J. B.  Marshall, ?A note on Conyza sumatrensis (Retz.) E. Walker (C. floribunda Kunth).?, Watsonia, vol. 10, pp. 166 - 167, 1974.

A. C.  Leslie, ?Dipsacus Strigosus Willd. In Cambridgeshire, V.C. 29.?, Watsonia, vol. 11, no. 1, pp. 67 - 68, 1976.

A. C.  Leslie, ?Further records of Dipsacus strigosus Willd. in Cambridgeshire?, Watsonia, vol. 13, pp. 126 - 128, 1980.

B.  Wurzell, ?Conyza sumatrensis (Retz.) E. Walker established in England?, Watsonia, vol. 17, pp. 145 - 148, 1988.

C. G.  Hanson and Mason, J. L., ?Bird seed aliens in Britain?, Watsonia, vol. 15, pp. 237 - 252, 1985.

C. M.  James, Wurzell, B. S., and Stace, C. A., ?A new hybrid between a European and a Chinese species of Artemisia (Asteraceae)?, Watsonia, vol. 23, pp. 139 - 147, 2000.

D.  McClintock and Marshall, J. B., ?On Conyza sumatrensis (Retz.) E. Walker and certain hybrids in the genus?, Watsonia, vol. 17, pp. 172 - 173, 1988.

D. J.  Mabberley, ?The dusty miller's tale or Senecio cineraria DC. restored?, Watsonia, vol. 14, no. 3, pp. 279 - 280, 1983.

J. B.  Marshall, ?Conyza-taxa found in Britain?, Watsonia, vol. 9, pp. 372 - 373, 1973.

J. K.  Morton, ?Studies on Ononis in Britain?, Watsonia, vol. 3, pp. 307 - 316, 1956.

J. P.  Murphy, ?Senecio x albescens Burbidge & Colgan at Killiney, Co. Dublin: a seventy-eight years old population?, Watsonia, vol. 13, pp. 303 - 311, 1981.

J. P. M.  Brenan, ?Artemisia verlotorum Lamotte and its occurrence in Britain?, Watsonia, vol. 1, no. 4, pp. 209 - 223, 1950.

J. P. M.  Brenan, ?Amaranthus in Britain?, Watsonia, vol. 4, no. 6, pp. 261 - 280, 1961.

K.  Hollick and McClintock, D., ?Echinops in Britain?, Watsonia, vol. 11, no. 2, 1976.

L. M.  Spalton, ?A new subspecies of Bromus hordeaceus L?, Watsonia, vol. 23, pp. 525 - 531, 2001.

P. M.  Smith, ?The Bromus mollis aggregate in Britain?, Watsonia, vol. 6, no. 6, pp. 327 - 344, 1968.

R. M.  Burton, ?Senecio cineraria DC. x S. erucifolius L?, Watsonia, vol. 12, pp. 333 - 334, 1979.

B.  RM, ?Bidens connata Muhl?, Watsonia, vol. 12, no. 4, pp. 391 - 392, 1979.

T. B.  Ryves, ?Notes on wool-alien species of Lepidium in the British Isles?, Watsonia, vol. 11, pp. 367 - 372, 1977.

T. B.  Ryves, ?Alien species of Eragrostis P. Beauv. in the British Isles?, Watsonia, vol. 13, pp. 111 - 117, 1980.

T. B.  Ryves, ?Artemisia L. species in the British Isles?, Watsonia, vol. 15, pp. 109 - 112, 1984.

U. K.  Duncan, ?Cytisus striatus (Hill) Rothm. in Britain?, Watsonia, vol. 12, no. 1, 1978.

J. P.  Bailey, ?Putative Reynoutria japonica Houtt. x Fallopia baldschuanica (Regel) Holub hybrids discovered in Britain.?, Watsonia, vol. 17, 1988.