YELLOW-EYED GRASS FAMILY. 



i. Xyris flexuosa Muhl. Slender Yellow-eyed Gra. (Fig. 893.) 



~/ir\**t. 



flexuosa Muhl. Cat. 5. 1813. 



Scapes slender, straight or sometimes slightly 

 twisted, 4 / -i8 / tall, 2-edged above, bulbous-thickened 

 at the base. Leaves narrowly linear, flat or becoming 

 twisted when old, I'-S'long, >"-i#"widc; head glo- 

 bose, or short -oblong, obtuse, 3 // -4 // high; bracts 

 broadly oval or slightly obovate, entire or somewhat 

 lacerate at the apex; lateral sepals linear, about as long 

 as the bracts, curved, finely fringed with short hairs 

 on the wingless keel; expanded flowers $"-4," broad. 



In swamps and bogs, Maine to Minnesota, south 

 Georgia and Texas. July-Sept. 



b 



2. Xyris montana H. Rio. Northern 

 Yellow-eyed Grass. (Fig. 894. ) 



! var. puiilla A C.nir. Man Kd. . 



Not .V. piutlla K Ilr 



Xyris 



1867." 

 Xyris montana H. Rie*. Hull. Torr Cl: 



Scapes very slender, straight or lightly twitted. 

 2-edgcd above, 2 / -i2 / tall, not bulbooa-thkfcMd at 

 the base. Leaves narrowly linear. I '-& long, ,S 

 wide, not at all twisted or but very slightly ao; head 

 oblong or ovoid, subacute, i#"-3" long; bractt oval 

 or obovate, rounded and finely lacerate at the apex. 

 lateral sepals linear, irregularly serrate- fimbriat* on 

 the winged keel above the middle, about aa long a* 

 the bracts. 



In bogs, Nova Scotia to Ontario and Michigan, tootli 



to the Pocoiio Mountains of Prnn*ylvania and t 

 Jersey. Our only specie* occurring on mumUiaa. Joty 

 Aug. 



3. Xyris communis Kunth. Southeni Yellow-eyed Grass. I ; -.^ .*95.) 



is communis Kunth, Enum. 4: 12. 1843. 

 Xyris dijffbrmis Chapm. Fl. S. States, 500. 1860. 



Scapes slender, slightly twisted, 2-edged above, 

 i-edged below, not thickened at the base, 6'-i8' 

 tall. Leaves linear or linear-lanceolate, flat, 3 / -io / 

 long, i // -4 // wide; head ovoid, or subglobose, blunt 

 or subacute, about %' long; scales ovate or oval, 

 mostly entire; lateral sepals lanceolate, the winged 

 keel fimbriate from the apex to below the middle; 

 corolla-lobes obovate, 2 // ~3 // long. 



In bogs, Maryland to Florida and Louisiana. Widely 

 distributed in tropical America. June-Aug. 



