DR. STIRTON’s BRITISH MOSSES 
49 
G. platypliylla Stirt. in Scott. Nat. No. xxvii. p. 219 (1890). 
(Near Callender; 1865.)— A rather marked form of the very variable 
G. apocarpa , having very wide, short leaves, and a long liair-point, 
almost equalling the length of the leaf. 
G. polita Stirt. in Ann. Sc. N. H. xvi. 172 (1907). (Arisaig ; 
July 1904.)—The author says it is allied to G. trichophylla, but 
quite distinct; he fails, however, to point out any distinguishing- 
characters. It is G. trichophylla forma propagulifera Limpr. (which 
is not G. subsquarrosa , as Limpricht states, by the way). 
G. rubescens Stirt. in Scott. Bot. Rev. i. 90 (1912). (Gairloch, 
Ross-shire; Sept. 1911.)—Stirton does not compare this with any 
species. It is only G. trichophylla . 
G. subaquila Stirt. in Ann. Sc. N. H. xviii. 243 (1909). (Loch- 
nam-Uamh, near Arisaig ; Sept. 1908.)—This is simply G. decipiens. 
G. sublurida Stirt. in Scott. Nat. ix. 36 (1887). (Tarbert in 
Harris ; Aug. 1886.)—A very ordinary form of Bhacomitrium hetero- 
stichum var. gracilescens. Dr. Braithwaite also referred it to this 
species. 
G. undulata Stirt. in Scott. Bot. Rev. i. 91 (1912). (Gairloch, 
Ross-shire; Aug. 1911.)—This is one of the frequent forms of 
G. trichophylla , showing an approach to G. subsquarrosa in the 
basal areolation. 
Bhacomitrium consocians Stirt. in Ann. Sc. N. H. xvi. 179 
(1907). (Glen Lochay; D. Haggart; 1903.)—This is the hairless 
form of Bhac. canescens, which 1 take to be a form rather than a 
stable variety. 
It. divergens Stirt. in Ann. Sc. N. H. xvi. 179 (1907). (Type, 
Onicli; Sept. 1909.)—As the description would suggest, this is 
B. ramulosum , the more robust form with wide hair-points, to which 
I have referred in the ‘ Handbook.’ It. ramulosum has been looked 
upon as a rare moss in Scotland, but Stirton has it from several 
localities in Ross-shire, &c. 
It. lieterostichum var. amblyphyllum Stirt. in Ann. Sc. N. H. xi. 
112 (1902). (Near Killin.)—This is the var. alopecurum with 
rather broad apices to the leaves, and hair-points. 
Tortulacejs. 
Didymodon turgescens Stirt. in Scott. Nat. No. xv. 35 (1887). 
(Ben Lawers; July 1886.)—Stirton has written across the label of 
this “ —Zygodon lapponicus ,” which the moss undoubted^ is. 
leptodontium Bossii Stirt. in Trans. & Proc. Bot. Soc. Edinb. 
xxvi. 424 (1915). (Blairmore on the Clyde; Oct. 1914; L. W. 
Stirton.)—A very fine, tall, robust, sterile form of Bhabdoweisia 
crenulata Jameson. I have not seen it so robust from Britain, but 
I have gathered a very similar form in the Pyrenees. 
Barbula aggregcita Stirt. in Ann. Sc. N. H. vi. 120 (1897). 
(J lollia aggregata Stirt. in Ann. Sc. N. H. xix. 171 (1909).) (Tar¬ 
bert in Harris'; July 1886.)—Stirton later considered that this might 
belong to B. fragilis (Trichostomum fragile ), and reduced it to a 
form of that; I should certainly refer it to that species. 
Journal oe Botany.—Vol. 61. [February, 1923.] 
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