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Published In: Öfversigt af Förhandlingar: Kongl. Svenska Vetenskaps-Akademien 12: 166. 1855. (post 14 Mar 1855) (Öfvers. Förh. Kongl. Svenska Vetensk.-Akad.) Name publication detailView in Biodiversity Heritage Library

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


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2. Miscanthus sinensis Andersson (eulalia, plume grass)

Pl. 123 a, b, f–h; Map 504

Plants with short rhizomes, forming dense clumps. Flowering stems 150–300 cm long, hairy at the nodes. Leaf sheaths glabrous or the lowermost hairy. Leaf blades 30–100 cm long, 5–12 mm wide, glabrous or sparsely hairy, often somewhat glaucous, the margins strongly roughened and sometimes curled under. Inflorescences 10–35 cm long. Spikelet bases with the hairs slightly shorter than to slightly longer than the spikelet. Glumes 3.5–5.0 mm long, faintly 3‑ or 5‑nerved, glabrous or short‑hairy toward the tip. Fertile lemmas 2.0–3.5 mm long, the tip with 2 narrow teeth, with a spirally twisted and usually bent awn 6–15 mm long. 2n=35, 36, 38, 40, 41, 42, 57. August–September.

Introduced, uncommon, known thus far from Warren County and St. Louis (native of eastern Asia, widely cultivated and escaping sporadically in the U.S.). Railroads and open, disturbed areas near ponds.

Steyermark (1963) included only M. floridulus (Labill.) Warb. ex K. Schum. & Lauterb. for Missouri, but he noted that the material had originally been determined as M. sinensis. He suggested that these taxa differed in leaf width and degree of exsertion of the inflorescences from the leaf sheaths. Mühlenbach (1979), however, cited the same collections as M. sinensis. Gereau (1987) included both taxa in his list of the state’s grass flora. However, the characters used by Steyermark (1963) to differentiate these species do not work well, and instead the relative length of the main axis of the panicle and spikelet size are more reliable features to separate the two. The collections are fairly homogeneous for these features. None of them has the main axis of the panicle as long as or longer than the side branches, which is a critical feature of M. floridulus. Thus, the Missouri plants with short rhizomes and awned spikelets are all treated here as M. sinensis, and M. floridulus is reluctantly excluded from the flora. It should be noted, however, that spikelets in most of the specimens from midwestern states are slightly shorter than the values listed in treatments of the species in Asia (Lee, 1964a, b; Meyer and Walker, 1965). Plants of M. sinensis with variegated (white cross‑banded) leaves from Warren County may be called f. zebrina (G. Nicholson) Nakai.



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