544 MISC. PUBLICATION 200, U. S. DEPT. OF AGRICULTURE 



coriaceous, smooth and shining, beaked with the persistent style; 

 seed free from the pericarp. Robust perennial marsh grasses, with 

 stout creeping rhizomes, broad flat blades, and large open panicles. 

 Type species, Zizaniopsis microstachya Nees. Name from Zizania, a 

 generic name, and Greek opsis, appearance, 

 alluding to the similarity to Zizania. 



1. Zizaniopsis miliacea (Michx.) Doell and 

 Aschers. (Fig. 1144.) SOUTHERN WILDRICE. 

 Culms 1 to 3 m tall or even taller; blades 

 glabrous except the very scabrous margins, 1 to 

 2 cm wide, the midrib stout; panicle rather 

 narrow, nodding, 30 to 50 cm long, the 

 numerous branches fascicled, as much as 15 to 

 20 cm long, naked at base; spikelets 6 to 8 mm long, short-awned, the 

 staminate slender, the pistillate turgid at maturity. 01 Marshes, 

 creeks, and river banks, Maryland to Kentucky and Oklahoma, south 

 to Florida and Texas (fig. 1145). 



115. LUZIOLA Juss. 



Spikelets unisexual, 1 -flowered, disarticulating from the pedicel, 

 the staminate and pistillate spikelets in separate panicles on the 

 same plant; glumes wanting; lemma and palea about equal, thin, 

 several to many-nerved, lanceolate or oblong; stamens 6 or more; 

 stigmas long, plumose; grain free, globose, finely striate. Creeping, 

 low or delicate perennials, with narrow flat blades and terminal and 

 axillary panicles. Type species, Luziola peruviana. Name modified 

 from Luzula, a genus of Juncaceae. 



Pistillate spikelets ovoid, about 2 mm long; staminate and pistillate panicles on 

 the same shoot 1. L. PERUVIANA. 



Pistillate spikelets oblong-lanceolate, 4 to 5 mm long; staminate and pistillate 

 panicles on different shoots 2. L. BAHIENSIS. 



1. Luziola peruviana Gmel. (Fig. 1146.) Culms slender, branch- 

 ing, the flowering shoots ascending, 10 to 40 cm tall; blades 1 to 4 

 mm wide, exceeding the panicles ; staminate panicles terminal, narrow, 

 the spikelets about 7 mm long; pistillate panicles terminal and axil- 

 lary, 3 to 6 cm long, about as wide, the spikelets about 2 mm long, 

 ovoid at maturity, abruptly pointed. 91 Muddy ground and wet 

 meadows, Florida (Pensacola) and Louisiana (vicinity of New Orleans) ; 

 Mexico and Cuba, south to Argentina. 



2. Luziola bahiensis (Steud.) Hitchc. (Fig. 1147.) Extensively 

 stoloniferous, the flowering shoots not more than 15 cm tall, mostly 

 less; blades 2 to 4 mm wide, much exceeding the panicles; panicles 

 mostly terminal, the staminate few-flowered, the spikelets about 5 

 mm long; pistillate panicles 4 to 6 cm long, the few stiff branches 

 finally spreading, with a few appressed oblong-lanceolate spikelets 4 

 to 5 mm long, the lemma and palea much exceeding the caryopsis. 

 9i Lagoons and banks of streams, southern Alabama; Cuba. 

 Brazil. 



116. HYDROCHLOA Beauv. 



Spikelets unisexual, 1-flowered, disarticulating from the pedicel, 

 the staminate and pistillate spikelets in separate panicles on the same 

 plant; glumes wanting; staminate spikelets with a thin 7-nerved 

 lemma, a 2-nerved palea, and 6 stamens; pistillate spikelets with a 



