4 ARKIV FOR BOTANIK. BAND 10. w:o 17. 
1901», Band LXXIX. der Denkschriften der Mat.-nat. Klasse der 
kaiserlichen Akademie der Wissenschaften. Wien 1906. 
Hacker 1909a. E. HackEL, Graminee nove VI., Fedde, Rep. nov. spec. 
regn. veg., Band VII, No. 19/21, Nov. 1909. 
—— 1909b. E. Hacker, Graminex IJ., Ex herbario Hassleriano: Novitates 
paraguarienses III. Fedde, Rep. nov. spec. regn. veg., Band VII., 
No. 22/26, Dez. 1909. 
—— 1910. E. HacKkEL, Graminee III. Ex herbario Hassleriano: Novitates 
paraguarienses IV. Fedde. Rep. nov. spec. regn. veg., Band VIII., 
No. 1/3, Jan. 1910. 
Hırcacock 1903. A. S. HırcHcock, North american species of Leptochloa, 
Bull. of the U. S. Department of Agriculture, no. 33, 1903. 
Tribus Andropogenee. 
Andropogon (subgen. Schizachyrium) suleatus n. sp. 
Tafel 1, Fig. 3; Tafel 6, Fig. 3. 
Perennis, laxe cespitosus. Culmi cespitis numero 4—5, 
erecti vel subadscendentes, 5—8 dm alti, graciles, compressi, 
glaberrimi, leves, multinodes, e nodis superioribus ramos gig- 
nentes singulos vel binos, floriferos, sspe iterum ramosos, 
culmo breviores, paniculam formantes elongatam, perlaxam. 
Folia per culmum  zqualiter disposita, equitantia, glabra: 
vagine compresse, carinatz, striatule, glaberrimse, lzeves, inter- 
nodiis sepe dimidio breviores; ligula 1 mm fere longa, trun- 
cata, scarioso-membranacea, glabra; laminz breves, lanceolato- 
lineares, basi rotundat&, apice obtusiuscule, maxime 5 em 
longe, 4 mm late, patentes, rigidule, simpliciter complicate, 
glaucescentes, glaberrime, margine scaberule, tenuinerves. 
Spathe proprie racemorum anguste, obtusiuscule, glabre, 
pedunculo glabro denique multo breviores. Racemi gracillimi, 
fragiles, 3,5 cm longi, primo intuitu glabri, 15—17-articulati, 
articulis gracilibus, 3 mm longis, superne clavatis, margine 
altero prsesertim pilis cinctis articuli latitudine fere duplo 
longioribus, appendice urceolato, latere spiculis vergente late 
sinuoso, brevissime ciliato. Spicule sessiles lineari-lanceolate, 
3,2 mm longe, pallide viridule. Gluma I. lineari-lanceolata, 
acuta, bidentata, marginibus anguste implicata, dorso tuber- 
culis scaberula, insigniter sulcata, 4-nervis; gluma II. trian- 
gulari-lanceolata, 3,2 mm longa, cymbiformis, carinata, carina 
scabra, acuta, apice paulo constricta, pallide brunnea, 3-nervis, 
nervo medio ex apice ipsa glume truncata vel emarginata 
