176 A R I S T I D A. Botanique. 



An varietas A. pungcntis Desf.? sed spicularum magnitudo in spcci- 

 minibus oninihus invcsligatis valdc constans, etiam panicula dcnsius 

 florifera ac in icone Desfontainesii; folia crccto-patentia, strictissima 1. 

 rarius quidpiam arcuata. 

 t 95. ArisUda pimgcns Dcsf. Fl. Atlant. 1. (1798) p. 109. tab. 35. iKimth 

 Agr. syn. suppl. p. 150. Culmo glahro; paniculac (ovalis, scmipe- 

 dalis, strictac, apicc lucidulue, basi vaginatac) radiis patcntibus 

 (solitariis, basi et supcrne ramosis); glumis acutis, suhacqualibus. 

 5| — 7^ Uneas longis; (flosculo 3| lineali; stipite aristae articulatim 

 deciduac minimo;) setis (patcntibus) omnibus (acqualitcr a basi) 

 pennatis, suhacqualihus, flosculo duplo triplovc longioribus (semi- 

 poUi(-arihus.) Diagn. scc. dcscr. (ct iconcm) Dcsfont. 

 Arthratherum pungens P.B. Agrost. (1812; p. 33. tah. 8. fig. 9. R.S. 

 Syst. 2. p. 398. 



In arcnosis humidis propc Sfax ct in deserto. 5 (Dcsf. j; prope El- 

 Tor et in arcna mobili pr. Gaza. (tcstc Decaisnc.) 



"Culmus percnnans, fruticosus, erectus, 1| — k pcdalis, lacvis, in- 



ferne ramosus. J^olia glabra, rigida, suhulata, acutissima, patcnlia, ca- 



naliculata, pungcntia, 3 — 10 polliccs longa» Dcsf. 



96. Aristida scoparia n. Culnio, nodis vaginisquc glahris; ligulis brevissime 



ciliatis; paniculac ohlongae, strictiusculae, apicc suhccrnuac, lii- 



cidae, rariflorac, scmipcdalis basi exscrtae radiis solitariis, erecto- 



patcntihus, a hasi jam divisis ct supcrne ramosulis; ramificatio- 



nibus intra axillas callosis et glahris; glumis inacqualibus , glabris, 



lanccolatis, apice attcnuatis et acutatis: superiore 7 — 9 lineali 



infcriorcm linca I — l^ exccdcnte; flosculo 3 lineali, apicc arti- 



culato; slipite aristac deciduae vix scmilineali, non torto, cylin- 



drico, intus cavo, exlus glahro; sctis arcuato-divaricafis, omnibu» 



aequaliter a basi usquc ad apicem pcnnatis, V — 6 lincalibu». 



