Var. /?. Homomalla. T h e d e n .
Stems short, laxly pulvinate, olivaceous, green above, fuscous below.
Leaves ovate or oblongo-lanceolate, more or less falcato-secund, obtuse.
S y n .— -tn i f r . rupestris W e b . & M o h r , S m it h , H o o k ., C. M u e l l . e t p lu r . a u c t . c it . su b fo rm a
t y p ic a .
Andr. petrophila Var. y . homomalla T h e d e n . in Nya. Bot. Not. 1849, p. 79, fig. 48-54*
S c h im p . Syn. Muse. 661, et 2 ed. 813. Z e t t e r s t . Mon. Andr. Scand. 43.
H a b— Glen Callater, Braemar {Hunt) ! ! Castel-y-Gwynt, Carnarvon at 3000 ft. {Beckett
1880) ! !
This appears to be a form rather than a variety, as the secund disposition
of the foliage is found more or less developed in varieties differing
widely in other respects. The obtuse, obliquate apex of the leaf and large
size of the upper cells may prove more characteristic. It seems to be only
sjparingly distributed both here and on the continent.
Var. y. Acuminata. S ch im p .
Plants more robust, olive green or blackish. Leaves spreading, longer
and more acuminate, with longer papillae.
S y n . A. petrophila Var. ¡3. acuminata S ch im p . B. E. vi, Mon. 13, t. II, f i Synops. Muse.
661, et 2 ed. 813.
H a b .— R o c k s o n t h e h i g h e r m o u n t a in s .
Abergynalwyn {Whitehead 1879) ! !
Closely allied to the varieties robusta, flaccida and sylvicola, and perhaps
with them only constituting one good variety characterized by the taper-
pointed leaves.
Var. S. Flaccida. S c h im p .
In soft, black tufts, with branched, flexuose stems. Leaves squarroso-
patent, lanceolate, pointed, rather obtuse.
S y n .- y 1, petrophila Var. y. flaccida S c h im p . B. E. vi, Mon. 13,1. II, 7 1 S y n . Muse. 661, et
2 ed. 813.
H a b .— Rocks in Glen Callater, Braemar {Hunt 1871) ! ! Canlochan {Hunt 1868) ! !
This is a more robust plant than the Var. aipestris, which it somewhat
resembles in the form and direction of the leaves, but these in the dry state
are widely divergent or even subsquarrose, and also of a larger size.
Var. e. Sylvicola. S c h im p .
In small, lax tufts, short, slender, decumbent at base. Lea ves small,
partly secund, rather distant, longly lanceolato-acuminate, acute.
S,m.— A.petrophilaVm.i- sylvicola S c h im p . B . E. vi. Mon. 1 3 , 1 . II, «I Syn. Muse. 6 6 1 , et
2 ed. 813.
H a b .— Ben Macdhui, Glen Callater and Loch Kandor {Hunt 18 7 1 ) ! !
Var. C Gracilis. S c h im p .
Stems slender, branched, rufescent; surculi straight, elongated ; leaves
more distant, suberect, broadly oblongo-lanceolate; penchietmm narrow,
cylindric.
SVN.-Zl. petrophila Var, t gracUs S c h im p . B. E, vi, Mon. 13, t. II. Cl Syn. Muse. 661; et
2 ed. 813.
H a b .— Elevated mountain districts.
T, A..}.:. iTJontf t8'7i1 ' ' Cader Idris {Pearson 1874) ! ! Loch-na-Gar,
®‘g : a r a r T s 1 » X ? r i “ B M ( ^ ^ - 4 -879) 1 1
Two forms of this variety occur, one rufous brown, to which the
Braemar plant belongs, the other, more slender and of a beautiful rosy
purple tint, represented by Mr. George’s specimens The first is identical
with Stockholm specimens from Lindberg, and readily distinguished by its
straight branches and suberect leaves.
Var. q. Aipestris. T h e d e n .
In densely cushioned black-brown tufts. Stems very slender, much
branched. Leaves small, crowded, closely imbricated when dry, obtuse,
laxly areolate, less distinctly papillose.
S'lH.— And. petrophila Var. aipestris T h e d . in Nya Bot. Not 1849, p. 79, fig- 45-47- H a r tm .
Skand. F I , 6 ed. 4 37. Z e t t e r s t . Mon. Andr, Scand. 43.
Andr. alpina De N o t . Syll. Muse. p.p.
Andr. aipestris S c h im p . Bry. Eur. v i, Mon. 16 , T . IV., Syn. Muse. Eur. 662 ; e t 2 ed. 814.
D e N o t . Epil. Briol. Ital. 747. H a r t m . Skand. FI. 7 ed. H o b k . Syn. Br. M. 21.
H a b . Wet rocks on the higher mountains of Scotland ; rare.
Glen Callater, Braemar {Croall 1853) ! ! Morone, Braemar {iLmi 1871) ! ! Ben Challum,
Perthshire (McKinlay 1866) ! ! Uam Mhor, Perthshire {McKmlay 1865) !
This variety appears to stand midway between A . petrophila and
A . obovata, but agrees entirely with the first in the form and areolation of the
leaf, though differing remarkably in aspect, by its very slender, branching
stems, and smaller, closely imbricated leaves. None of our specimens come
quite up to the standard of the Scandinavian plant, being thicker and more
stunted and thus as it were intermediate between ordinary A . petrophila nnA
the type of the variety ; this is especially the case with the Perthshire
specimens.
Var. Sparsifolia. ( Z e t t .) L i n d b .
In small, lax tufts; olivaceous or rufescent; stems very slender and
fragile, flexuose. with few branches. Lea ves small, distant, spreading, the
uppermost secund or subfalcate, lanceolate, gradually acuminate, acute, less
distinctly papillose.
S y n .— A ; irfr. sparsifolia Z e t t e r s t . Mon. Andr. Scand. 32. S c h im p . Synops. 665 ; et 2 ed. 8 17 .
De N o t . Epil. Briol. ital. 746. H a r tm . Sk. FI.
H a b .— Near the summits of the higher mountains. Very rare.
Summit of Ben Move, Perthshire {George 1875).