Accepted
Project Data     (Last Modified On 7/9/2009)
Status: Native

 

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2. Magnolia tripetala L. (umbrella tree, umbrella magnolia)

Map 2041

Plants trees to 12 m tall. Bark light gray, thin, smooth, becoming finely warty with age. Twigs grayish brown, glabrous, the terminal buds somewhat flattened, bluntly pointed at the somewhat asymmetric tip, glabrous. Leaves mostly in whorl-like clusters at the branch tips. Leaf blades 10–20 cm long at flowering, to 60 cm long at maturity, oblong-elliptic to oblanceolate or narrowly obovate, widest at or more commonly above the middle, long-tapered to the base, the upper surface glabrous, the undersurface green, densely hairy, especially along the midvein. Flowers with the perianth 7–12 cm long, consistingof 6–9 tepals, the outermost usually the longest, all spreading to loosely ascending, oblanceolate to narrowly obovate, the outermost usually slightly cupped toward the tip, white. Fruits 6–12 cm long, narrowly oblong-ovate in outline, the follicles long-beaked, glabrous. Seeds 9–12 mm long, ovate, often somehat flattened, the aril pinkish red to red. 2n=38. April–May.

Possibly introduced, known from a single site in St. Louis County (eastern U.S. west to Oklahoma and Louisiana). Mesic upland forests.

Steyermark (1963) excluded this species from the Missouri flora, stating that the only historical collection was mislabeled and originated from Tennessee. However, Harriman (1969) reported a single mature individual in a remnant forest stand in St. Louis County, which he suggested was a disjunct native occurrence, based on the associated species at the site and the lack of previous development in the immediate area. Flowers of this species have an unpleasant scent.

 
 


 

 
 
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