OontrilmlioiiH a lu flon- do lu Tunisie etc. 



27 



Meringurus africanus. — Novum genus, nova spec. (Trib. Hordeeœ, Subtrib. 

 Leplurece). 



(îliaractor gonericiis: Spiculœ in spicaiii simplicem teiiueni (lisposit;u, 

 uiia teriiiinalis, cieterœ ad excavatioiies nicliidis solitaritC oi(]uc arcte adpresste, 

 sessiles, alternse, 1— 2-florœ. (iluina inferior tota oartilagiiiea, spiculaî termiiialis in 

 aristam ei subœquilongain [)roducta, lateraiium mutica, in iinea mediaiia diagram- 

 matis sita, margiiiilms non induplicata, sed altero margiue glumani superiorem, 

 altero rachidem aniploclens. CJlunia superior cartilaginea, spicuite termiiialis in 

 aristam longam producta, lateraiium mutica, transversaliter 

 sita. Flores latere rachidem spectautes; in quaque spi- 

 cula laterali unus solus fertilis, sessilis, secundus (dum 

 adsit) rachillœ brevi complanatie hirtellœ insidens; in spi- 

 cida termiuali tlos unicus, rachillte brevi hirtellse superpo- 

 situs. Glumella inferior chartacea, in spicula termiuali in 

 aristam longam excurreus, in lateralibus mutica vel mu- 

 cronulata, dorso superue carinata. Glumella superior item 

 chartacea, nervis duobus validis, apicem versus arcuato- 

 comiivontibus percursa. Lodiculœ insequaliter bilobae, ob- 

 tusie, margine superiore ciliis longis barbatse. Stamina 3. 

 Stigmata 2. Ovarium oblongum, glabrum. Caryopsis 

 ignota. — Herba anuua, habitu Lepturo filiformi gracili 

 similis. — Icou. : Fig. 8 pag. 28 & tab. nostra XV. 



Annuus. Oulmus simplex, erectus, cire. 13 cm. altus 

 lie vis, gracillimus, 4-uodis. Foliorum lamina plana, 2 — 3 

 cm. longa, 1 — 1,5 mm. lata, apicem versus sensim atte- 

 uuata, acuta, nervis 5 — 7 percursa, margine et in utraque 

 pagina pilis longis albis patentibus obsita et aculeolis mi- 

 nutissiniis scabriuscula ; ligula truncata, brevissima (cire. 

 0,8 mm. longa); vaginœ angustîe, intimis exceptis quam 

 internodia cire, duplo breviores, médise in margine 

 tegente pilis longis albis sat dense ciliatœ, cseterum 

 omnes glaberrimœ ac lœvissimae. SpiculîB in spicam Merhigm-us africanus Mvbb. 



,. , . . , . A» 



tenuem, rectam, cyhndricam, cire, sextam partem longitu- 



dinis culmi occupautetn dispositœ, in s))eeiniine hue usque cognito 3, quarum una 

 termiiialis, cœterse ad nodos rachidis solitariœ et in ejus excavationibus impressai, 

 alternas, sessiles. Spicula in fi ma (rudimentaris) : gluma inferior in Iinea me- 

 diaua diagrammatis sita, auguste linearis, plana, 1-nervis, mutica, 3,5 mm. longa, 

 apice scabriuscula ; gluma superior transversaliter sita, naviculari-lanceolata, dorso 

 subcarinato scabrida, acuta, mutica, 3 mm. longa; glumella inferior glumaj supe- 

 riori opposita eique conformis et sequilonga, cartilaginea, scabrida; glumella supe- 

 rior binervis, l,i mm. longa, apice argute bidentata. Spicula média: gluma 

 inferior medianiter sita, oblonga, brunnea, tota (etiam margine) cartilaginea, 7-uer- 



Fig. 7. 



