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Published In: Rhodora 43(516): 647. 1941. (Rhodora) Name publication detailView in BotanicusView in Biodiversity Heritage Library
 

Project Name Data (Last Modified On 8/11/2017)
Acceptance : Accepted
Project Data     (Last Modified On 7/9/2009)
Status: Native

 

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9. Viburnum recognitum Fernald (northern arrowwood)

V. dentatum var. lucidum Aiton

Map 1445, Pl. 337 h, i

Plants shrubs 1–3 m tall. Bark firm, not peeling, relatively smooth to finely roughened or warty on younger branches, occasionally becoming somewhat fissured on older stems, gray or grayish brown to reddish brown. Winter buds ovoid-conical, slightly flattened, with 2 pairs of overlapping scales, glabrous, not or only slightly sticky. Stipules usually absent. Petioles 18–36 mm long, unwinged, glabrous or with scattered hairs along the ventral groove, lacking prominent glandular swellings near the tip. Leaf blades (5–)7–15 cm long, 4.5–10.0 cm wide, unlobed, relatively thin and papery, broadly elliptic to broadly ovate or nearly circular, rounded to truncate or shallowly cordate at the base, angled to a bluntly or sharply pointed tip or short-tapered to a sharply pointed tip, the margins coarsely toothed with the teeth 1–3 per cm, 12–25 on each side, the upper surface glabrous or rarely with scattered, mostly unbranched hairs, the undersurface sparsely or rarely moderately pubescent along the main veins with mostly unbranched hairs and usually also with small patches of densely woolly hairs in the axils of the main veins, often with 3 or 4 secondary veins on each side crowded near the base of the midvein, pinnately veined above the base, the secondary veins straight, often dichotomously branched but not forming a network, extending to the leaf margin, each branch ending in a tooth. Inflorescences short- to more commonly long-stalked, with (3–)5–7 primary branches, these glabrous or rarely with a few unbranched hairs, occasionally also with sparse, minute, stalked glands, the marginal flowers fertile and similar to the other flowers. Ovaries glabrous, the tapered, stylelike tip densely short-hairy. Fruits 7–10 mm long, ellipsoid, oblong-ovoid, or nearly spherical, purplish blue to bluish black, not glaucous. Nutlet 6–8 mm long, yellowish brown. 2n=36. May–June.

Uncommon in the eastern half of the Ozark Division, locally north to Lincoln County and perhaps west to Boone County (eastern U.S. west to Wisconsin, Missouri, and Arkansas; Canada). Banks of streams and rivers, bottomland forests, and mesic upland forests; also old fields and roadsides; often on acidic substrates.

Steyermark (1963) knew this species only from two sites in Oregon County, but in recent years several additional populations elsewhere in the Ozarks have been discovered. The plants at Cuivre River State Park (Lincoln County) and Forest Park (St. Louis City) are from disturbed successional habitats and may represent escapes from cultivation. For further discussion of anomalous plants from Boone County, see the treatment of the closely related V. dentatum.

 


 

 
 
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