KEY TO BRITISH RUBI. 41 
top), and acicles few or none. Sep. reflexed in fr. A puzzling 
collection of forms intermediate between R. dumetorum and R. casius 
a. R. sublustris (Lees). — St. nearly round, more or less striate, 
reddish, 
usually slightly declining from rather a small base. Lts. sharply 
doubly serrate, ashy-felted beneath; term. roundly cordate-acuminate, 
and often more or less 3-lobed. Pan.-rachis nearly straight. A very 
Engl z. 
b. conjungens Bab. R. cyclophyllus Lindeb. ? —- St. rather more 
angular and often stouter, reddish. Prickles less scattered, rather 
short but strong, declining or slightly deflexed from a long base. 
Lts. all usually broader, rounder, and with somewhat seienionarals 
y cor 
not te. Pan. 
rachis nearly straight. Perhaps as common as sublustris and as 
—— eglandular, and connected with it by numerous intermediates. 
. R. fasciculatus P. J. Muell. BR. purpureus Bab. — St. bluntly 
sada, subsulcate above, usually dark purple on the upper side, 
slightly hairy and with a good many scattered shortly stalked glands. 
Prickles many, unequal, slightly declining from a large base. L#s. 
doubly dentate-serrate, usually pale green-felted beneath ; term. 
. uch nearer to A. dumetorum (if indeed it can be 
kept apart from it) than the other two vars. Prof. Babington now 
considers it practically identical with R. Wahlbergii Arrh., while 
Areschoug (Observations on Rubus, 1887) would put the latter nearer 
to sublustris, as (judging from my Scandinavian specimens, as we 
as his description) I should also do. 
ee Blox oundish, with a good ma 
scattered fine hairs (both single ir aueionen ) and a few (datially 
very few) acicles Aad stalked ~—s Prickles few, slender, nearly 
patent from a rather small compressed base. L. 5-nate. Lts. large, 
irregularly and often doubly inane serrate, occasionally lobate, 
green and hairy on both niles; rugose above, paler shores soft beneath ; 
term. usually broadly elliptic or roundish acuminate subcordate. 
Pan, very loose, with long ~ en a few-flowered distant branches and 
a flexuose hairy rachis, having usually a good many unequally scattered 
stalked glands (which seldors exceed the’ hair), an occasional acicle, 
ew very slender patent prickles. Sep. ovate-acumin nate- 
attenuate, hairy and glandular, oe becoming erect. Pet. suborbicular, 
often very large, purplish or white. Fr. black-purple, large, and 
richly flavoured, Stam. etiar’ short, but usually exceeding the 
flesh-coloured styles. Widely but rather ae distributed. 
The ace plant, with its Sem large l., fees and fr., its 
