112 A FLORA OF GIBRALTAR AND THE NEIGHBOURHOOD 



and short slender spikes. III. i. S. Carbonera, D. ii. North of 

 El Cobre ! 



Crypsis aculeata Ait. Dry beds of pools ; locally frequent ? 

 6-8. Heads hemispherical or shortly oblong. III. iii. Excava- 

 tions by railway ! 



Heleochloa {Crypsis) schomoides Host. Similar places ; rare ; 

 6-8. Heads oblong or cylindrical. III. iii. Eoadside excavation, 

 Guadacorte ! 



Tragus racemosus Scop. Sandy and cultivated fields ; rare ; 

 4-6. III. i. Near Gibraltar, Cabrera, Clem. 



Digitaria sancjuinalis Scop. Cultivated soil; rare; 6. III. iii. 

 Garden at Salt Pans ! 



■'•Paspalum Digitaria Poir. Sandy shores ; rare ; 6. II. West 

 shore ! 



Setaria verticillata P. de B. Cultivated soil ; rare ; 6-9. 

 Awns with deflexed scabridity, setae two. I. Alameda Gardens ! 

 and elsewhere, D. III. ii. Eoadside near Algeciras Casino ! 



S. viridis P. de B. Similar places ; rare ; 6-7. Awns with erect 

 scabridity, setae several. III. i. Cultivated ground at San Roque, D. 



Panicum repens L. Sandy ground; rather common; 5-11. 

 I. North Front ! II. ! III. ! A dwarf form, almost covered with 

 sand, occurs in patches in sand dunes north of Linea ! 



Echinochloa Crus-Galli P. de B. Cultivated ground ; frequent ; 

 5-9. III. i. and ii. ! iii. ? 



Andropogon distachyum L. Bushy ravines ; rare ; 4-9. 

 III. i. Queen of Spain's Chair! Majaram bout Crags! Alcadeza 

 Ravine 1 ii. S. de Saladillo, P. L. 



Cymhopogon [Andropogon) Mrtus Stapf. Dry fields; abundant 

 in Spain ; 1-12, but chiefly 4-6. I. ! III. ! 



Var. longiaristatus Wk. with awns 1 in. long or more, and 

 sheaths glabrous below panicle, is as common as type ! 



tVar. podotrichus Hack, with spikelets longly villous above, 

 the hairs on tubercles. III. ii. Algeciras, Rev. 



\Clirysopogon Gryllus Trin. Dry places; rare; 6-7. Super- 

 ficially like last, but spikelets ternate on many long slender 

 branches from each node, in a denser panicle. I. K. III. i. 

 Near Gibraltar, Von Martins. 



Sorghum halepense Pers. Cultivated ground ; occasional ; 6-9. 

 A stout broad-leaved species, with lax pyramidal panicle of sub- 

 spiciform branches, leaflets with a broad white midrib. III. i. 

 In maize fields by the Lajo ! Railway near Second Venta ! 

 ii. About Algeciras aqueduct! iii. Gardens at Salt Pans ! 



hnperata cylindrica Pers. Grassy places ; very local ; 5-7. 

 Panicle narrow, spiciform, becoming very white-silky. III. iii. 

 Guadacorte Marsh ! 



Cynodon Dactylon Pers. Sandy grassy places ; very common 

 in Spain, less so on the Rock; 1-12, but chiefly 5-9. I. Scattered 

 about lower levels ! II. West shore ! III. ! 



Spartina stricta Roth. Muddy salt marshes ; local ; 6-9. 

 III. Near San Roque, Massonl Probably same station as next. 

 ii. and iii. Guadarranque Marshes, both sides of river 1 



