*1: Wet heath,
Goonhavern Moor, near Perranporth, 1965, JAP
(BBSUK) (Crundwell 1968: 631,
Paton 1969a: 711).
[Vc2 record from Roche in Tellam (1888) is
dismissed by Paton 1969a: 711 because no specimen was
located].
Although this var. was recognised as a separate
taxon by Smith (1978: 93-94) and Blockeel & Long (1998:
69), it was not recognised by Hill et al. (2008: 66,
145), following Hyvonen & Bell in Hill et al. (2006).
However, no detailed analysis of the reasons for merging them
has been published and, contrary to the treatment in Hill et al. (2008), the
name humile would
have priority over that of perigoniale if they
are regarded as synonyms. P. c. var. humile is therefore
retained as a separate taxon here pending further
information.
The only recent record attributed to var. humile is from S. of
Georgia (vc1): on partly bare clayey and rocky soil near base
of 'hill'of quarry spoil, unshaded [accompanied by plants
thought at the time to be intermediate with var. commune;
DTH]. Capsules were present: immature
4.
A non-fertile gathering of small plants of P. commune from drier
than usual, disturbed habitat are referable to this variety or
possibly var.
perigoniale; they have apical cells of lamellae variously
rounded to grooved when viewed in section (in small quantity
on gravelly soil in heathy area by path above old quarry, Carn
Marth; DTH).