372 



A NEW BRAMBLE. 



Corianclrum sativum L. Two plants on canal bank in the Arsenal 

 five years ago, and not since seen. 



Aspenda arvensis L. A few plants in Plum Lane brickfields. 



Xanthium spinosum L. Two or three plants for two or three 

 years successively at Crossness. They seemed never to flower, and 

 have now, I think, disappeared. 



Ambrosia artemisicefulia L. By canal-lock in Arsenal, a single 

 plant. 



Galimoga parviflora Cav. Entrance to Docks, a single plant. 



Datura Stramonium L. Sporadically here and there, chiefly in 

 the Arsenal. 



Marrubktm vtilgare L. Quite established on an old rubbish-heap 

 in Plumstead Marshes, and once seen in Plum Lane brickfields. 



Chenopodium opulifolium Crantz. Entrance to Docks, Plum 

 Lane and Wickham Lane brickfields, Plumstead Marshes, and in 

 some quantity at Crossness. 



Atriplex hortensis L. Occasionally in Plumstead Marshes. 



Fibichia umbellata Koch. A large patch between entrance to 

 Docks and Beckton Gas Works, now covered up. 



Bromus Schraderi Steudel. Several plants at Crossness. 



Hordeum jvhatum L. Rare and sporadic at Crossness. 



A NEW BRAMBLE. 



By Jamks E. Bagnall, A.L.S. 



Rubus Mercicus, sp. n. — Stem erect- arcuate, branching, 

 roundish below, angular or silicate above, purple, shining, clothed 

 with short scattered clustered or stellate hairs, and here and there a 

 few stalked glands and acicles ; prickles numerous, unequal, not con- 

 fined to the angles, declining or deflexed from a long compressed 

 base, purplish with yellow points ; leaves flat or convex, 3- to 5-nate 



green with 



/< 



ovate or roundish, entire or slightly cordate at the base, cuspidate- 

 acute or shortly acuminate; petiole £ the length of leaflet ; inter- 

 mediate long-stalked, obovate cuspidate-acuminate ; basal shortly 

 stalked, ovate or obovate-acute, coarsely and somewhat doubly 

 dentate-serrate ; petioles and midribs with many hooked prickles, 

 spreading hairs, and occasional acicles and stalked glands : stipules 

 lanceolate, thinly hairy. 



nW l0 T?; Sl ! 00t . , from fuscous 9Cales - an gilar or slightly furrowed 

 SpSS™ a"? "^ »*"■■*¥ hairs, not felted ; prickles short, 



S??v!n 0r -i + fleXed; le , aves ternate; terminal leaflet obovate, 

 niW^n P ? • une< l ual : sided ' ^ntate or slightly lobate-dentate, 



short and' ^ °? ^ ^ beneath ! P anicle la *. ™<&7 



na? with nf r i r ° W1 ? g P? Httle to the rounded t0 P ! ritei axiUar^ 

 of tlX 1,? i y | atent ^ ew " flow ered branches having the pedicles 



b anct, t ^° WerS longer tlian that of th e terminal ; lower 

 branches ascP.nrh™ U3uall sllQrter th subtendill ' leaf; 



