XEW RAEE OR CRITICAL LICHEXS 311 



Killin hills in 1913. It is recorded from Ben Lawers in Crombie's 

 Monograph. 



S. condensatum Hoffni. is the only Stereocaiclo7i as yet found in 

 Somerset. It occurs at an altitude of less than 1350 ft. on an 

 upright stone, Culbone hill (5). 



Leprocaulon ncuium (Ach.) Nyl. Near Kingston (5). 



The Cladonias are a very difficult group, both in respect to deter- 

 mination and nomenclature. The intimate knowledge of these plants 

 which Mr. T. Hebden, of Keighley, possesses has been very helpful 

 to me, and I am indebted to him for many determinations of puzzling- 

 plants. 



Claclonia foliacea (Huds.) Schaer. includes both C. endivicefolia 

 Fr. and C. alcicornis Flk. as varieties. Var, convolicta (Lam.) Wain. 

 ( = C endivicefoUa Fr.). A plant so named by Dr. Parsons was 

 obtained at Cleveden (6). The apothecia are almost sessile, so that 

 it belongs to form epiphylla Schaer. Var. alcicornis (Light.) 

 Schaer. is not uncommon in Somerset (5 & 6). 



C. pyxidata var. clilorophcea f. lepidopliora Flk. On old mossy 

 wall, Cocker Combe (5). 



C. pityrea (Flk.) Fr. Land's End (1), near Ashburton (3), 

 Exmoor, Blackdowns and Quantocks (5), Shapwick and Standerwick 

 (6), Llanberis (49). Form crassiuscula Wain, is fairly common on 

 thatched roofs and tree-stumps in vice-counties 5 and 6. f. holo- 

 lepis (Flk.) Wain. Land's End (1), Quantocks, Minehead and 

 Treborough (5), near Frome (6), Murlough Glen (Ireland 38). 

 f. cladomorplia Flk. Curland and Minehead (5), near Frome (6). 

 f. gracilior (Nyl.) Harm., Hodder's Combe (5). f. scyphifera 

 Wain. Exford (5), near Frome (6). f. squamuUfera Wain. 

 Treborough (5). f. subacuta Wain. Castle Neroche (5). 



G. Lamarkii f. Isignyi (Del.) ISTyl. There is little difference 

 between this plant and C. pityrea f. liololepis unless there is a more 

 constant 3^ellow colouration with potash, and this reaction is an un- 

 certain and inconstant one for the genus. On grassy heath, Tre- 

 borough (oj. 



C. Jimhriata (L.) Fr. A splendid specimen of the iorm. prolif era 

 (Retz.) was obtained under the shade of a bank on Blagdon hill (5). 

 Yar. conista (Ach.) Nyl. On stony banks, Horner, Exford and 

 Kingston (o). Var. tuhcsformis (Hoffm.) Fr. is not uncommon in 

 hilly districts. Var. suhcornuta form tortuosa (Del.) Nyl. Castle 

 Neroche (5) ; form nemoxyna (Ach.) Nyl., on dry rock, Horner (5). 

 Var. suhiilata iorm. Jihula (Ach.) and var. radiata (Schreb.) Nyl. 

 are not uncommon in Somerset (5 and 6). Var. coniocrcea (Flk.). 

 Quantock Combes and Haddeo valley (5). Var. ochrocJilora (Flk.), 

 Chard, Quantocks and Exmoor (5), Shapwick (6) ; forms ceratodes, 

 phyllostrota^ triincata, monstrosa and actinota have been found in 

 Somerset. Wainio unites the, two last varieties together as var. apo- 

 lepta whilst Crombie (p. 142) places them as C. ocJirocJilora. 

 Acharius' name of apolepta (1803) has priority over Floerke's name 

 of ochrochlora (1828). 



C. gracilis (L.) Hoffm Form aspera Flk., mossy rocks, Llan- 



