106 Wheldon : Key to the Harpidioid Hypna. 
f. elata (Ren. et Arnell) Muse. Gallic. Sect. HarpidL, 1894, 
p. 381. 
var . gracile (Boul. Muse. Fr., 63). Dixon, 518. 
f. abbreviata (Ren. in Wheld. ‘ N.' Eng. Harpid.’ The 
Naturalist, 1902, p. 79). 
f. laxifolia (Ren. in Wheld. ‘ N. Eng. Harpid,’ loc. cit. 79). 
var. Payoti (Ren. Muse. Gallic. Sect. Harpid., 1894, 381). 
var. Robertsiae (Ren. et Dixon, Journ. Bot., 1901, 277). Dixon,. 
518. 
var. squalidum (Ren. 'et Dixon, loc. cit.). Dixon, 518. 
var. setiforme (Ren. Muse. Gallic. Sect. Harpid., 1894, 382). 
Dixon, 518. 
var. pseudostraminea (C. Mull, vide Sanio, ‘ Bryol. Fragm. II. f 
Hedwigia, 1887, 129). 
var. submersa (Schimp. Synops. Ed. I., 609). 
var. scotica Wheldon var. nov. 
var. atlantica (Ren., Journ. Bot., 1901, 278). Dixon, 518. 
f. gracilis (Ren. loc. cit.), more slender, 1. smaller, nerve 
slightly narrower. 
f. elongata (Ren. MS.), submersed (10-15 cm - long), leaves 
longer and more distant, erect patent. 
[f. brachythecioides Wheldon, M.E.C. Report, 1907, p. 255. 
Habit of Brachythecium, leaves erect patent, ovate 
shortly acuminate, areolation lax, auricles small and 
indistinct. St. Ishmaels, Pembroke.] 
Sect, (b) falcata — 
var. Delamarei (Ren. et Card. Muse. Gallic. Sect. Harpid., 1894, 
384). 
var. Arnellii (Sanio, ‘ Beschreib. der Harpid.,’ p. 15). Dixon, 
5 * 9 - 
var. procera (Ren. et Arnell Muse. Gallic. Sect. Harpid, 383). 
var. tricolor (Sanio, ‘ Bryol. Fragm. II.’ in Hedwigia, 1887). 
var. falcata (Schimp. Synops. I., 609). Braithw., 50; Dixon, 
519. 
f. alpina (Schimp. Synops. I., 609). 
f. shetlandica (Ren. ined.). 
f. submersa (Monkem.). 
var. ovale (Ren. ex Wheldon, Journ. Bot., 1901, 299, vide The 
Naturalist, 1902, p. 81). 
f . densum Wheldon f . nov. 
var. anglicum (Sanio Hedwigia, 1887, 143). Dixon, 519. 
25. W. exannulata (Giimbel Bry. Eur. 57-61, 1854, 34) Loeske loc. cit. 
310. Braithw., 47 ; Dixon, 520. 
var. pinnata (Boul. Muse. Fr., 62). Dixon, 520.. 
f. acuta (Sanio, ‘ Beschreib. der Harpid,’ 12). Braithw., 48. 
f. gracilescens (Ren. Muse. Gallic. Sect. Harpid., 1894, 385). 
f. versicolor Wheldon f. nov. 
f. montana (Ren. in Wheldon’s ‘ N. Eng. Harpid.’ The 
Naturalist, 1902, 84). 
f. polyclada (Ren. in Wheldon’s ‘ N. Eng. Harpid,’ loc. cit.). 
var. robustus (Roth, et von Bock., ‘ Ubersicht v. europ. Drep./ 
in Hedwigia XLVIII., 153). 
var. lapponicus (Roth. MS. ) ined. ? More slender than the 
preceding, very densely branched, the branches curved, 
pungent and glos&y. Nerve twice as stout. Leaves 
denticulate all round. Abisko, Tornean Lapland. 
Dixon (11) and Nicholson. 
var. tundrae{( Arn.) Jorg. in Christ. Vid. Salsk. Forh, 1894, No. 8) 
Loeske loc. cit. 
Naturalist 
