Najas guadalupensis (Spreng.) Magnus

VS
3 7
NEW YORK BOTANICAL GARDEN
02648088
Herbarium of U. C. Riverside (UCR)
Plants of San Bernardino County, California, USA
Najas guadalupensis (Spreng.) Magnus	NAJA
Det. by G. Fred Hrusa, 2014.
San Bernardino Valley: city of Rialto, Santa Ana River, 10 m
downstream of the effluent discharge pool for the Rapid
Infiltration and Extraction Facility (RIX), 1.2 km NE (73°) of the
intersection of Riverside Ave. and Agua Mansa Rd. (San
Bernardino South 7.5’ Q.: 34°02'29"N, 117021'16"W, ±100m).
Alt.: 264m/867ft. Submerged in rapidly flowing warm (constant
75F), clear wastewater with 50-90 percent cover of mature
southern cottonwood willow riparian forest (Populus fremontii,
Salix spp., Baccharis salicifolia, etc.). Aquatic substrate with >75
percent cover of rocky cobble with patches of sand. Associated
aquatic species included Veronica anagallis-aquatica, and various
algae (Compsopogon coeruleus, Melosira varians, Terpsinoe
musica, and Stigeoclonium sp.)
Submerged aquatic (15-45cm water depth) forming large mounds
(30-60cm wide by 100-150cm long) attached to rocky substrate.
The rapid flow allowed prostrate growth with no portion of the
plant extending to the water surface despite stems over 1 m long.
Monoecious and diclinous. Female flowers and frt. smooth. Male
fls. deflexed, pinkish, anthers inconspicuous. Lvs. with minute
scattered teeth on margins.
Kai T. Palenscar s,n.
05 Jun 2014
Entered into UCR Database (79344UCR1 )
02648088