220 BULLETIN 772, U. S. DEPARTMENT OF AGRICULTURE. 
nate flower; fertile lemma indurate, minutely papillose-rugose, 
mucronate or awned, the awn often readily deciduous, the mar- 
gins slightly inrolled. 
Annual or perennial, often 
branching grasses, with termi- 
nal panicles consisting of sev- - 
eral or many spreading or 
appressed racemes, usually 
rather closely arranged along 
the main axis. Species about 
15, in the warmer parts of the 
~ world, mostly in America; 6 
species in the United States, in 
the Southern and Southwest- 
ern States. 
Type species: Hriochloa distachya 
Teh, 383 1k 
Eriochloa H. B. Kk., Nov. Gen. and 
Sp. 1: 94, pls. 30 and 31. 1816. Two 
species are described, H. distachya 
and EH. polystachya, and both are 
figured. The first is chosen as the 
type. ~> 
Helopus Trin., Fund. Agrost. 108, 
pl. 4. 1820. The only species men- 
tioned is H. pilosus, which is the 
— 
IS 
Srna 
SSR 
——————————— 
| j fl ‘ 
Fic. 132.—St. Augustine grass, Stenotaphrum secundatum. Plant, X 2; two views of 
spikelet and fertile floret, < 10. 
same as Hriochloa punctata. Trinius incorrectly cites Milium ramosum Retz. 
as a synonym of Helopus pilosus. 
Oedipachne Link, Hort. Berol. 1: 51. 1827. The only species mentioned is 
Milium punctatum WL. (Eriochloa punctata (L.) Hamilt.), upon which Oedi- 
pachne punctata is based. 
