The Bryological Foray of the Ninth International Botanical Congress

Abstract

On August 15, 1959, 24 bryologists from six nations (fig. 9 and 10) met in Montreal for transportation by automobile to the Mont Tremblant region of the Laurentian Mountains some 80 miles north of the city. Headquarters for the foray was located at the Pines Hotel on Lac Maskinonge a few miles from St. Jovite, Quebec. Arriving in late afternoon, the participants had an opportunity to get settled before a leisurely dinner and an informal evening of gossip on the lawn. The first excursion was made to the valley of a cascading brook near Mont Tremblant Lodge (fig. 2). The vegetation, typical of much of southeastern Canada, consisted of second growth sugar maple and yellow birch, and the bryophytes were mostly common and widespread species of the deciduous forests of eastern North America. Particularly abundant mosses were Dicranum scoparium, Thuidium delicatulum, Pohlia nutans, Hypnum reptile, H. curvifoliurn, Leucobryumn glatucum, Brotherella recurvans, Heterophyllium haldanianum, and Tetraphis pellucida, to name but a few, and such hepatics as Bazzania trilobata, Barbilophozia barbata, Ptilidium pulcherrimum, Jamesoniella autumnalis, Pellia epiphylla, and Lophocolea heterophylla were exceedingly common. On welldrained slopes Polytrichum commune and Pleurozium schreberi grew in loose association with Lycopodium clavatum and various reindeer mosses. A few plants of Buxbaumia aphylla were found scattered among lichens on a dry slope. On cliffs and steep banks along the stream were Diphysciumn foliosum, Isopterygium muellerianum, Rhabdoweisia denticulata, Pterygynandrum filiforme, Leskea nervosa, Pogonatum alpinum, Scapania nemorosa, and Tritomaria exsectiformis. Grimmia alpicola var. rivularis, Blindia acuta, Andreaea rupestris, Hygrohypnum eugyrium, and H. ochraceum were