Rubus cornubiensis (Rogers ex Riddelsd.) Rilstone
Rhamnifolii (Bab.) Focke in Edees & Newton 89 (1988)
Discolores (P.J. Müller) Focke in Kurtto et al. (2010)
Kent No. 075/08.03.097
cornubiensis = ‘of Cornwall’, Francis Rilstone, himself Cornish, having recognised it as a common species in Cornwall.
Synonyms and Superseded Names
R. nemoralis P.J. Müller forma
W.M. Rogers in Journal of Botany 47: 174 (1909)
R. nemoralis P.J. Müller var. cornubiensis W.M. Rogers & Riddelsd.
Journal of Botany 63: 14 (1925)
R. bifrons Vest
A much-branched low bush, subevergreen. Stem stout, dull, red-brown, glabrescent, obtuse-angled with flat striate sides; prickles subulate. Leaflets 3-5, deep green, glabrous above, all long-stalked, green and shortly hairy to closely chalky white felted beneath, finely serrate-dentate, jagged; terminal leaflet roundish or broad with a rather truncate base and sometimes truncate apex, shortly acuminate or cuspidate, or oblong-acuminate. Panicle not leafy,± long, moderately broad, equal, or slightly narrowed to the rounded apex, densely and shortly hairy above, felted below; the lower rachis prickles long subulate or a few bent, the upper ones and th0se on the branches acicular. Sepals felted and pubescent, gland-dotted, aculeolate; petals deep or pale pink, very broad ovate-cuneate, margin crisped; filaments white or pinkish, long; styles greenish or reddish. Carpels thinly pilose. Fruit moderate, shining. On the stem, and especially on the panicle, a few minute shortly stalked glands and sometimes a few acicles may be found.
Watson, W.C.R. 101 (1958)
J. Linn. Soc., Bot. 53: 413 (1950)
1 Inflorescence cylindrical at top but also pyramidal lower down. In West Cornwall all over old heathlands and around old mines. Grows with R. newbouldianus and R. prolongatus with, not far away, R. riddelsdellii. From a telephone conversation with Len Margetts, 2008.
2 Gould considers his R. ‘Looe Island’ is like this but with white petals.
3 Rubus rhamnifolius Weihe & Nees was recorded for R. cornubiensis in Davey (1909). Rilstone (1952).