. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. DISCOVERY REPORTS (no. 2640), where it formed a conspicuous association on flat stones lying in extensive rivulets and seepage areas derived from an ice cap higher up. Geographical Distribution. Outside the Graham Land sector of the Antarctic, this species is known from Argentina and Chile. It and St. chpima are perhaps bipolar-vicarious species. Genus Microglaena Korber, 1855 Microglaena antarctica M. Lamb, (Fig. 3/); PL IV, fig. 5) South Shetlands. Nelson Island: Harmony Cove, on fine-gr
. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. DISCOVERY REPORTS (no. 2640), where it formed a conspicuous association on flat stones lying in extensive rivulets and seepage areas derived from an ice cap higher up. Geographical Distribution. Outside the Graham Land sector of the Antarctic, this species is known from Argentina and Chile. It and St. chpima are perhaps bipolar-vicarious species. Genus Microglaena Korber, 1855 Microglaena antarctica M. Lamb, (Fig. 3/); PL IV, fig. 5) South Shetlands. Nelson Island: Harmony Cove, on fine-grained non-calcareous rock; Discovery 10^-^-=; 14 xii 1934 (nos. 1480--1, 1480-2, the latter the holotype). Deception Island: east coast, by Ringed Penguin rookery, on agglomerate rock ;, i936(no. 1381^3); tuff cliffs above mam Ringed Penguin rookery, altitude c. 140 m.; , 20. i. 1936 (nos. 1399-4, 1400-13, 1400-38); south-west side of 'Neptune's Bellows', on weathered agglomerate crags with fair sheker; Discovery 1933-5. lo- 'â 1935 (nos. 1488-1, 1488-2 pr. p.). Desolation Island: on non-calcareous rocks in gull rookery, altitude c. 20 m.; Discovery 1933-5. §⢠i- ^935 (no. 1487-6). Description. Thallus cnistaceus, imiformis, plagulas irregidares 0-4-2-5 p.^ ^ Microglaena antarctica centim. latas inter alios lichenes formans, primo areolatus, mox verrncoso- M. Lamb. Spores. areolatus aut congeste verrucosus, ad i (-2) mm. crassus, albidus vel impure albidus vel sordtde ebttrneus, opacus, epruinosus; areolae seu verrucae o-3-i-o mm. dtam., rotrmdatae angulosaeve, planae aut convexae, saepe convoluto-tuherculatae. Hypothallus nullus dMus; soredm etisidia desunt. Gonidia cystococcoidea, globosa, 4-5-i5-o/^ diam., pallide aut sat laete vmdta, pariete tenui Perithecia singulatim verrucis thallinis o-5-i-o mm. latis insidentia, thallo obducta, apice denudato fusconigricanti, ostiolo punctiformi, minuto, saepe levtter papUlato. Excipulum rmmersrm globosum 4
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