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Published In: Bulletin of the Torrey Botanical Club 27(10): 516–517. 1900. (Bull. Torrey Bot. Club) Name publication detailView in BotanicusView in Biodiversity Heritage Library
 

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

 

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14. Juncus interior Wiegand (inland rush)

Pl. 93 a, b; Map 371

Aerial stems 15–70 cm tall, caespitose, lacking noticeable rhizomes. Leaves 3–6, all basal, 1 or 2 of them sometimes lacking leaf blades, the auricles at the top of the sheaths 0.5–1.0 mm long, loose, white, papery, rounded, the leaf blades 10–30 cm long, 1/3–1/2 the height of the aerial stem, 0.5–1.0 mm wide, folded longitudinally, or with the edges rolled toward the middle, lacking cross-partitions. Inflorescences condensed or less commonly diffuse panicles, the branches mostly flexuous and ascending, the longest leaflike bract at the base usually longer than the inflorescence. Flowers mostly occurring singly or in loose clusters of 2–6 near the branch tips, 20–70 per inflorescence, each with a pair of small, ovate to triangular, attenuate, closely subtending bracts. Perianth 3.0–4.5 mm long, the sepals as long as or slightly longer than the petals, lanceolate, the tips attenuate. Stamens 6 per flower. Fruits 3.0–4.5 mm long, slightly shorter than the perianth, ovate to obovate in outline, the tip usually broadly rounded, 1-locular with 3 incomplete cross-walls protruding about halfway to the middle of the fruit. Seeds 0.3–0.5 mm long, both ends abruptly tapered to darkened points. 2n=80. May–August.

Scattered throughout the state, but uncommon in the Mississippi Lowlands Division (Ohio and Tennessee west to Montana and New Mexico, Canada). Dry to mesic upland prairies, savannas, glades, pastures, railroads, and open, disturbed areas, on various substrates.

 


 

 
 
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