78 BULLETIN 772, U. S. DEPARTMENT OF AGRICULTURE. 
The three species are found in sandy soil in the Eastern States, 
Triplasis purpurea (fig. 36) from Maine to Florida and from the 
Great Lakes to Texas. Tvriplasis intermedia is confined to Florida; 
T. americana is found from North Carolina to Florida. All the spe- 
cies, besides the small panicles of cleistogamous spikelets in the upper 
sheaths, have additional cleistogamous spikelets, reduced to a single 
large floret, at the bases of the lower sheaths. The culms break at 
the nodes bearing these cleistogenes, the ripe seed remaining attached 
to the internode. The species are of no importance except as they 
tend to hold sandy soil. 
For a revision of the species of Triplasis, see Nash, Bull. Torrey 
Club 25:561-565. 1898. 
28. BLEPHARIDACHNE Hack. 
Spikelets 4-flowered, the rachilla disarticulating above the glumes 
but not between the florets; glumes nearly equal, about as long as 
the spikelet, compressed, 1-nerved, thin, acuminate, smooth; lemmas 
deeply 3-lobed, 3-nerved, the first and second sterile, containing a 
palea but no flower, the third fertile, the fourth reduced to a 3-awned 
rudiment. 
Low annuals or perennials, with short, congested, few-flowered 
panicles scarcely exserted from the subtending leaves. Species two; 
one in Argentina, one in Nevada. 
Type species: Hremochloé kingit S. Wats. 
Eremochloé S. Wats., in King, Geol. Expl. 40th Par. 382, pl. 40, 1871, not 
Eremochloa Btise, 1854. Two species are described, one H. kingit from Nevada 
and the other, in a footnote, H. bigelovii, from southern New Mexico. The two 
specimens are to be referred to the same species. 
Blepharidachne Hack., in Engl. and Prantl, Pflanzenfam. 27: 126. 1887. Ina 
footnote the name Blepharidachne is substituted for Hremochloé 8S. Wats., 
because of the earlier Eremochloa Btise. The author of Blepharidachne is given 
as “ Hook.,” a typographical error for Hack. 
Blepharidachne kingtit (S. Wats.) Hack. (fig. 37), found on the 
plains and foothills of Nevada (and New Mexico according to 
Watson), has been collected only a few times. 
A second species, Blepharidachne benthamiana (Wack.) Hitche. 
(Munroa benthamiana Hack.) grows in dry regions of Argentina. 
Tn habit it resembles our Munroa squarrosa, but in floral structure it 
agrees with Blepharidachne, having two sterile florets, one fertile 
floret, and a 38-awned rudiment. 
29. ORcUTTIA Vasey. 
Spikelets several-flowered, the upper florets reduced; rachilla per- 
sistent, continuous, the florets falling away or tardily disarticulating ; 
glumes nearly equal, shorter than the lemmas, broad, irregularly 2 to 5 
1In Kuntze, Rey. Gen. Pl. 32: 357. 1898. 
