D. H.)

46. Myosotis collina (Hoffim.), _var._ Mittenii (Baker). Sussex.

47. Veronica officinalis (L.), _var._ hirsuta (Hopk.). Ayr, Scotland.

48. Veronica arvensis (L.), _var._ eximia (Towns.). Hampshire.

49. Mentha alopecuroides (Hull). Nearest to _M. dulcissima_ (Dum.).

50. Mentha pratensis (Sole). Only once found.

51. Chenopodium rubrum (L.), _var._ pseudobotryoides (H. C. Watson).

52. Salix ferruginea (Forbes). England, Scotland. "Probably a hybrid
between _S. viminalis_ and _S. cinerea_." (J. D. H.)

53. Salix Grahami (Borr.). Sutherland, Perth. "A hybrid?" (J. D. H.)

54. Salix Sadleri (Syme). Aberdeen. "A hybrid?" (J. D. H.)

55. *Spiranthes Romanzoviana (Cham.). Ireland (N. America).

56. *Sisyrinchium angustifolium (Mill.). Ireland. (Arctic and Temp. N.
America.)

57. Allium Babingtonii (Borrer). West England, West Ireland. "A form of
_A. ampeloprasum_, itself a naturalised species." (J. D. H.)

58. *POTAMOGETON LANCEOLATUS (Sm.). Anglesea, Cambridgeshire, Ireland.
Mr. Bennett writes:--"Endemic! I have taken a good amount of trouble to
ascertain this. Nearly 400 specimens I have distributed all over the
world with requests for information as to anything like it. The
response is everywhere the same, 'nothing.' The nearest to it occurs in
the Duchy of Lauenberg but is referable to _P. heterophyllus_."

59. Potamogeton Griffithii (Ar. Bennett). Carnarvon. "Nearest to this
is a probable hybrid from N. America, but not identical." (Ar.
Bennett.)

60. Potamogeton pusillus (L.), _sub-sp._ Sturrockii (Ar. Benn.). Perth.

61. Potamogeton pusillus (L.), _var._ rigidus (Ar. Benn.). Orkneys,
Shetlands.

62. Ruppia rostellata (Koch.), _var._ nana (Bosw.). Orkneys.

63. *Eriocaulon septangulare (With.). Hebrides, Ireland. N. America.

64. Scirpus uniglumis (Link), _var._ Watsoni (Bab.). Scotland, England.
"This is a variety of a sub-species of the common _S. palustris_."
(J. D. H.)

65. Luzula pilosa (Willd.), _var._ Borreri (Bromf).

66. *Carex involuta (Bab.). Cheshire. "A distinct enough plant but
probably a hybrid between _C. vesicaria_ and _C. ampullacea_, found in
one place only." (J. D. H.)

67. Carex glauca (Murr.), _var._ stictocarpa (Sm.). Scotland.

{363} 68. Carex precox (Jacq.), _var._ capitata (Ar. Benn.). Ireland.
"A remarkab