Orontium (Golden-club) 



Emersed or submersed plants of shallow waters, and sandy, 

 muddy, and peaty shores. Perennial, growing from a deep rhizome; 

 leaves basal, long-petioled, entire; flowers perfect, borne on a spadix, 

 spathe reduced, obscure at base of scape; fruit a blue-green or brownish 

 utricle. 



1. Orontium aquaticum L. Fig. 1, Map 2 



Rare, in shallow water and along shores of rivers and ponds in 

 New England. This species is presently known from less than 20 sites 

 throughout southern New England. Range extends from Massachu- 

 setts and central New York, Pennsylvania, West Virginia, and 

 Kentucky, south to Florida and Louisiana. 



Rare and endangered plant lists: New England, 

 Massachusetts, Rhode Island, Connecticut 



Peltandra (Arro>v-arum) 



Emergent perennial, growing from thick fibrous or subtuberous 

 roots; leaves basal, long-petioled, blades hastate or sagittate; upper 

 flowers of the spadix staminate, lower ones pistillate; fruit an amber or 

 green berry. 



1. Peltandra uirginica (L.) Schott and Endl. Fig. 2, Map 3 



Common in damp meadows, bogs, and swamps and along shores 

 of rivers, ponds, and streams from central New England south. Sterile 

 plants are often confused with several species of Sagittaria or 

 Pontederia cordata L., but can be easily differentiated by the two veins 

 paralleling the leaf margins and by a single prominent midvein and a 

 prominent vein extending into each basal lobe. This is a highly 

 variable species that has had many dubious forms based solely on leaf 

 shapes. Range extends from central Maine and southern Quebec west 

 to Michigan, Ontario, and Wisconsin, south to Florida, southeastern 

 Oklahoma, and Texas. 



alkalinity: mean 15.8 mg/1; range 1.0-89.0 mg/1; (18) 

 pH: mean 7.0; range 5.6-9.5; (15) 



Calla (Water-arum, Wild Calla) 



Emersed perennial, growing from a long creeping rhizome; leaves 

 cordate, long-petioled; flowers perfect, borne on a spadix; spathe ovate, 



