You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
Wliilc Nylander's clescriptioii is extremely brief and in terms of fJunnc1.riu brrtntrccl (SIT.) Mass.,<br />
our material agrees well with such statements as he givcs in conjunction with his description of<br />
ZZ. brunnea (Lich. Scand., 123; 1861).<br />
On rock with A4spiciliopsis nlucrophfhalnm.<br />
I<br />
ICerguelen : Observatory Bay, B.A.N.Z.A.R.E. B192-50.<br />
I'ANNARIA Del.<br />
P(LJL?~~LJ~~u<br />
I)el. ill Bo~y, Dict. ('lrrrs. Hist. Nrrt., 13, 30; 1828.<br />
Type: 1'. rl~bigittostr (Thnnb, in Ach.) Del. in Bory.<br />
Thallns grannlar, sqi~amulosr to foliose with a well developed bluish black or black hypothallus,<br />
rarely with dark, more or less tangled rhieinae below, heteromerous; upper cortex of<br />
large-celled pseudoparenchyma formed from a palisade of hyphae; algae NOS:OC; medulla<br />
uniform and arachnoid, or with the upper portion of periclinal thin-walled, loosely woven hyphae,<br />
aid the lower portion of densely tangled hyphae; without lower cortex. Apothecia at first snnk<br />
in the thallus, finally sesqile or peltate, superficial; amphitheciuin pseudoparenchymatons, with<br />
a few algae in the centre ; hypothecium hyaline; asci clavate, 8-spored : ascospores hyaline, elongate,<br />
ellipsoid, to almost fnsiform with a somewhat thickened and finely verrucose wall. Spermogoiiia<br />
in hemispherical warts, spermatiophores septate with short, broad cells ; spermatia straight<br />
or very slightly curved, elongate, cylindrical.<br />
PANNARIA DICHROA (Hook. f. & Taylor), Crombie.<br />
Pannclviu dichroa (Hook. f. & Tayl.) Cronibie, Jour. Linn. Soc. Bot., 16, 220; 1876. Jour. Bot.<br />
Brit. For., 15, 106; 1877. Phil. Trans. Roy. Soc. [London], 168, 48; 1879 Rept. Sci. Res.<br />
Voy. "Challenger" Bot., 1, 2, 234; 1885.<br />
Lecanora dichrw Hook. f. & Tayl., London Jour. Rot., 3, 643; 1844.<br />
1;ecanora melanmpis Bab. in Hook. f., Crypt. Antarct., 230; 1845. F1. Antarct., 2, 536; 1847 non<br />
Ach.<br />
Pannnria Tuylori Tuck., Bull. Torrey Bot. Clnb, 6, 57; Oct., 1875. Bull. U.S. Nat. Mus., 3, 28;<br />
1876.<br />
Pannu~iu placodiopsis Nyl. in Crombie, Jour. Bot. Brit. For., 13, 334; Nov., 1875. Jour. Linn.<br />
Soc. Bot., 15,183 ; 1876.<br />
Type: Kerguelen, Christmas Harbonr, J. D. Hooker (Troy. "Erebus & Terror") in Taylor<br />
Herb. Type of P. Taylmi, same locality and collector, on rock with Placodium elegans in<br />
Tuckerman Herb., scanty so not sectioned ; type of P. placodiopsis, Kerguelen, Observatory Bay,<br />
A. E. Eaton (Venus Transit Exp.).<br />
Thalns up to 5 cm. in diameter, adnate to the substrate, centre somewhat areoiate, ver-<br />
rucose ; margin lobed, lobes. contiguous, convex, cuneate, di- or tri-chotomously branched, about<br />
5 mm. long, incised crenate, ultimate lohules about 1 mm. broad, isabella colour to ochraceous,<br />
surface dull, occasionally tops of verrucae broken off from handling, but no true isidia nor<br />
soredia ; upper cortex 75-8OP thick, of large, thin-walled, polyhedral cells, up to 15c( in diameter,<br />
irregularly arranged; algal cells probably Nostoc, mostly in perpendicular rows with some dis-<br />
crete, more or less fusiform colonies, cells mostly 6-7~ in diameter; medullary hyphne thin-<br />
walled, up to 6-7a in diameter, mostly parallel between rows of algal cells; without distinct<br />
lower cortex or rhizinae. Apothecia up to 3 mm. in diameter, crowded in the central portion of<br />
the thallus, somewhat elevated, constricted at the base; urceolate at first, with thick, involute
Change language