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The Lichens and Lichenicolous Fungi of Belgium and Luxembourg ...

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104 P. DIEDERICH & E. SÉRUSIAUX<br />

GYROPHORA Ach., see Umbilicaria<br />

HAEMATOMMA A. Massal.<br />

ochroleucum (Neck.) J. R. Laundon<br />

On siliceous or s<strong>and</strong>stone rocks, usually in protected,<br />

dry <strong>and</strong> ± vertical surfaces; also corticolous<br />

on old Fagus <strong>and</strong> Quercus in wellpreserved<br />

forests, more rarely on Populus or<br />

Salix, in shaded or opened conditions.<br />

Two chemotypes are known from the study area:<br />

H. ochroleucum s. s., syn. H. coccineum (Dicks.)<br />

Körb., H. coccineum var. ochroleucum (Neck.)<br />

Th. Fr.: B Ard.: R. L Ard.: RR, Lorr.: R.<br />

H. ochroleucum var. porphyrium (Pers.) J. R.<br />

Laundon, syn. H. porphyrium (Pers.) Zopf, H.<br />

coccineum var. porphyrium (Pers.) Th. Fr.: B<br />

Mar.: R, Fl: AR, Camp.: RRR, Brab.: RRR,<br />

Mosan: RR, Ard.: R. L Ard.: RR, Lorr.: AR.<br />

Lit.: Ba: 9, Di: 109-110, Ho: 131, La68: 77, NL84: 14,<br />

NL92: 170, Lambinon (1968b: 405).<br />

coccineum (Dicks.) Körb., see H. ochroleucum s. s.<br />

coccineum var. ochroleucum (Neck.) Th. Fr., see H.<br />

ochroleucum s. s.<br />

coccineum var. porphyrium (Pers.) Th. Fr., see H. ochroleucum<br />

var. porphyrium<br />

ochroleucum var. porphyrium (Pers.) J. R. Laundon, see under<br />

H. ochroleucum<br />

porphyrium (Pers.) Zopf, see H. ochroleucum var. porphyrium<br />

ventosum (L.) A. Massal., see Ophioparma ventosa<br />

HALECANIA M. Mayrh<strong>of</strong>er<br />

viridescens Coppins & P. James<br />

Corticolous, mainly on young trunks <strong>of</strong> Alnus,<br />

Fraxinus, Malus <strong>and</strong> Salix, in sheltered <strong>and</strong><br />

humid conditions.<br />

B Mosan: R, Ard.: R, Lorr.: R. L Ard.: R, Lorr.: R.<br />

Lit.: Di: 110-111, L5: 21, NL84: 14, NL92: 170.<br />

HAWKSWORTHIANA U. Braun<br />

*peltigericola (D. Hawksw.) U. Braun<br />

Syn.: Ramularia peltigericola D. Hawksw.<br />

On Peltigera rufescens.<br />

B - . L Lorr.: RR.<br />

Lit.: L4: 29.<br />

HEPPIA A. Massal.<br />

guepinii (Delise) Nyl., see Peltula euploca<br />

HETERODERMIA Trevis.<br />

speciosa (Wulfen) Trevis., syn. Physcia speciosa (Wulfen)<br />

Nyl. <strong>The</strong> ancient report <strong>of</strong> this species from L Ard. by<br />

Ko: 160 is not sustained by any herbarium material <strong>and</strong> is<br />

most doubtful.<br />

HOBSONIA Massee<br />

*christiansenii B. L. Brady & D. Hawksw.<br />

On corticolous lichens, mainly Physcia spp., <strong>of</strong>ten<br />

in nitrophilous conditions.<br />

B - . L Lorr.: AR.<br />

Lit.: Di: 241-242, LF0: 18.<br />

HOMOSTEGIA Fuckel<br />

*piggotii (Berk. & Broome) P. Karst.<br />

On Parmelia saxatilis.<br />

B Ard.: RR. L - .<br />

Lit.: L5: 21, NL97: 49.<br />

HUILIA Zahlbr., see Porpidia<br />

HYMENELIA Kremp.<br />

epulotica (Ach.) Lutzoni<br />

Syn.: H. prevostii (Duby) Kremp., Lecanora<br />

prevostii (Duby) Th. Fr.<br />

Saxicolous on ± sunny calcareous outcrops, in natural<br />

conditions.<br />

B Brab.: RRR, Mosan: RR, Lorr.: RR. L Lorr.: RRR.<br />

Lit.: DG: 32, NL77: 20, NL84: 14, NL87: 21, NL97: 49.<br />

ceracea (Arnold) M. Choisy, see under Ionaspis<br />

lacustris (With.) M. Choisy, see Ionaspis lacustris<br />

prevostii (Duby) Kremp., see H. epulotica<br />

HYPERPHYSCIA Müll. Arg.<br />

adglutinata (Flörke) H. Mayrh<strong>of</strong>er & Poelt<br />

Syn.: Physcia adglutinata (Flörke) Nyl., P. elaeina<br />

auct., non (Wahlenb.) A. L. Sm.

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