Botnmque. LASIAGROSTIS. 95 



Macrochloa tenacissima Kunth Revis. Gram. 1. (1829) p. 59. Ejusd. 

 Agrost. syn. p. 179 et suppl. p. 132. tab. 12. fig. 1. 



In coUibus incultis Barbariae denso caespite crescens (Desf. ); Tune- 

 tum (Vahl! in Hb. Schumacher. ) ; Lusitania rai'o v. g. ad promont. St. 

 Vincentii (Link); Hispania: in coilibus aridis circa Malagam (Salzmann!), 

 in aridis regni Granatensis a planitie usque ad altit. 3500 ped. (Bois- 

 sier!), in montibus et collibus sabulosis juxta Aranjuez et Gienpozue- 

 los, copiosissime ad Bugnonam et Chinchon (Loffling 1758); in Attica 

 (Smith). — Hispanis audit: Esparlo (in Arragonia Lygeum spartum sic 

 nuncupatur). Usus hujus frequentissimus per universam Hispaniam ad 

 storeas, ad funes crassiores pro navibus atque corbes et aha utensilia 

 pro transportandis fructibus. (Loffling.) 



Radix subrepens, in uno specimine k pollices descendens, crasse- 

 fibrosa, perennis. Culmus 2 — 3 pedahs, scabriusculus, basi ramosus, 

 ad nodos inferiores plureS;, superiores binos pubescens. Faginae fauce 

 tomentosae, internodiis plerumque longiores. Ligula dense villoso-cilia- 

 ris, brevis, utrinque in subulam capillarem, 2 — k linealem excurrens. 

 Folia filiformia, 8 — l^ pollicaria, glabra;, tenuissima, superiora k — 6 

 pollicai'ia. Panicula lineari-lanceolata, medio lineas 6 — fere pollicem 

 lata, 7 — 11 pollices longa, viridulo-albescens, saepe e spadiceo varia. 

 Axis communis glabriusculus, inferne circiter per interstitia sesquipol- 

 Iicai'ia radios emittens, ibique pilosulus. Radii inaequales, longiores bi- 

 poUicares, scabriusculi. Pedicelli aut brevissimi, aut spicula dimidio bre- 

 viores, dense hispiduli, inferiores saepe barbati. Spiculae 10 lineales, 

 lineari-Ianceolatae. Gluma inferior nonnihil longior, ambae subquinque- 

 nerves, glabrae, submembranaceae. Vahulae glumis demum pauUo fir- 

 miores, stipiti insidentes obconico, basi glabro, dehinc piloso; injerior 

 5 nervis, apice bifida, tota pilosa; arista ad tertiam partem infeme plu- 

 mosa et torta, dein recurva et scabriuscula; valvula superior paullo an- 



