 Agrostidez.] O0. GRAMINEZE. 1145 
Gram. t. 213 (Muehlenbergia). | Fourn. Gram, Mez. 92, 
Genus eh teribus plerisque JMueMenbergic affine, et etiam habitu ab M. diffusa non longe 
recedit. 
116. Lyeurus, H. B. et K. Nov. Gen. et Sp. i. 141, t. 45. (Pleopogon, Nutt. in Journ. 
Acad. Philad. ser. 2, i. 189.)—Spicule 1-flore, anguste, secus rhachin spice densse cylin- 
dracez v. racemi spiciformis sparss, sepius geminse, sessiles v. breviter. pedicellatz, 
rhachilla brevissima supra glumas inferiores subarticulata, ultra florem non producta, 
flore hermaphrodito, spiculis tamen sterilibus sepe intermixtis. Glums 3, extima vacua 
nervis 2 rarius 3 in aristas productis, secunda pariter vacua minor, angustior, l-aristata ; 
tertia florens cseteris major longiusque aristata, 3-nervis; palea paullo minor, tenuior, 
9-nervis v. 2-carinata, brevissime 2-dentata. Stamina 3. Styli breves, distincti, stigma- 
^ibus plumosis. Caryopsis gluma vix indurata inclusa, libera.— Gramina basi ceespitosa, 
adscendentia v. erecta, foliis angustis siccitate ssepius conyolutis. Spica e vagina folii 
'supremi breviter: pedunculata, angusta, cylind spiculis is insequaliter pedi- 
cellatis v. sul ilibus, irregulariter solitariis geminis v. fasciculatis ; steriles masculee v. 
ananthse preesertim in parte superiore spice plures, ex Kunthio in utroque pari altera 
perfecta altera sterilis, ssepe tamen, si geminze, utramque perfectam v. utramque sterilem 
invenimus. 
Species editze 2, inter se vix distinguendze, Americee incolze. Kunth, Enum. PI. i. 203. 
117. Eehinopogon, Beawe. Agrostogr. 42, t. 9, f. 5.  (Hystericina, Steud. Syn. Pl. 
:Glum. i. 30.)—Spicule l-fors, in paniculam dense capitulif v. spiciformem con- 
ferie, rhachilla supra glumas inferiores articulata, ultra florem in stipitem brevem 
producta, flore (in plerisque) hermaphrodito. Glum: 3, 2 exteriores sub articulatione 
persistentes, vacuce, subzequales, carinate, acutze ; tertia florens tenuis, lata, D-nervis, apice 
-9-loba, lobis lateralibus brevibus acutis, medio in aristam tenuem rectam producto ; palea 
brevior, angusta, 9-nervis. Stamina 3. Styli distincti, stigmatibus brevissime plumosis. 
Caryopsis gluma inclusa, libera.—Gramen ad dens v. elati 1 glabrum, foliis 
planis scabris. Panicula*spiciformis, ovoidea v. cylindracea, longe pedunculata, aristis 
numerosis echinata. Spieulw irregulariter fasciculatz, nonnullee minores flores masculos 
foventes v. interdum ananthze. 
Species l, Australie et Nova Zelandiwe incola. BentA. Fl. Austral. vii. 5699. Labill. Pl. Nov. 
Holl. t. 21 (Agrostis).  -Buchan. N. Zeal. Grass, t. 13 B. 
118. Diplopogon, R. Br. Prod. 176. (Dipogonia, Beawv. Agrostogr. 125.)—Spicule 
1-florse, in panicula capituliformi ovoideo-globosa dense confertw, rhachilla supra glumas 
inferiores articulata, ultra florem non producta, flore hermaphrodito. Glum:e 3, 2 infe- 
riores sub articulatione persistehtes; angustz, carinatz, in aristam brevem tenuem rectam 
produciz ; tertia florens angusta, cirea florem luta, nervis lateralibus in aristas 
breves rectas productis, arista centrali terminali longiuscula rigida basi incrassata torta v. 
refracta ; palea angusta, hyalina, prominenter 9-nervis, breviter 2-aristata. Stamina 3. 
Styli distincti, stigmatibus plumosis. Caryopsis. . . .—Gramen' perenne, tenue at 
igidi 1 foliis lut til Panicula capituliformis, terminalis, peduncu- 
lata, aristis supra glumas purpurascentes ssepius tortis albidisque insignis. 
Species unica, Australize austro-oecidentalis ineola. —.BentA. Fl. Austral. vii, 573. 
119. Amphipogon, R. Br. Prod. 175. (JEgopogon, Beawv. Agrostogr. 122, t. 22, f. 4, 
non. Willd. Pentacraspedon, Steud. Syn. Pl. Glum. i. 151.)—Spicule 1-forz, in panicula 
densa capituliformi v. spiciformi confertz, rhachilla supra glumas inferiores articulata, 
ultra florem non producta, flore hermaphrodito. Glumse 3, 2 inferiores vacuze, sub arti- 
latione persistent. b , 9-nerves, acutis v. in aristam brevem producte, v. 
rarius apice 3-fidee, lobis acutis ; tertia florens circa florem involuta, alte 3-fida, lobis acutis 
v. in aristas rectas produciis ; palea glumam subsquans, apice in lobos 2 rigidos v. aristi- 
