Taxonomic Results of the BRYOTROP Expedition to Zaire and Rwanda 20. Grimmiaceae, Funariaceae, Bartramiaceae (Philonotis), Amblystegiaceae, Plagiotheciaceae
نویسنده
چکیده
1. Plants acrocarpous, growing erect in tufts. Capsule immersed with columella falling with attached operculum after dehiscence. Annulus absent. Central strand present. Lamina cells with straight walls, irregularly quadrate throughout and only short rectangular at the base .........................................Schistidium rivulare 1. Plants cladocarpous, prostrate in mats. Capsule exserted with operculum falling detached from columella. Annulus present. Central strand absent. Lamina cells long-linear at least below, with strongly nodose lateral walls ........ (Racomitrium) ...............................................................2 2. Leaf margins bistratose for 2-8 rows of cells forming fleshy borders. Hair-point always wanting. Spores large, roughly papillose, 18-28 μm wide.........................Racomitrium lamprocarpum 2. Lamina cells unistratose throughout. Hair-point present, at least on some uppermost leaves. Spores small, finely granular on the surface, 12-14 μm wide...........................................................3 3. Basal marginal border present, composed of 1025 wide and pellucid, usually esinuose cells. Costa bistratose, with 3-4 large ventral cells in the basal part. Hair-point strongly flexuose, mostly about 0.5-1.0 mm, smooth. Alar cells not or slightly Abbreviations:
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ریخت‌شناسی هاگ در برخی گونه‌های خزه‌ای شمال تهران، ایران
طی بررسی فلوریستیک خزگیان ارتفاعات شمال تهران، ریخت‌شناسی هاگ در 15 گونه از خزه‌های منطقه متعلق به خانواده‌های Amblystegiaceae، Brachytheciaceae، Encalyptaceae، Funariaceae، Grimmiaceae، Mniaceae، Orthotrichaceae و Pottiaceae با میکروسکوپ نوری و الکترونی نگاره مورد مطالعه قرار گرفتند. شکل هاگ در کلیه گونه‌های مورد مطالعه گرد بود و اندازه آنها از (06/0±) 07/8 × (06/0±) 50/7 میکرومتر در Schistidi...
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