Page:The Botany of the Antarctic Voyage.djvu/483

Falklands, etc.]

(By the Rev. M. J. Berkeley.)

1. AGAEICUS, L.

1. longinquus, Berk.; pileo obliquo suborbiculari albo demum pallide fusco glabra nitente, strato superiore gelatinoso, stipite curto quandoque brevissimo pallide flavo-fusco basi albo-floccoso, lamellis albis subfurcatis, interstitiis laevibus. (Tab. CLXIII Fig. V.)

Hermite Island, Cape Horn; on dead wood near the sea.

Pileus &frac34; uno. et ultra latus, tenuis, oblique ovatus vel semiorbicularis, primum subtiliter pruinosus, mox autem glaberrimus, nitens; margine striato; stratum epidermale gelatiuosum. Stipes vix lineam exsuperans quandoque obsoletus, &aelig;qualis, primum centralis, deinde excentricus aut omnino lateralis, subtiliter pruiuosus, demum glaber, pallide flavo-fuscus, ad matricem basi tomentosa affixus. Lamell&aelig; alb&aelig;, distantiuscul&aelig;, subfurcat&aelig;, prope marginem pr&aelig;sertim subventricos&aelig;, decurrentes, interstitiis l&aelig;vibus, non reticulatis.

The nearest ally of this species is perhaps ''Ag. mitis'', Pers., but the stem is not dilated upwards and the pileus is seldom perfectly lateral. Its colour, too, is different, and it has not the same opake appearance when dry. The upper stratum is gelatinous, though the pileus is dry externally; a character common to several closely allied species. It resembles also some smaller forms of ''Ag. algidus'', Fr., but that is at first resupinate, whereas in the present species the stem is normal, though, as in most of the smaller excentric Agarics, occasionally obsolete. I do not know any other species with which it is necessary to compare it.

Plate CLXIII Fig. V. — 1, Agaricus longinquus, Berk., of the natural size, from rather young specimens; 2, another:&mdash;magnified.

2. exquisitus, Berk.; minimus, tenermnus, pileo ferrugineo subtiliter pulverulento, stipite brevi filiformi sursum incrassato pulverulento pileo concolori, basi dilatata irregulariter floccoso-membranacea, lamellis paucissimis ventricosis subliberis albo-marginatis interstitiisque laevibus ferrugineis.

Port Louis, Falkland Islands; on stems of Chiliotrichum amelloides.

Pileus membranaceus, 1 lin. latus, orbicularis, subtiliter pulverulentus, ferrugineus. Stipes 2 lin. altus, filiformis, sursum incrassatus, flexuosus, pulverulentus, pileo concolor, basi disco irregulari flexuoso-membranaceo affixus. Lamell&aelig; pauc&aelig; (6), subliber&aelig;, ferrugiueo-fusc&aelig;, interstitiis latis laevibus.

This elegant little Agaric differs from ''Ag. horizontalis'', Bull., an imperfectly known species, which I have received from Dr. L&eaccute;veill&eacute; and have myself gathered on the trunks of trees in the park at Burleigh, near Stamford, in being altogether more delicate, in the membranaceous pileus, and especially in the absence of smaller gills between the larger. The pileus of ''Ag. horizontalis'' also is much darker when dry.

3. Glebarum, Berk.; pileo carnoso late umbonato glabro pallide fusco, stipite brevi glabro sursum subinerassato solido, basi mycelio floccoso affixa, lamellis latiusculis adnatis horizontalibus fulvis. (Tab. CLXII. Fig. III.)

Berkeley Sound, Falkland Islands; growing out of tufts of Bolax on the hills, where it endures a great degree of wet and cold.

Pileus &frac34; unc. latus, glaberrimus, subhemispherieus, umbonatus, pro ratione valde carnosus, senectute rugosns; nequaquam viscidus. Stipes &frac34; unc. altus, 1&frac12; lin. crassus sobdus, subtiliter fibrillosus, sursum incrassatus, basi ad