Mitteilungen aus dem botanischen Museum der Universität Zürick 



(XXXVI). 



1. Beiträge zur Kenntnis der afrikanischen Flora (XX). 



(Neue Folge.) 



Herausgegeben von Hans Schinz (Zürich). 



Mit Beiträgen von 

 E. Ilaekel (Attensee). Alfred Cogniaux (Nivelles). Hans Schinz (Zürich). 



Gramineae. 



E. Hackel (Attensee). 



Ischaenium Jtinodii Hack. nov. spec. 



Culmus erectus plus 80 cm altus (incompletus exstat), teres, infra 

 nodos et paniculam appresse pubescens, circ, 6 — nodus, simplex, fere 

 ad apicem usque foliatus. Vaginae internodia superantes, teretes^ 

 appresse pubescentes, nodis pilosulis, ore longius barbatae. Ligula 

 brevissima, membranacea, truncata, ciliolata, intus pilis stipata. Lami- 

 nae ex angustata basi lineari-lanceolatae , acutae, circ. 20 cm lg., 

 10 — 15 mm lt., planae, rigidulae, subtus appresse pilosae, supra glabrae 

 V. pilis adspersae, marginibus scabrae, tenuinerves. Racemi in apice 

 culmi 3 — ^, in rbacheos communis vix 1 cm longae nodis solitarii v. 

 bini, sessiles, subaequales, 8 — 10 cm longi, circ. 4 — 5 mm lati, patentes, 

 subflexuosi, livide purpurascentes. Rhacheos subtenacis articuli spicula 

 sessili duplo breviores, crassiusculi (0,6 mm lt.), obtuse trigoni, basi 

 rectilinei, ciliati, ciliis exterioribus et superioribus articulum sjibae- 

 quantibus. Spiculae sessiles cum callo 15 mm longo semicylindracea 

 obtuso basi breviter barbato 6 mm longae, oblongae: gluma I. in 

 Vs inferiore chartacea, brunnescens, glabra, scabra, in medio herbacea 

 viridis, pilis longiusculis appressis obsita, in \'3 superiore utrinque ala 

 membranacea latiuscula glabra purpurascente instructa, apice bidentata, 

 marginibus anguste inflexa, 9-nervis, nervis prominulis subpercurren- 

 tibus; IL P™ aequans, ovato-lanceolata, subulato-acuminata, carina 

 superne scabra, medio parce pilosa, 5-nervis, chartaceo-membranaceo; 

 III. quam I paullo brevior, elliptica acuta, membranacea, hyalino-alata, 

 ciliolata, 1 -nervis, ejus palea lanceolata, acuta, 2-nervis, floris <S 

 antherae 2 mm longae. Gluma IV. quam IL 7^ brevior, in Vs superiore 

 bifida, laciniis lineari-deltoideis acutis ciliolatis, inferne 3-nervis, e sinu^ 

 aristam emittens circ. 10 mm longam perfectam, cujus columna subu- 



