488 ADDENDA AND CORRIGENDA 
Page 67. Insert— 
3A. Leptogium andegavense Hy Hssai sur les Lich. d’Anjou, 
p. 28 (1893) fide Harm. Lich. Fr. 1, p. 106 (1905).—Thallus 
lobate, turgid, sometimes obscured by the crowded apothecia. 
Apothecia scarcely 1 mm. in diam. ; hypothecium of stratified 
plectenchyma, the cells more crowded -in the upper layers ; 
spores 25 » long or more, often narrower at one end, 4-5 septate, 
with a few longitudinal septa.—Collemodium andegavense Wats. 
in Journ. Bot. lv. p. 110 (1917). Specimen not seen. 
Similar to L. turgidum but less plicated and with the appearance 
of a small Collema pulposwm. 
Hab. On limestone walls near Taunton. 
Page 74. Under Leptogium sinuatum, delete 3-septate. 
Page 104. Under Solorina saccata, after spores reddish-brown, 
add with warted epispore. 
Page 118. Under Candelaria concolor Evxsicc., add Larb. Lich. 
Cantab. n. 16. 
Page 157. Under Cetraria islandica Hwsicc., add Johns. n. 441 
(Teesdale, Durham). 
Page 223. Insert— 
36a. Placodium Pollinii A. L. Sm.—Thallus thin, white then 
greyish, smooth, continuous or indistinctly cracked-areolate, with a 
darker hypothallus. Apothecia rather large, scattered or crowded, 
plane, becoming convex, at first brick-red with a brown tinge 
becoming blackish ; hypothecium dingy-ochraceous ; paraphyses 
slender, septate, slightly thicker at the tips; spores fusiform- 
ellipsoid, 15-16 p long, 8-9 pw thick.—Blastenia Pollinii Massal. 
in Flora xxxv. p. 575 (1852). Lecanora Pollinii Massee in 
Grevillea xxi. p. 60, figs. 1-8 and 5 (1882). 
The thallus evidently gives no reaction with potash (Hepp 
Exs. n. 402). The apothecia have a distinct proper margin; the 
spores vary greatly in size from 9 » long upwards, and from 5 p thick. 
Hab. On the bark of trees.—Specimen from Yorkshire in the 
Leighton Herbarium, Kew. 
Page 233. Physcia fusca A. L. Sm., insert— 
Var. cesio-pruinosa A. L. Sm. Differs from the species in 
the bluish tinge of some of the lobes, chiefly towards the centre. 
—Ph. aquila var. cesio-pruinosa B. de Lesd. in Bull. Soc. Bot. 
Fr. lvii. p. 31 (1910); Lillie in Scott. Bot. Rev. 1, p. 149 (1912). 
Specimen not seen. 
Noted by Lamy (Bull. Soc. Bot. Fr. xxv. p. 383 (1878)) as a growth 
form or appearance only. Found by D. Lillie at E. Clyth, Caithness. 
a ee 
