GRAMINE^E. 529 



flowers ]0'"-12'", awn 8"'-10"' long; stigmas brown, setaceous, often exceeding the awn. — 

 Hab. Trinidad !, Cr., at S. Anns ; [Southern United States, Guiana]. 



Subtribe 2. FESTUCEjE. — Spikelets pedicellate •. no excavation of the axis at the base 



of the pedicels. 



Division I. BROMEJE. — Spikelets usually more than 1-flowered: the uppermost glumes 

 often imperfect. Awn none or straight. Stigmas projecting laterally from the flower. 

 Embryo minute. 



5. ARTHROSTYLIDIUM, Rupr. 



Spikelets laterally compressed, many-flowered : the flowers distant along the jointed rhachis, 

 with the joints at length seceding : glumes inferior 3-4 sterile, the fertile chartaceous- 

 herbaceous, uppermost imperfect. Lodicuhe 3. — Bamboo-like trees or shrubs ; spikelets 

 slender, usually distant in fascicled or terminal racemes. 



(>. A. pubescens, Rupr. Intemodes scabrous ; leaves lanceolate-acuminate, rounded 

 at the petioled base, puberulons above, scabrous at the margin : sheath striate, glabrescent, 

 fimbriate at the summit ; peduncled racemes or flowering branches densely fascicled .- spike- 

 lets distant, shortly pedicellate or subsessile ; glumes lanceolate-acuminate, obsoletely nerved, 

 about twice as long as the internodes of the rhachis. — Rupr. Bambus.f 14 : analyt. — 

 Leaves 4"-5" long, 4'"-'.)"' broad ; sheath-bristles rusty, 2'" long, deciduous, superior 

 glumes 4'" long ; upper joints of the rhachis caducous. — Hab. Trinidad !, Lockh., Cr., on 

 the summit of the mountains, Tocuche. 



7. A. excelsum. Gr. {n. sp.) Internodes smooth ; leaves lanceolate-acuminate or ob- 

 long-lanceolate, rounded at the petioled base, glabrescent, scabrous at the margin : sheath 

 striate, ronghish between the smooth streaks, fimbriate at the summit ; peduncled racemes 

 fascicled or terminal : spikelets distant, shortly pedicellate ; glumes lanceolate-acuminate, 

 striate-nerved, about twice as long as the internodes of the rhachis, lowest shorter. — Allied 

 to the preceding and to A. cubense, Rupr. Stem 60'-80' high, 6"'-12"' diam. (Pd.) ; leaves 

 3"-5"long, 9"'-3'" broad ; sheath -bristles tawny, 1 '"-4"' long, deciduous; spikelets 6-3- 

 flowered, 12"'-6'" long : superior glumes 4'" long. — Hab. Dominica !, Imr. ; Trinidad, Pd., 

 Cr., Las Cuevas hills, Tocuche. 



6. CHUSQUEA, Kth. , 



Spikelets 1 (-2) -flowered : the flower approximate to the sterile glumes : inferior sterile 

 glumes 3-4 (rarely the 2 lowest abortive), all devoid of a palea, the fertile chartaceous-herba- 

 ceous. Flower of Arthrostylidium. — Scandent or trailing shrubs, rarely erect and bamboo- 

 like ; spikelets paniculate or racemose. 



8. C. abietifolia, Gr. (a. sp.) Leafy branches fascicled ; leaves short, linear-acumi- 

 nate, mucronate-pointed, rigid, serrulate-scabrous at the thickened margin : sheath ciliate 

 with the down at length deciduous , ligule none ; raceme3 short, as Ions: as the leaves, 

 spreading, nearly simple: axis angular, scabrous; spikelets 5-10, lanceolate-acuminate: 

 sterile glumes 3, two inferior about half as long as the third, narrow, the latter equalling the 

 single flower, clasping, 5-nerved, acuminate; fertile glume linear-acuminate, puberulons, 3- 

 nerved, a little shorter than the 2-keeled acuminate palea. — " A high climber " (P. Br. : 

 Arundo, nr. 5.) ; internodes smooth, 3"-5" loug, equalling the leafy branches, the older 2'" 

 diam., those of the branches l'"-3'"(-6"0 long; leaves 1 'Mi" long, 1J '"-2"' broad, subses- 

 sile, glaucesceut : strong midrib prominent beneath, impressed above ; pedicels 1'", spikelets 

 3'" long. — Hab. Jamaica !, Wi.'s. ; [West Indies 1, Swj\. 



7. ARUNDO, L. 



Spikelets 2-6(-l)-flowered : the rhachis bearded with silky hairs : glumes membrana- 

 ceous, the 2 (-3) lowest only devoid of a palea. Palea short. Stigmas naked below, pro- 

 jecting from the flower at its middle or above it. — Herbaceous or arborescent canes, ligular 

 border ciliate ; spikelets in a large panicle. 



