Náttúrufræðingurinn

Volume

Náttúrufræðingurinn - 1938, Page 51

Náttúrufræðingurinn - 1938, Page 51
NÁTTÚRUFRÆÐINGURINN I77- 1 2 3 4 5 6 Cerastium cæspitosum . Ch 10 10 10 60 — — Ranunculus acer H — 10 30 60 100 10 Hierochloe odorata . G — — 60 40 — 40 Alchemilla glomerulans II — — 30 90 70 — Alchemilla minor H — — — 20 80 — Sibbaldia procumbens . Ch — — — — 70 — Geranium silvaticum H — — — — 50 — Thalictrum alpinum H — 10 — 10 10 80 Salix glauca Ch — — — — 60 90. Salix phylicifolia Ch — — — — — 70. Agrostis canina H 10 10 30 Calamagrostis neglecta H 20 30 — — — Carex alpina H 10 — — — — w Carex lagopina H 20 20 40 10 10 — Comarum palustre HH — 10 — — — — Desehampsia flexuosa H 10 — 10 20 — 20 Empetrum nigrum . Ch — — — — — 10 Epilobium anagallidifolium . . H — — — — 20 — Equisetum variegatum II — — — — 10 40 Euphrasia latifolia Th — — — — 10 — Festuca ovina H 10 — — 10 — — Gentiana aurea Th — — — — 20 Gentiana nivalis . Th — — — 20 Gnaphalium norvegicum H — — — — 10 — Gnaphalium supinum Ch — — — — 10 — Luzula multiflora H — — — — 10 — Luzula spicata H .— — — — 20 . Pinguicula vulgaris H — — — — 10 . Poa alpina H — — — 10 40 — Potentilla verna H — — — 10 ' — Salix herbacea . Ch — — — — 20 _ Salix lanata . Ch — — — — 10 10 Vaccinium uliginosum Ch — — — — — 30 Viola palustris H — — 30 — — — Hlutföll lífmynda 1 2 3 4 5 6 (Biological spektra) Ch 1,6 1,7 1,1 6,4 12,6 24,4 H 59,0 38,6 61,9 62,8 60,0 43,0 G 39,3 57,9 37,0 30,8 23,7 32,6 HH — 1,7 — — — Th — — — — 3,7 — Þá vil ég að lokum leitast við að gera samanburð á gróðri tún- stæðisins fyrr og nú. Því miður nefna þeir Thoroddsen og Sigfús Jónsson aðeins fáar tegundir þeirra, sem vaxið hafa þarna á, 12

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