A CONSPECTUS OF THE LICHEN GENUS STEREOCAULON ...

290 Journ. Hattori Bot. Lab. No. 43 1977
the phyllocladia of St. evolutum GRAEWE or certain states of St. sterile (SAV.) LAMB. Soredia
present or absent. Several collections seen from South Africa (Table Mountain, Western
Cape Province, Natal).
Var. subcorticatum (RAs.) LAMB
Canad. J. Bot. 29: 581 (1951). - Stereocaulon subcorticatum RAS. Ann. Bot. Soc. Zool. Bot. Fenn.
Vanamo, 2 (1) : 24 (1932).
Typus: Chile, Magallanes, Fjordo de Agostini, on rocks at seashore, leg. H. ROIVAINEN, 1929
(H-R~S, holotypus; S, isotypus).
Remarks: pseudopodetia almost entirely clothed with corticate thallus-mantle. Often
fertile, but seldom sorediate. Grows preferentially in more shaded locations. Rather
common; seen from Chile (Magallanes, Aysen, Juan Fernandez), Argentina (Tierra del
Fuego, Rio Negro), Australia, Tasmania, and Gough Island in the south Atlantic.
99. Stereocaulon crambidiocephalum LAMB (n. sp.)
ex VARGAS, Revista Univ. (Cuzco), no. 94: 3 (1948) (nomen nudum).
Diagn. : Pseudopodetia erecta, substrato arcte affixa, 4.5-8.0 cm alta, robusta, ramis
majoribus crassit. 2.Ck3.5 mm, apicalibus 0.8-1.2 mm; parce subdichotomice ramosa, albida,
fere in toto decorticata et subfarinosa; apicibus dense corymbiformiter sorediosis, sorediis
ramulis tenuibus congestis suffultis et capitula 2-6 mm lata formantibus. Phyllocladia parce
evoluta (praesertim basin versus, superne fere deficientia), cylindrico-coralloidea, vulgo
ramosa, longit. 0.8-2.0 (-3.0) mm, divaricata, corticata, partim parce subfarinosa. Cephalodia
jam basalia, jam lateraliter insidentia, cinereo-albida, subglobosa, sacculata, 1.0-2.3 mm lata,
scrobiculato-foveolata vel cerebriformia. (Apothecia et pycnidia ignota.) Atranorinum,
acidum perlatolicum et acidum anziaicum continet (KSbene flavescens, PDSpallide flavescens).
-A St. meyeri B. STEIN, cui peraffine, habitu magis robusto, pseudopodetiis decorticato-farinosis,
phyllocladiis superne rarescentibus aut nullis, et praecipue soraliis apicalibus
multoties majoribus et ramulis minutis congestis suffultis differt.
Typus: Peru, Dept. Cuzco, Prov. Paucartambo, Llulluchayocc, altit. 3200 m s. m., on rock, leg. C.
VARGAS, 1944 (no. 4301) (VARGAS, holotypus; CAN, MICH, isotypes).
Mat. chim. : atranorin, perlatolic acid, anziaic acid.
Distrib. : Peru and Colombia.
Remarks: closely related and similar to St. meyeri B. STEIN, differing chiefly in larger
and more robust stature and large apical heads of soredia borne on fine congested branchlets.
The cephalodia, containing Stigonema, are similar to those of St. ramulosum (Sw.) RAUSCH.
Rare; known from 4 collections.
100. Stereocaulon delisei BORY
ex DUBY, Aug. Pyrami de Candolle Botanicon Gallicum, ed. 2, Pars secunda: 619 (1830); SCHAER.
Enumeratio Critica Lichenum Europaeorum: 178 (1850); OLIV. Flore Analytique et Dichotomique
des Lichens de lYOrne, Part 1 : 59 (1882); CROMB. A Monograph of Lichens found in Britain: 117 (1894);
HARM. Lichens de France, Fasc. 111: 363 (1907); A. L. SM. A Monograph of the British Lichens, ed.
2, Part I: 410 (1918); MAGN. Goteborgs K. Vetensk.- o. Vitterh.-Samh. Handl. ser. 4,30 (7): 44 (1926);
Flora over Skandinaviens Busk- och Bladlavar: 67 (1929); DODGE, Ann. Cryptog. Exot. 2 (2): 116
(1929); FREY, Rabenhorsts Krypt.-F1.9, Abt. IV, 1. Halfte: 82, 106 (1932); LAMB, J. Bot. 77: 76 (1939);
MOT. Porosty (Lichenes), in Flora Polska, 3 (2): 378 (1964); DAHL et KROG, Macrolichens of Denmark,