20. Stipa. GR AMINE AE. 65 



B. Ligule ciliate. 



E. Flowering glume shortly bilobed. 



Outer glume purplish 8. eremophila 8. 



Outer glumes straw-colored 8. flavescens 9. 



E. Flowering glume entire or with microscopic lobes at 

 summit. 

 F. One or both outer glumes usually truncate or toothed 

 at summit. 

 Awn pubescent ; flowering glume rather broad ... 8. pubescens 10. 

 Awn villous below bend ; flowering glume narrow S. horrifolia 1 1 . 

 F. Outer glumes acute, not toothed. 



G. Stem stout ; awn villous in 'ower part S. semibarbata 12. 



G. Stem slender ; awn pubescent. 



Fruiting glume broad, golden-brown 8. eremophila 8. 



Fruiting glume narrow, whitish S. scabra 13. 



1. S. elegantissima, Labill. Tall, glabrous grass ; panicle large and very loose, the 

 rhachis and branches plumose with long, spreading hairs ; both outer glumes 3 -nerved, 

 the lower one longer and broader, 10-12 mm. long, hairy, acuminate ; flowering glume 

 glabrous, shortly bilobed ; awn 3-5 cm. long, pubescent. 



Most parts of the State except the South-East. Aug. -Dec. 



2. S. Tuckeri, F. v. M. A small grass, with pubescent flattish leaves ; panicle -branchcv 

 shortly plumose , outer glumes short, acuminate ; flowering glume glabrous. 



Murray River (according to Tate's Flora, but his herbarium contains no specimens, 

 and those in the Melbourne herbarium are only from the Lachlan and Darling district 

 in New South Wales). 



3. S. teretifolia, Steud. Slender, almost glabrous ; leaves very long, erect, filiform, 

 rigid, almost pungent -pointed ; ligule oblong, about 2 mm. long, glabrous ; panicle 

 narrow, 12-20 cm. long ; outer glumes equal, broad, acute, whitish, 15-20 mm. long, the 

 1st 3-nerved, the 2nd 5-nerved ; flowering glume 10-12 mm. long, villous all over, with 

 2 lanceolate hairy lobes on each side of the awn, 2-3 mm. long ; awn 3^-4 cm. long, finely 

 pubescent, twice bent ; anthers 6-8 mm. long. 



Sea-coast. Sept. -Nov. 



4. S. Muelleri, Tate, Stems wiry, glabrous, leafless except for the small erect lamina ; ' 

 ligule short, glabrous ; spikelets 1-3 on long pedicels, forming a short raceme ; outer 

 glumes acute, subequal, 20-30 mm. long, the 1st 3-nerved, the 2nd 5-nerved ; flowering 

 glume shorter, pubescent, bilobed ; awn 5-7^ cm. long, minutely pubescent. 



Stringybark forests, Uraidla ; Mount Jagged. Nov. Apparently very rare. . ■; , 



5. S. setacea, R. Br. Stems slender ; nodes minutely pubescent ; leaves filiform, 

 slightly scabrous; ligule rounded, glabrous; sheaths often bearded at orifice; panicle 

 rather narrow ; outer glumes hyaline, acute, subequal, narrow, the 1st sub -3 -nerved, 

 9-13 mm. long, the 2nd 3-nerved, 8-11 mm. long ; flowering glume 3-4 mm. long, narrow, 

 pubescent, with longer hairs in the lower half ; awn very slender, 5-6 cm. long. 



/ Adelaide plains ; South-East. Sept. Dec. 



Var. latiqlumis. Ligule 3-5 mm. long ; outer glumes broad, the 2nd sub-5-nerved ; 

 flowering glume broad, contracted and shortly bearded at summit ; awn 2J-3J cm. long, 

 rather stout, twice bent. 



Belair ; Minnipa, E.P. 



6. S. aeroeiliata, Reader. Stems stout, rather tall ; nodes glabrous ; leaves long, 

 ribbed, rigid, glabrous, flat or the upper ones subulate, often reflesed ; ligule 5-7 mm. long, 

 glabrous, truncate ; panicle large, with long spreading capillary branches ; outer glumes 

 hyaline, straw-colored, unequal, the 1st 10-13 mm. long, sub-3-nerved, acute, the 2nd 

 8-9 mm. long, 3-nerved, obtuse or notched, both strongly ciliate at summit ; flowering 

 glume 4 mm. long, pubescent, entire ; palea ciliate ; awn slender. 6-8 cm. long. 



Enfield; Murray lands ; Flinders Range ; North -West ; South-East. Sept. -Jan. 



7. S. scelerata, Behr. Erect grass about 30 cm. high, glabrous except sometimes the 

 lower leafsheaths ; stems rigid, wiry ; lower leaves flat, stiff, prominently ribbed, finally 

 inrolled ; ligule about 5 mm. long, glabrous, jagged at summit ; panicle rather compact ; : 

 outer glumes subequal, hyaline, acuminate, the 1st 7-8 mm. long, sub-3-nerved ; the 

 2nd 6-7 mm. long, 3-nerved ; flowering glume nearly 4 mm. long, pubescent or subvillous ; 

 awn slender, pubescent, \\-l cm. long. — 8. setacea.. R. Br. var. lati folia, Benth. 



Flinders Range. Sept. -Dec. 



8. S. eremophila, Reader. Stems slender, erect ; nodes more or less pubescent ; leaves 

 subulate, almost filiform, glabrous, or the radical ones scabrous ; ligule short, ciliate, 

 accompanied usually by longer hairs at the orifice of the sheath ; panicle loose ; 2 outer 

 glumes hyaline, unequal, acute, often purplish, the 1st 15-22 mm. long, prominently 



C 



