16 COLONEL MUNRO'S MONOGRAPH OF THE BAMUUSACE.E. 



fig. 1 a, j8, 7, 8 ; Chapman, /. c. 561 ; Steudel, /. c. 334. A. macrosperma, var., Noes, Kuntli, A. Gray, 

 /. c. P. de B. Agrost. p. 144, tab. xxv. fig. 7. Arundo tecta, Muclil. /. c. 81. M'wgia macrosperma, 

 Nutt. Gen. 39. M'wgia pumila, Nutt. fide Ruprecht, /. c. et herb. Ludolfia tecta, Dietr. /. c. Tri- 

 glossum bumbusitmm, Fiseh. /. r. 



Hah. America sept., freciucns. Vidi spccimina e Philadelphia ! ; Florida !, Chapman ; Kentucky !, Short, 

 Carey; New Orleans, Drummond, 474!, Elliott; Texas! Lindheimer; Georgia!, Arkansas! Nuttull, 

 Elliott, Schweinitz ; Carolina ! Frazer. In Europa culta. 



Culmus arborcsccns vel sufrruticosus, nodis plerumquc hirsutis, in var. a ramis 3-4-pe(lalibus. Folia lance- 

 olata basi rotundata in pctiolum attennata, ncrvis secundariis 6-14; venulis transversis crebris, 

 4 lin.-^ i)oll. lata, 3-7 poll, longa, raarginihus scrratis, nndique scabra, dorso pubesccntia. Vagina 

 intcrnodiis breviores, superiorcs snbseraipcdulcs, striatic, sulcatse, ore ligulatre et a])pcndieulato-fim- 

 briatic, imo margine longe oiliatai, ligula truneata hyalina lacero-ciliata, fimbriis rigidis 1-3-linea- 

 ribus scabris deciduis. Fanicula subraccmo.sa, pauciflora, spiculis 1-5, vel in cubno solitaria vcl in 

 ramulis plurimis, quasi paniculatis, ad nodos fascieulatis, terminalis. Spicules eompressae, lineari- 

 lanceolatJE, 10 lin.-3 poll, longa;, 5-8-15-florae, ssepe dense pubescentes, raro subglabrae, semper 

 margine plus minus hirsutse raembranacese nervosae. Glumee valde variabiles, inferior 1 J-3-lin. longa, 

 acuta vel obtusa, interdum dcficiens, superior 3-8 lin. longa, flosculum proximum vel subajquans 

 vel duplo et etiam 3-plo brevior. Palea inferior, 9-11-nervia, lanceolata, acuminata, margine longe 

 fimbriata, transverse vcnulosa, supci'iore apice bimxxcronata pauIo longior. SipiamuUe insequales, 

 lanceolatic, basi colorata;, venosie, mai-gine ciliatfe vel fere glabrae. Ovarium apice atteuuatum in 

 stylimi, basi integrum, cito in stigmata 3 divisum. Canjopsis oblonga. 



This grass certainly varies very much in form ; and there is a very great difference in 

 the appearance of the small purplish-coloured nearly glabrous spiculne of the variety called 

 " colorala" by Ruprecht, compared with the large pale-coloured densely pubescent spicuhe, 

 nearly 2 inches long, generally found in dwarf specimens, terminated by a single panicle. 

 Intermediate forms, however, abound; and I quite coincide with Pursh, Nuttall, and 

 A. Gray in considering that all these forms belong to one and the same species. This 

 variation in form will to a certain extent account for the fact that this one species bears 

 no less than nine different generic and nineteen specific names. I have already referred 

 to the needless alterations that have been made in the generic name. Carey mentions 

 that this grass, which was once common in Kentucky, has become now nearly extinct 

 there. 



2. A. RADiATA, Ruprecht, /. c. 11.5, tab. xv. fig. 9. Culmi nodis glabris, foliis tessellatis, 

 vaginis fimbriatis pubcscentibus, panicula spithamaca radiis solitariis longissimis 

 monostachyis, gluma superiore flosculo infimo plane simili, Steud. /. c. 335. 



Hah. In sylvis umbrosis BrasiliiE, Riedel, s. v., Ruprecht. 



" Culmus erectus ramis ad nodos glabris ramulos simpliccs foliifcros apice florifcros cmittentibus. Folia 

 lanceolata, maxima 4 lin. lata, 5 poll, longa, basi rotundata, subsessilia, heviuscula, viridia, uervis 

 secundariis subobsoletis, utroque latere 5-6, venulis transversis valde pcllucidis infernc promincntibus 

 distantibus. Vagivcs pubescentes sulcato-striatse, ore fimbriatje, fimbriis 2-linealibus. Panicula 

 (juba) spithama;a, radiis solitariis longissimis erectis monostachyis. Spicule sub 7-lineales, tcreti- 

 linearcs, subglabrie, 4-5-florfc. Gluma superior flosculo infimo plane similis. Flosculi brevissime 

 pedicellati, subglabri. Palea inferior lincari-obovata, apice longe mucronata vol subulata, 5-ner\-ia; 

 superior minima, hebetata, nonnisi in flosculis 2do, 3tio, ct 4to iuventa." 



