Typha latifolia being the most common; Cyperaceae abound, Marsilea in profusion, Azolla, Mentha, Epilobii sp. as before, Lemna, Valisneria.    From Wordnik.com.  [Journals of Travels in Assam, Burma, Bhootan, Afghanistan and the Neighbouring Countries] Reference

Plant species that are very scarce in the area grow there; this is true of the ferns: Acrostichium aurem, very common in the delta areas of the Orinoco and in the mangrove areas, Marsilea ancylopoda, Nephrolepis hirsutula, Pitygramma trifoliata, as well as the water lily Eichornia crassipes.    From Wordnik.com.  [Paraguana xeric scrub] Reference

Marsilea foliis subulatis semicylindricis articula - tis.    From Wordnik.com.  [Species plantarum : exhibentes plantas rite cognitas ad genera relatas, cum differentiis specificis, nominibus trivialibus, synonymis selectis, locis natalibus, secundum systema sexuale digestas] Reference

Marsilea grows everywhere on the flats; and a fine little pea plant with.    From Wordnik.com.  [Journal of an Overland Expedition in Australia : from Moreton Bay to Port Essington, a distance of upwards of 3000 miles, during the years 1844-1845] Reference

Marsilea (salvinioides) foliis • oppositis utrinque pilosis longe radicatis globiferis.    From Wordnik.com.  [Species plantarum : exhibentes plantas rite cognitas ad genera relatas, cum differentiis specificis, nominibus trivialibus, synonymis selectis, locis natalibus, secundum systema sexuale digestas] Reference

Silurian beds the more highly organised vascular cryptogams appear in the form of rhizocarps -- plants allied to Marsilea and Azolla, -- and a very little higher, ferns, lycopods, and even conifers appear.    From Wordnik.com.  [Darwinism (1889)] Reference

Answer: Marsilea quadrifolia.    From Wordnik.com.  ['Rubicon' Boss Henry Bromell, Bringing Jumpy Back] Reference

Shamrock, Water Marsilea quadrifolia 91, 116.    From Wordnik.com.  [The Field Guide to Wildlife Habitats of the Eastern United States] Reference

Marsilea (natans) foliis oppositis simplicibus.    From Wordnik.com.  [Species plantarum : exhibentes plantas rite cognitas ad genera relatas, cum differentiis specificis, nominibus trivialibus, synonymis selectis, locis natalibus, secundum systema sexuale digestas] Reference

Pulicaria, Epilobium, Sagittaria, Cyperaceae, Marsilea!.    From Wordnik.com.  [Journals of Travels in Assam, Burma, Bhootan, Afghanistan and the Neighbouring Countries] Reference

Ulva, Valisneria, Marsilea, Herpestes, Jussieua repens, Fumaria common in fields.    From Wordnik.com.  [Journals of Travels in Assam, Burma, Bhootan, Afghanistan and the Neighbouring Countries] Reference

In the marshes Ammannia rotundifolia, Cyrilla, Azolla, Marsilea, and Salvinia, Serpicula.    From Wordnik.com.  [Journals of Travels in Assam, Burma, Bhootan, Afghanistan and the Neighbouring Countries] Reference