A CONSPECTUS OF THE LICHEN GENUS STEREOCAULON ...

I. MACKENZIE LAMB: A Conspectus of Stereocaulon 20 1
meratum (s. Examples of this number seen in FH, LD and ups are St. evolutum GRAEWE or mixtures of
St. paschale and St. evolutum). - HALE, Lich. Amer. Exs. Fasc. IV (1970) no. 98, as St. dactylophyllum
(FH, LD). - HAV. Lich. EXS. Norveg. Fasc. VII (1905) no. 262 (BG); Lich. Norveg. Occid. Exs. Fasc.
VII (1938) no. 153 (PR. This example has some intermixture of St. grande (MAGN.) MAGN.). - HEPP,
Flechten Europas Band VZ (1857) no. 304, as St. paschale B. conglomeratum (FH, LD, PC, s.). - Krypt.
Exs. Vindob. Cent. XL (1957) no. 3918 pr. p. (co~o, FH, L, LD. The examples in FH and L contain also
St. alpinum LAUR. var. erectum FREY). - KUROK. Lich. Rarior. et Crit. Exs. Fasc. I11 (1971) no. 145,
as St. sasakii (FH, LD). - Lich. Canad. Exs. no. 66 (1970), no. 67 (1970) (CAN). - Lichenotheca Fenn.
Fasc. V (1947) no. 103, as St. squamescens, pr. p. (CAN, UPS. The example in LD is St. saxatile MAGN.);
Fasc. VII (1947) no. 171 pr. p. (FH. This example is partly St. dactylophyllum FLK.); Fasc. X (1947)
no. 248 (FH, HAK); Fasc. XXXI (1953) no. 760 (FH); Fasc. XXXIX (1956) no. 961 (FH); Fasc. XLIII
(1957) no. 1056 (FH, with parasymbiontic Scutula); Fasc. XLIV (1958) no. 1081 (FH, with parasymbiontic
Scutula); Fasc. L (1959) no. 1230, as St. subcoralloides (FH). - MAC. Canad. Lich. ser. I (1893) no.
44, as St. tomentosum (WELC); ser. I1 (1909 - 12) no. 133 (FH, MSC, US. An example in WELC is St. saxatile
MAGN., and one in DUKE is St. tomentosum FR.); no. 134, as St. tomentosum, pr. p. (us. The material
distributed in this number was collected from four different Canadian localities. An example in
DUKE is St. tomentosum FR., and one in WELC is St. saxatile MAGN.); no. 258 (us); no. 259, as St. tomentosum
(us). - MAGN. Lich. Sel. Scand. Exs. Fasc. VII (1933) no. 157 (DEGEL, PR). - MALME, Lich.
Suec. Exs. Fasc. XXI (1915) no. 509A, B (PR, WIS). - MERESCH. Lich. ROSS. EXS. Fasc. I1 (1913) no. 39
(FH). - MIG. Cryptog. German. Austr. et Helvet. Exs. Fasc. XXV (1904) no. 123 (FH, MSC, OC, PR, u). -
NORRL. et NYL. Herb. Lich. Fenn. Continuatio (1921) no. 501 ("pascale") (ups). - RABENH. Lich.
Europ. Exs. Fasc. V (1856) no. 134 (PR). - RAS. Lich. Fenn. Exs. Fasc. I1 (1935) no. 57, as St. paschale
var. squamescens (GB); Fasc. IV (1936) no. 197 (ups); no. 198, as St.paschale var. grandis (ups). - SAV.
Lichenotheca Ross. Decas VIII (1956) no. 74, as St. alpinum (LD). - STENHAM. Lich. Suec. Exs. Fasc.
I11 (1860) no. 80 (FH, LD, us); no. 81 pr. p., as St. paschale b. gracilentum (LD. In this example it occurs
intermixed with St. alpinum LAUR. f. gracilentum (TH. FR.) LAMB; in that in FH it is entirely the latter). -
TOBOL. Lichenotheca Polon. Fasc. VI (1955) no. 113 (FH. An example seen in LD is St. saxatile MAGN.).
- TUCK. Lich. Amer. Septentr. Exs. Fasc. V (1 854) no. 112 (FH, UPS. An example seen in TENN, and one
of two in FH, copiously fertile and without cephalodia, are tentatively referred to St. subintricans NYL.,
a doubtful species; see p. 324). - V~ZDA, Lich. Sel. Exs. Fasc. XLIX (1974) no. 1211 (FH).
Icon.: GALLBE 1972, P1. 74, figs. 566 - 572; PI. 75, figs. 573 - 578; P1. 76, figs. 579 - 583; P1. 77,
figs. 584 - 587. - FREY 1932, fig. 23 ; PI. 111, figs. 1, 2. - RAs. 1951, PI. XVI, fig. 1. - YOSHIM. 1974,
figs. 74a, 77d; PI. 33, fig. 331.
Mat. chim.: atranorin and lobaric acid; occasionally occurring in a deficient phase with
only atranorin demonstrable by present chromatographic techniques.
Distrib. Sweden, Norway, Denmark, Finland, Netherlands (probably now extinct), Scotland,
W. Germany, E. Germany, Poland, U. S. S. R. (including Estonia and Karelia), Mongolian People's
Republic, Iceland, Greenland, Canada (N. W. Temt., Yukon Territ., British Columbia, Alberta,
Saskatchewan, Manitoba, Ontario, Quebec, Labrador, Newfoundland, Nova Scotia), Miquelon
Island, U. S. A. (Maine, New Hampshire, Massachusetts, where probably now extinct, Virginia, Michigan,
Montana, Alaska), Manchuria, Korea, Japan (Hokkaido, Honshu), Chile (Valdivia, Magallanes),
Argentina (Chubut). Unconfirmed literature records also from Belgium (DE WILDEMAN et
DURAND 1898 - 1907 (1898)), N. W. France (DES ABBAYES 1934), Italy (JATTA 1900), Rumania (CRE-
TZOIU 1939; MORUZI, PETRIA et MANTU 1967), Bulgaria (NIKOLOFF 1931), U. S. A., California (TUCKE-
RMAN 1866), Sri Lanka (Ceylon) (BISWAS 1947, almost certainly erroneous, referring to St. austroindicum
LAMB), Central Africa (LINDAU 191 I), China (MULLER ARC. 1893, erroneous, = St. myriocarpum
TH. FR.), Ecuador (KREMPELHUBER 1861, erroneous, = St. myriocarpum TH. FR.).
Remarks: the type species of the genus. See p. 307 for discussion of typification. The described
infraspecific taxa which really belong to St. paschale (var. serpens TH. FR. and f. colligatum LAMB) are
obviously environmental modifications of no taxonomic significance.