6 A FLORA OF GIBRALTAR AND THE NEIGHBOURHOOD 



places ; very common ; 4-5. The glabrous form occurs rather 

 frequently. I.! II.! III.! 



S. Irio L. Old walls and waste places ; formerly common, 

 flow rare; 2-6. I. K., D. Eacecourse ! 



[S. Golumncz Jacq. occurs as a casual on the Glacis and near 

 the Cemetery !] 



[S. austriacum Jacq. A casual by Eeclamation Road ! My 

 specimen has long virgate racemes of very spreading pods longer 

 than their pedicels, but usually the pods are suberect and shorter.] 



Nasturtium officinale Scop. Watercourses ; frequent ; 2-6. 

 Large forms are probably var. siifolium Steud. III. ! 



tiV". hisiMiiicwn B. & E. By streams ; locally common ? 3-6. 

 Elowers small, yellow, pods oblong, subinfiated. III. i. Abund- 

 antly by a tributary of the Guadarranque near San Eoque, K. 



Arabis hirsuta Scop. Dry rough places ; rare ; 4-6. III. i. 

 Alcadeza Crags ! 



Gardamine hirsuta L. Eather shady bushy ground; fre- 

 quent; 1-3. I. Mediterranean Steps ! Breakneck Battery! Middle 

 Hill! III.! 



\Succoioia halearica Med. Eocky debris ; locally frequent ; 

 2-4. I. Foot of north, north-east and north-west precipices! 

 Monkey's Cave ! Above Mediterranean Tunnels ! Spur Battery ! 

 At foot of San Eoque, D. 



[Sinapis alba L. is recorded by Kelaart for Gibraltar, doubt- 

 less a casual.] 



[S. arvensis L. Waste and cultivated land ; casual '? 3-6. 

 I. K, D.] 



\Brassica Icevigata Lag. Sandy ground ; rare ; 3-5. Usually 

 with a radical rosette of deeply pinnatifid leaves, with several 

 broad dentate segments ; but my gathering has several narrow 

 elongate subentire stem leaves. Flowers rather large, racemes 

 becoming very lax, with long-beaked pods on long pedicels, valves 

 one-ribbed. III. ii. Lane at Palmones Playazo I 



B. sabularia Brot. Sandy places, chiefly in open woods ; 

 locally common ; 2-5. III. i. Both Pine Woods ! Cork Woods ! 

 ii. Palmones Pinar! 



tVar. lyapillaris Boiss. Perennial ? many-stemmed, with spiny 

 white sette all over, except pods ; leaves less deeply divided, beak 

 conical, 1-2-seeded. I have failed to find this or type in its only 

 station, and fear that alterations have exterminated it. I. Slopes 

 over Catalan Bay, Boiss., D., &c. 



iB. Tournef or tii Gounn. Waste sandy ground ; rare; 3-4. Like 

 last but flowers small, purplish, veined with deeper purple, beak 

 of pods longer, about equal valves. III. i. Sands at foot of Fort 

 San Felipe, D. Fields by shore at foot of San Eoque, D. (A 

 dwarf form at these two stations, Deb.) ii. Heath near Palmones 

 Pinar, 2-3 ft. high ! 



iB. fruticulosa Cyr. Eocky and rough places ; rare ; 3-6. 

 Perennial, with rounded subcrenate leaf lobes. I ? D. ex P. L. Fl. 

 p. 641. Dautez does not record it from the Eock in Debeaux, 



