APPENDIX. 



2-7 inches high. In tide -water mud, or shallow water 

 on the coast, Conn, to Fla. and Ala. 

 Sagittaria ^- n ovate-leaved species confined to the 



platyphyila river swamps of the southwest. Leaves 

 July-Septem- ovate to ovate-lanceolate, acute tipped and 

 rounded at the base, 9-11 veined. Flowers 

 of the second order, with 20 stamens, the broad base of 

 the filament fine-hairy. 7-20 inches high. Mo. and 

 Kan. to Miss, and Tex. 



Page 18 



Xyris Smaiiiana A vei T tal1 species 15-36 inches high, 

 July-Septem- with broad linear or sword-shaped leaves 

 ber often | inch wide, rather rigid and not 



twisted. Flower-stem slender and flattened near the 

 top. Heads long-ovoid, J inch in diameter, the green 

 scales with an ochre-yellow edge. In rich soil of boggy 

 shores, and often in water. East Mass, to Fla. 

 Xyris fimbriata Another tall, stout species, with broad 

 July-Septem- straight, linear leaves, and a straight 

 ber flower-stem flattened and roughened on 



the edges toward the top. Heads ellipsoidal, J inch in 

 diameter, the long fringed sepals extending conspicuously 

 beyond the bracts. 2-3 feet high. Wet pine barrens of 

 N. J., to Fla. and Miss. 



A southern species with linear and 

 Xyris arenicola twisted leaves proceeding from a thick 

 May-August , ., 



bulbous shiny brown base, the bulb sur- 

 rounded by broad terra-cotta colored scales, the remnants 

 of old leaves. Flower-stem twisted, the cylindrical head 

 about 1 inch long, the sepals fringed and conspicuous. 

 Pine-barrens, N. J. to Fla. and Miss. 



Page 20 



A tall and slender species naturalized 

 Asiatic Day . ... 



Flower from Asia, with lance-shaped leaves, and a 



Commelina heart-shaped acute spathe, the margins of 

 communis which are not united. Flowers light violet 



Light violet i inch or so broad. Stems 1-3 feet long. A 

 July-October 



common weed of dooryards and gardens in 



the northerly part of its range. On moist alluvial banks, 

 east Mass, and Del. to Fla., west to Kan. and Tex. 



542 



