A CONSPECTUS OF THE LICHEN GENUS STEREOCAULON ...

I. MACKENZIE LAMB: A Conspectus of Stereocaulon 293
refers to this species. There is a specimen of St. dusenii in s said to be from North America,
labelled "Menzies misit. L. rarnulosus Sw. N. America Herb. Swartzii. Stereocaulon ramulosum
Achar.", and annotated by TH. FRIES "St. macrocarpum A. Rich.". St. dusenii is sometimes
"macrocarpoid" in habitus, with the upper parts of the pseudopodetia more or less
destitute of phyllocladia. The cephalodia contain Stigonema or Scytonema.
103. Stereocaulon fronduliferum LAMB (n. sp.)
ex MARTIN, Trans. Roy. Soc. New Zealand, Bot. 3 (8): 152 (1966) et MARTIN et CHILD, Lichens of New
Zealand : 158 (1972) (nomen nudum).
Diagn. : Pseudopodetia arcte affixa, plus minusve erecta, ad 3.5 cm alta (sed saepe minora),
ramosa, teretia aut leviter complanata, habitu dorsiventrali (uno latere corticata, glaucescentia,
saepe transversim rugosa aut fissa, altero latere decorticata, glabra, ochraceo-albida), ramificatione
bilaterali, distincte pinnatifida. Rarnuli phyllocladoidei complanati, simplices aut
flabellatim divisi, superficie dorsali glauco-corticati, ventrali pallidiores; longit. 1-2 mm, sed
basin pseudopodetiorum versus longiores. Soredia nulla. Cephalodia lateralia, sessilia aut
breviter pedicellata, subglobosa, 0.7-1.3 mm lata, primo laevia, dein leviter aut sat distincte
foveolata; fuscescentia, subnitida, intus solida (protosacculata), algas Nostocaceas continentia,
cortice 40-50 p crasso, incolori aut pallide isabellino, palisadico. Apothecia terminalia, fere
ab initio hemisphaerico-convexa et immarginata, tandem fere globosa, 1.0-1.5 (-2.0) mm lata,
fusconigricantia, subnitida opacave. Conus centralis laxe contextus, hyphis hyalinis saepe
materia viridiflava et granulosa (KHO dissolventi et solutionem aurantiaco-rubescentem
effundenti) inspersis. Hypotheciurn pigrnentiferum (fuscum, KHO fere immutatum), ad
150 p crassum. Hymenium 90-110 (-120) p altum. Sporae (6) 8nae, rectae vel subrectae,
cylindrico-fusiformes, (4) 5-9 (-10)-septatae, ad septa passim leviter constrictae, longit. 40-
70 (-80) p, crassit. 3.5-4.5 (-5.5) p. Atranorinum, acidum fumarprotocetraricum et fortasse
parce acidum protocetraricum continens (K - vel leviter fuscoflavescens, PD intense miniatorubescens).
- Species valde peculiaris, phyllocladiis complanatis et flabellato-divisis fere St.
foliolosum NYL. simulans. A cel. BABINGTON jam anno 1855 recognitum et nomine St. ramulosum
var. compressum appellatum fuit.
Typus: New Zealand, exact locality, collector and date not indicated, commun. LOCKE TRAVERS
to the Exposition Universelle, Paris, 1889 (PC-HUE, holotypus, named by HUE St. ramulosum var.
compressum).
Facultative synonyms: Stereocaulon ramulosum var. compressum BAB. in HOOK. F. The Botany of
the Antarctic Voyage of H. M. Discovery Ships Erebus and Terror in the Years 1839-1843 . . . Part 11.
Flora Novae-Zelandiae. Part ii. Flowerless Plants: 294 (1855). - Stereocaulon ramulosum [subsp.
macrocarpum] f. compressum (BAB.) HUE, NOUV. Arch. Mus. Hist. Nat. ser. 3, 2: 245 (1890), nom.
illegit., non St. ramulosum f. compressum NYL. ex anno 1860.72
Mat. chim. : atranorin, fumarprotocetraric acid, and probably a trace of protocetraric acid.
Distrib.: New Zealand. Unverified records: Colombia (HUE, 1898-1901; LINDAU, 1912), perhaps
referring to St. ramulosum f. subcompressum LAMB.
Remarks: ZAHLBRUCKNER, Catalogus Lichenum Universalis, vol. I (1922) p. 692, published
the combination Stereocaulon compressum, referring to a species of Sphaerophorus, by
a lapsus, wrongly ascribing it to LINDSAY. For this reason it seems advisable to use a different
name for the present species. Short descriptions (as St. ramulosum var. compressum)
were given by TH. FRIES (1857, p. 12, footnote; 1858, p. 26, footnote), NYLANDER (1860, p.
72 A facultative synonym of St. strictum var. compressum (NYL.) LAMB.