70 L. Diels u. E. Pritzel. 
Stipa Drummondii Steud. (B. VII. 567) vel affinis. 
Hab. in distr. Austin pr. Menzies in silvulis apertis arenosis flor. m. 
Oct. (D. 5477). 
Stipa pyenostaehya Benth. (B. VIL. 568) vel affinis. 
Hab. in distr. Eyre pr. Philipps-River gregaria in silvis Eucalypti 
salmonophloiae lutosis flor. m. Oct. (D. 4855). 
Stipa arachnopus Pilger n. sp. 
Dense caespitosa, innovationibus numerosis, brevibus, foliis rigidis, 
angustissime convolutis instructis; culmis numerosis e caespite longe exsertis, 
gracilibus, erectis, paucifoliatis, e vagina suprema elongata ramulum pani- 
cula terminatum emittentibus, 50 cm circ. altis; foliorum lamina erecta, 
angustissime involuta, pungenti-acuta, in folio supremo brevissima, ceterum 
6—8 cm longa, cum vagina angusta et innovationibus in toto dense bre- 
vissime albido hispidulo-pilosis potius quam scaberulis, ligula brevi mem- 
branacea; panicula contracta, cire. ad 20 cm longa; rhachi terete; fasei- 
culis ramorum paucis (3—4), distantibus, ramis tenuibus erectis, internodia 
paniculae vix vel non aequantibus, parum divisis, paucispiculatis, scaberulis; 
spieulis ipsis breviter pedicellatis; glumis vacuis lanceolatis, 3-nerviis, prima 
apice sub-bidenticulata, e nervo medio scabro breviter producta, 7—8 mm 
longa, superiore breviore et parum angustiore, apice subdenticulata, 5— 
6 mm longa; gluma florifera cum callo acutissimo hirsuto circ. 4 mm longo 
4 mm longa, flavescente vel demum brunnescente, dense pilis albido-flaves- 
centibus adpresse hirsuta; arista bene cum gluma articulata, bigeniculata, 
parte inferiore torta 45—416 mm longa, scabra vel scabro-hirtula, parte 
superiore scaberula 48 mun circ. longa. 
Hab. in distr. Coolgardie pr. Bullabulling in silvis apertis lapidoso- 
lutosis fl. m. Oct. (D. 5954). 
Species notabilis. 
Stipa nobilis Pilger n. sp. 
Dense et compacte caespitosa, elata; innovationibus intravaginalibus, 
paucifoliatis, foliis rigidis erectis, angustissime involutis; culmis compluri- 
bus, elatis, 60 cm cire. cum panicula altis; foliis ad culmum 4—-5, superiori- 
bus longe distantibus, vaginis plerumque internodiis longioribus, ex parte 
Sese tegentibus, vagina suprema 47—19 cm longa; foliorum lamina an- 
gustissime filiformi-involuta, erecta, rigida, pungenti-acuta, leviter aspera, 
innovationum nonnunquam pilis brevibus albidis inspersa, ad 20 cm longa; 
vagina striata collo extus barbata, foliorum superiorum striata, glabra, in- 
feriorum et innovationum puberula, ligula brevi, truncata, dense apice 
barbata; panicula basi in vagina folii supremi inclusa, elongata, con- 
tracta, 47—27 cm longa; ramis verticillatis, erectis plerisque paucispieulatis, 
nonnullis elongatis, ad 40 cm longis, parum divisis; spiculis angustis, bre- 
viter pedicellatis vel subsessilibus; glumis vacuis tenuibus, albido-nitentibus, 
anguste lanceolatis, acuminatis, acutissimis, 3-nerviis, subaequilongis 15— 
