ON RADULA GERMANIC A, JACK. 227 



glabrous ; outer ovate or roundish, pilose oii the back. Ligules 

 few, yellow, spreading, with an oblong yellow lamina ^ in. long. 

 Scales of the receptacle lanceolate, navicular, under ^ in. long. 

 Disc corollas ^ in. long, with a tube not more than half as long as 

 the cylindrical limb, which has five lanceolate teeth. Achene sub- 

 terete, glabrous when mature, ^ in. long. Pappus of about 8 

 unequal lanceolate rigid stramineous paleae l-12th in. long, fi-ee 

 down to the base. — Glaziou 12845. Easily recognised in the genus 

 by its shrubby Wedelioid habit, and leaves all opposite up to the 

 top of the branches. 



O^ 



ON llADULA GERM AN A, Jack. 

 By W. H. Pearson. 



" Dioica. Caule prostrato, implexo caespitoso, subpinnatim 

 ramoso ; foliis imbricatis adscendentibus planiusculis integerrimis, 

 lobo superiori breviter obovato-rotundato apice dilatato, lobo 

 inferiori triplo minori adpresso, quadrato, angulo acuto, invo- 

 lucralibus obovatis ; perianthiis applanatis, obconicis, truncatis. 

 Flores masculi in stirpe propria plerumque laterales ; folia peri- 

 gonialia arete imbricata numerosa, spicas longiusculas formantia, 

 in medio canalem secundum caulem efficientia." — Jack. 



Diameter of stem -17 mm. x -11 mm., •16x-12, -ISx-ll; in- 

 volucral superior lobe 1-1 mm. longx "6 mm. broad, lobule -8 mm. 

 long X -4 mm. broad, 1- x -5, lobule •9x-4; ordinary leaves, 

 superior lobe 1-2 mm. long x -8 broad, 1-2 x -7, 1*1 x '8, l-x*?, 

 l-X-6, lobule -7 mm. longx -3 mm. broad, •6x-4, '6x'35, 

 •65 X '35, -4 X '3 ; perigonial leaves, superior lobe -8 mm. long x '4 

 mm. broad, -7 X -45, -625 x -45, -6 x -45, -6 x -4 ; lobule -6 mm. long 

 X -4 mm. broad, -45 x -3; cells ^^^mm. ; antheridia •2mm. x -15 mm. ; 

 archegonia -12 mm. x '04 mm; colesule 2-2 mm. long xl'l mm. 

 broad, 2*1 x -9 ; gemmae -1 mm. diameter usually. " Valves of the 

 capsule -9 mm. long; elaters ^28 mm. longx •06 mm. thick; spores 

 •044 mm. dia." — Jack. 



Syn. Radula complanata, Dmrt., var. y. plumulosa and Radula 

 complanata, Dmrt., var. d. tenuis, Nees, Nat. Eur. Leb. iii. p. 148 

 (1838), G. L. N. Syn. Hep. p. 257 (1844). 



Radula atiyustata, Pearson MSS. 



Radula yermaiia, Jack, 'Flora,' n. 23 and 25 (1881), pp. 355, 

 395—7 



Delin. Jack, ' Flora' (1881), viii., fig. 6, n. 1 ? fertile, n. 2 ^ . 



Exsicc. Husn. Hep. Gall., fasc. 4, n. 86, as Radula complanata, 

 var. propagulifera. 



Hab. In Scotland, in alpine and subalpine situations, on 

 rocks, and amongst mosses. Eocks by the Burn, Forfar, April, 

 1860, A. Croall. Loch-na-Gat, Ben Lawers, Geo. Davies. Mael 

 Tarmachan, near Ben Lawers, August, 1878, C. J. Wild ; July, 

 1880, G. A, Holt, Ben Cruachan, Loch Awe. Ben Laoigh. 



