Valley Redstem, more...
[Ammannia coccinea subsp. purpurea (Lam.) Koehne, more]
From Flora of Indiana (1940) by Charles C. Deam
Muddy borders of sloughs, ponds, bayous, reservoirs, and streams and in dredged ditches. Local but often abundant where found.
Indiana Coefficient of Conservatism: C = 2
Wetland Indicator Status: OBL
Amphidiploid of nos. 1 [Ammannia auriculata Willd.] and 3 [Ammannia robusta Heer & Regel]; stems often freely branched; cymes mostly with 3 or more fls, subsessile or on a short stout peduncle to 4+ mm; pedicels short and stout, or none; hypanthium mostly 2-3.5 mm; pet 1.7-2.5+ mm, deep rose-purple; anthers deep yellow; fr 3.5-4.5 mm thick; 2n=66. N.J. and Pa. to N.D., s. to trop. Amer.; Calif. July-Sept.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
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