144 H. Schinz: 



longioresve, lineares, pallide virides: gluinae steriles membranaceae, 

 lineares, 1-nerves, carina scabra, inferior 10 mm longa, acuminata, 

 mucronata; superior 12 mm longa, infra apicem bidentulum breviter 

 setigera; gluma florifera cum callo acutissimo 3 mm longa breviter 

 denseque barbato 10 mm longa, linearis , superne glabra scaberula ; 

 aristae caducae stipes gracilis 4 cm longus multispirus scaber, divi- 

 siones aequales subcapillares 6 cm longae. 

 Ex affinitate A. Sieberianae Trin. Rupr, 

 Standort: Omatope, Ondonga Stamm (Amboland). 



Aristida alopecuroides Hack. (Sect. Chaetaria). 



Perennis. Culmi erecti, 40 — 80 cm alti, simplices. Vaginae 

 praeter os barbatum glaberrimae; ligula brevissima, ciliata; laminae 

 lineares, sensim acuminatae, circ. 20 cm longae, basi 2 — 3 mm latae, 

 siccando superne convolutae, glabrae, subtus laeves, supra margineque 

 scaberulae. Panicula elongato-linearis, cylindrica, subspiciformis, den- 

 sissima, circ. 20 cm longa, ramis a basi ramulosis ramulis bre- 

 vissimis ab ipsa basi spiculas crebras ferentibus. Spiculae bre- 

 vissime pedicellatae , pallide virides, sine aristis 7 — 8 mm longae, 

 lineares: glumae steriles inaequales, 1-nerves, carina scaberula: in- 

 ferior 4 mm longa, in setulam ipsa parum breviorem abiens, superior 

 7 mm longa, infra apicis denticulos breviter setigera; gluma florifera 

 cum calio 1 mm longo brevibarbi fere 5 mm longa , linearis, superne 

 tuberculato -scabra, aristae non articulatae stipes 6 mm longus scaber 

 4 — 5-spirus, divisiones subaequales 20—25 mm longae gracillimae, 

 patentes. 



Affinis A. congestae R. et Seh. 



Standort: Olukonda, Ondonga Stamm (Amboland). 



Aristida Hochstetteriana Beck Ms. (Sect. Arthratheruni). 



Differt ab omnibus Arthratheris spiculis subsessilibus in racemum 

 spicam secalinam (si aristas plumosas exemeris) quam fidelissime 

 referentem, gluma sterili inferiore breviter hirsuta. 



Standort: Buschmannsland (leg. Wyley, durch die Novara-Expedi- 

 tion heimgebracht) ; Hereroland, nördlich vom Omuramba und Omaruru 

 (Lüderitz). 



Die ausführliche Beschreibung dieser sehr charakteristischen 

 Art wird Dr. Beck im letzten Teile der Botanik der Novara-Expe- 

 dition geben. Hier seien nur noch folgende Merkmale erwähnt: 

 Perennis; folia glauca, convoluta, scabra, glabra; spica 5— 6 cm longa; 

 glumae steriles subaequales, 15 — 16 mm longae, longe acuminatae, 

 florifera 7 mm longa barbata, supra medium articulatim rumpens; 

 aristae stipes 9 mm longus, divisio media 6 — 7 mm longa in \ 4 inferiore 

 nuda, dein plumosa, apice glabra, laterales 2,5 cm longae, capillares, 

 glabrae. 



