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A CONSPECTUS OF THE LICHEN GENUS STEREOCAULON ...

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I. MACKENZIE LAMB: A Conspectus of Stereocaulon 313<br />

of the copy used by BACHMANN would be necessary, because it is heterogeneous; in co~o,<br />

FH and us a depauperate meager state of St. pileaturn AcH., but in PR a mixture of St. pileatum<br />

and St. nanodes TUCK., and in s entirely St. nanodes. The present location of BACH-<br />

MANN'S herbarium is unknown to us.<br />

St. pileatum f. ramificans MAGN.<br />

Typus: Sweden, Vastergotland, Alingsls, leg. STENHOLM, 1896 (UPS-MAGN, holotypus).<br />

St. paschale var. evolutoides MAGN.<br />

Over 11 specimens from Sweden (Bohuslan, Vastergotland, Varmland and Medelpad)<br />

cited, no holotype designated. We have selected as lectotype a specimen from Varmland,<br />

Sillerud, Noretjarn, leg. A. H. MAGNUSSON, 1912 (UPS-MAGN, lectotypus, lectotypif. nov.).<br />

St. tomentosum var. graphiticola RAS.<br />

Typus: Finland, Savonia borealis, Kuopio, Laivo Island, "supra saxa schistosa graphitica juxta<br />

fodinam", leg. V. RASANEN and A. S. LEPPALA, 1946 (H-RAS, holotypus; isotypes distributed in Licheno-<br />

theca Fenn. no. 247; that in LD examined by us).<br />

St. paschale subsp. evolutoides f. laxatum LAMB<br />

Typus: Sweden, Varmland, Sillerud, Jarnsjon, leg. A. H. MAGNUSSON, 1912 (UPS-MAGN, holotypus)<br />

St. paschale f. taeniarum MAGN.<br />

2 specimens from Sweden, Bohuslan, cited, no holotype designated. As lectotype we<br />

selected that from par. Ockero, Bjorko, leg. A. H. MAGNUSSON, 1916 (UPS-MAGN, lectotypus,<br />

lectotypif. nov.).<br />

St. leporinum TH. FR.<br />

Several specimens cited from Madeira, leg. DIEDRICHSEN et al., and Canary Islands,<br />

leg. BOURGEAU et al., no holotype designated. As lectotype we have chosen the specimen<br />

from Madeira, Rio Frio, leg. F. DIEDRICHSEN (date?) (UPS-TH FR, lectotypus, lectotypif. nov.).<br />

It is quite typical St. azoreum (SCHAER.) NYL. (= "St. sphaerophoroides" mult. auctt., non<br />

TUCK.).<br />

St. granulosum LAUR.<br />

Specimens cited in HARTUNG (1857) from the Canary Islands (Lanzarote and Fuertaventura)<br />

and from Madeira; no holotype designated. HEPP, Flechten Europas no. 305 is<br />

quoted; this is from Madeira, Cural, leg. HEER and HARTUNG, and may be proposed as isolectotype<br />

material (lectotypif. nov.). Examples in FH-TUCK, PC and s studied by us.<br />

St. maderense TUCK.<br />

Typus: Madeira, Pico Ruivo, leg. PICKERING, U. S. Exploring Exped. 1838-42 (FH-TUCK, holotypus).<br />

It was subsequently annotated by TUCKERMAN himself "S. sphaerophoroides (S. Maderense<br />

perperam mihi olim)".<br />

St. leporinum [var.] a. elatum TH. FR. and [var.] p. pumilum TH. FR.<br />

Included in the several specimens cited under St. leporit~um (see above), holotypes not<br />

designated. BOURGEAU, Plant. ,Canar., iter secund. no. 1594, collected in the Canary Islands,<br />

Teneriffe, Selva de Las Mercedes, by E. BOURGEAU, 1855, as St. ramulosum, might eventually<br />

be considered appropriate as isolectotype material of var. elatum, and is typical St. azoreum

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