STIPEAE PLATENSES 11,'} 



Spici/Iae laxkisculae crectae v. patulae, glumis e hyalino vire- 

 scentibus v. plus minusve purpurascentibus, lanceolatis subaequilon- 

 gis, carinatulis, breviter acuminato-attenuatis non v. vix mucro- 

 nato-aristulatis, flosculos parum superantibus, infera 1-3-nervi (6-9 

 mm long. ==1,25-1, 50 mm lat.) superam (5,75-8 mm Iong.=l,30- 

 1,75 mm lat.) 3-nervem vix superante; flosculis fusoideis teretibus 

 V. e latere subcompressulis (cum anthopodio et arista 16-23 mm 

 long.^cum anthopodio sine arista 4,50-6 mm Iong. = sine anthopodio 

 et arista 4,25-5,75 mm long. = 0,75-1, 15 mm diam.), glumella infe- 

 ra vix coriacea pallida, dorso et ventre laxc breviter adpresseque 

 pilosula (lateribus glabris v. subglabratis); glumella supera parum 

 breviore (4,25-5,50 mm long.) rigidula opaca pubescente, binervl 

 non carinata nec sulcata; anthopodio conoideo (,0,20-0,30 mm long.) 

 dense breviterque albo-villoso. 



Arista subcrassiuscula non v. aegre caduca (11-17 mm long.) 

 rigidula nuda scabriuscula, infra medium obsolete 2-genicuIata, genu 

 Inflmo subobsoleto, parte suprema recta reliquam partem inferam, 

 flosculo addito, leniter breviore. Articulatio glumellae cum arista 

 eximia, sed paruni perspicua, vix nervoso-annuliformis, pilis bre- 

 vibus adpressis paucis ornata. 



Hujus speciei formae duae sequentes distinguendae: 



a) minor Speg. culmis folia longe superantibus gracilibus (400-500 

 mm alt.); foliis semper plus minusve convoluto-setaceis (0,5-1 mm 

 diam.), panicula angusta depauperata (100-150 mni long.) basi longe 

 nuda; glumis e hyalino purpurascentibus, infera 1 nervi v. sub-3- 

 nervi, nervis lateralibus vix evolutis (6-6,25 mm long. = 1,25-1,30 

 mm lat.), supera 3-nervi (5,75-6 mm long. = 1,.30-1,50 mm lat.), 

 flosculis parum compressulis subloretibus, fcre ubique aequaliter pu- 

 bescentibus (cum anthopodio sine arista 4,50-5 mm Iong. = 0,75-0,9(3 

 mm diam.), arista subtenui (10-15 mm long.), pilis articulationis 

 sat numerosis saepius longiusculis. 



Adest in locis siccioribus saxosis v. sabulosis. 



b) major Speg. culmis folia non v. vix superantibus validi (500- 



