10 



Although smaller in all its parts than Norwegian specimens, for which 

 I am indebted to the kindness of Prof. Lindberg, the Scotch plant is 

 unquestionably the same, and it is equally certain that it must take its place 

 in the long series of forms referable to Andr. petrophila, of which it is the most 

 marked variety, a position we prefer to that of establishing intermediate 

 subspecies. The areolation is also less completely circular than in the Scandi- 

 navian plant, which, it may be mentioned, grows associated with Andr. obovata 

 and Hartmani, two species still desiderata in the British Flora. 



2. A. ALPINA. {Dill.) Sm. 



Autoicous ; tall, erect, in soft, glossy, chocolate brown tufts. 

 Leaves nerveless, spathulato-obovate, subpanduriform, imbricated when 

 dry, abruptly acuminate, with an acute apex, smooth, the margin 

 obtusely denticulate at base ; perichaetial bracts ovate-oblong, convolute. 



Syn. — Lichenastrum alpinum atrornbens teres, calycibtis squavwsis Dillen. Hist. Muse. 506, 

 n. 39, t. 73, f. 39 A-D (1741) ; et herbar. 



yungermamiia alpina L. Sp. Pl.'ii35, n. 22 (1753) ; et 2 ed. ii, 1601, n. 23 (1763), p.p. non 

 herbar. HuDS. Fl. Angl. 436, n. 24 (1762), et 2 ed. ii, 517 (1778). Wither. Bot. Arr. 

 Br. Veg. ii, 6g8, n. 30 (1776). Lightf. Fl. Scot, ii, 787, n. 22 (1777). Laichard. Veg. 

 Eur. ii, 657 (1791). Murray Syst. Veg. 803 (1798). Hull Br. Fl. P. 2, 281 (1799). 

 Dicks. Hort. sice. fasc. 3, n. 23. 



Andreesa alpina Smith Fl. Brit. 1179, excl. syn. nonnuU. etEng. Bot. 1. 1278 (1804) ; et herbar. 

 HooK.Trans. Lin. Soc. X,388,excl. syn.plur. T. 3i,f. i (1810). Smith Comp. Fl. Br. 3 ed. 

 163 (1818). Hook. Tayl. Muse. Biit. i, t. 8 (1818). Hook. Fl. Scot. P. 2, 120 {1821). 

 Gray Nat. Arr. Br. PI. i, 709, i (1821). Grev. Arn. Mem. Wern. Soc. IV, t. 7, f. 1-4 

 (1822). Spreng. S^-st. Veg. iv, 216 (1827). Brid. Bry. univ. ii, 728, p.p. (1827). Hook. 

 Br. Fl. ii, 5, excl. syn. plur. (1833). Mackay Fl. Hib. P. 2, 7 (1836). C. Muell. Syn. 

 Muse, i, 7 (1849). Thed. in Bot. Not. 1849, p. 77. Hartm. Skand. Fl. 6 ed. 437 (1854). 

 WiLS. Bry. Brit. 11, t. 8 (1855). Zetterst. Mon. Andr. Scand. 37 (1855). Schimp. 

 Bry. Eur. vi, Mon. ig, t. VI (1855) ; Syn. Muse. 666 (i860), et 2 ed. 818 (1876). Berk. 

 Handb. Br. M. 309, t. 2, f. 6 (1863). Hobk. Syn. Br. M. 21 (1873). 



Andr. rupestris Var. gigantea Swartz in Herb. Turner. 



Autoicous ; in dense, blackish-red, glossy tufts. Stems erect, 

 1-3 in. high, fastigiate, much branched, filiform and naked at base. 

 Leaves nerveless, densely crowded, closely appressed at base when dry, 

 with the apices patent : erecto-patent when moist, with the apices 

 straight or subincurved, smooth, glossy, obovate, contracted a little 

 below the middle, or from an oblong base, spathulate, with a short 

 acumen at apex ; the margin obtusely serrate above the base, entire in 

 upper part. Areolation flexuoso-linear at base, minute and rounded 

 above, in parallel rows. 



Perichastium large, of 6-7 leaves, bracts resembling the comal 

 leaves, apex with a hyaline border, innermost convolute, gradually 

 acuminate ; capsule oblong-ovate, black-brown, on a dark pseudo- 

 podium. 



Male infl. obtusely gemmiform, paraphyses very long, flexuose, 

 clavate, bracts broadly ovate. (T. Ib) 



