34 



Rare and endangered plant list: Vermont 



alkalinity: mean 4.3 mg/1; range 1/0-8.5 mg/1; (4) 

 pH: mean 6.4; range 5.6-7.0; (4) 



4. Xyris smalliana Nash. Fig. 9, Plate 4, Map 18 



Uncommon to rare in acid bogs, and swamps and on muddy 

 shores in New England. This is generally New England's largest and 

 most robust Xyris. Occasionally X. difformis approaches it in size. 

 Krai (1966) includes X. congdonii Small as a synonym under X. 

 smalliana. Range extends from southern Maine southward along the 

 coastal plain to Florida and Mississippi. 



Rare and endangered plant list: Maine, Rhode Island, Connecticut 



Literature Cited and 

 Selected References 



Harper, R. M. 1905. Two misinterpreted species of Xyris. Torreya 



5: 128-130. 

 Krai, R. 1966, Xyris (Xyridaceae) of the continental United States 



and Canada. Sida 2: 177-260. 



Malme, G. O. K. 1937. Xyridaceae. N. Amer. Flora 19: 3-15. 



ERIOCAULACEAE 



Eriocaulon (Pipe wort) 



Emersed or submersed plants of sandy, gravelly, or peaty shores 

 of rivers, lakes, and ponds or saline water of estuaries. Perennial, often 

 tufted; roots conspicuously septate; leaves basal, linear, smooth, 

 loosely cellular; inflorescence capitate; flowers unisexual, monoecious 

 or dioecious, subtended by receptacular bractlets; fruit a loculicidal 

 capsule. 



Key to Species 



1. Mature heads hemispherical (fig. lOF), dull gray or straw-colored, 

 3-4 mm broad; bractlets and perianth parts sparingly clavate- 

 pubescent, some parts smooth; involucral bracts tend to remain 

 ascending on flowering and fruiting heads, concealing the bractlets 



