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Published In: Species Plantarum, Editio Secunda 1: 750. 1762. (Sp. Pl. (ed. 2)) Name publication detailView in BotanicusView in Biodiversity Heritage Library
 

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

 

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1. Aconitum uncinatum L. (wild monkshood)

Map 2335

Plants perennial herbs, with rhizomes having tuberous roots. Stems 30–200 cm long, weak and arching, glabrous. Leaves alternate, glabrous, the basal leaves absent at flowering time. Well-developed lower leaves with the petiole 7–20 mm long, blade 5.3–6.2 cm long, 8.6–9.9 cm wide, 3-parted (sinuses ending 4–9 mm from leaf base), the base cordate, the three main segments rhombic or oblanceolate, narrowed to a sharp point at the tip, each with 4–10 coarse teeth or shallow lobes. Inflorescences terminal, narrow panicles, their main axes glabrous, the flower stalks with long, spreading hairs toward the tip. Flowers zygomorphic, perfect. Sepals 5, deep blue, 15–27 mm long, the upper sepal deeply hooded, lateral and lower sepals plane, not persistent at fruiting. Petals 2, 8–13 mm long, completely hidden by the sepals, spurred. Stamens hidden by the sepals, the anthers almost black. Staminodes absent. Pistils 3, each with 10–20 ovules, style present. Fruits cylindrical follicles, the body 12–14 mm long, the outer wall thick, prominently cross-veined, the beak about 3 mm long. Receptacle not much enlarged at fruiting. September.

Known thus far only from Shannon County (east-central U.S. from Maryland and Georgia west to Missouri). Tops of low dolomite bluffs and mesic upland forests.

This species is unusual in that its stems are strongly arched toward their tips resulting in flowers that appear inverted. Nonflowering material of A. uncinatum is superficially very similar to Delphinium exaltatum, and the two are easily confused. Differences are discussed under D. exaltatum. The few Missouri localities of A. uncinatum are disjunct from a similarly isolated station in southern Indiana. The species was first reported for the state by Summers (1997).

 
 


 

 
 
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