le plant (monstrosity?) simulating _C. capitata_ (L.)." (Ar.
Bennett.)

69. *Carex Grahami (Boott). "A mountain form of _C. vesicaria_."
(J. D. H.)

70. *Spartina Townsendi (Groves). Hampshire. "A distinct but very local
form of _S. stricta_, found in one place only." (J. D. H.)

71. Agrostis nigra (With.).

72. Deschampsia flexuosa (Trin.), _var._ Voirlichensis (J. C. Melvill).
Perth.

73. *Deyeuxia neglecta (Kunth), _var._ Hookeri (Syme). Ireland. "A
distinct variety confined to Lough Neagh." (J. D. H.)

74. Glyceria maritima (Willd.), _var._ riparia (Towns.). Hampshire.

75. Poa Balfouri (Bab.). Scotland. "An alpine sub-variety of a variety
of the protean _P. nemoralis_." (J. D. H.)

In his comments on this extensive list of supposed peculiar British plants,
Sir Joseph Hooker arrives at the following conclusions:--

1. There are four unquestionably distinct species which do not occur in
continental Europe: viz.--

_One_ absolutely endemic species, POTAMOGETON LANCEOLATUS.

_Three_ American species, SISYRINCHIUM ANGUSTIFOLIUM, SPIRANTHES
ROMANZOVIANA, ERIOCAULON SEPTANGULARE.

2. There are sixteen endemic varieties of British species, viz.--

_Eleven_ of more or less variable species, Caltha palustris, _var._
RADICANS; Polygala vulgaris, _var._ GRANDIFLORA; Cerastium arcticum,
_var._ EDMONSTONII; Trifolium repens, _var._ TOWNSENDII; Rosa involuta,
_var._ WILSONI; Rubus fruticosus, _sub-sp._ LONGITHYRSIGER; Campanula
rotundifolia, _var._ SPECIOSA; Erythraea centaurium, _sub-sp._
LATIFOLIA; Carex involuta, (? Hyb.); Carex vesicaria, _var._ GRAHAMI;
Deyeuxia neglecta, _var._ HOOKERI.

_Five_ of comparatively well limited species. Arabis petraea, _var._
GRANDIFOLIA; Helianthemum guttatum, _var._ BREWERI; Geranium
sanguineum, _var._ LANCASTRIENSE; Oenanthe Phellandrium, _var._
FLUVIATILIS; Spartium stricta, _var._ TOWNSENDI.

The above twenty species are marked in the list with an asterisk. Of the
remaining fifty-five, Sir Joseph Hooker says, "that for various reasons it
would not be safe to rely on them as evidence. In most cases the varietal
form is so very trifling a departure from the type that this may be safely
set down to a local cause, and is probably not constant. In others the
plant is doubtfully endemic; in still others a hybrid."

Even should it ultimately prove that of the w