Flora of Dziiko/Dzukou Valley

Flora of Dziiko/Dzukou Valley PDF Author: Ashiho Asosii Mao
Publisher:
ISBN: 9788181770769
Category : Plants
Languages : en
Pages : 283

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Flora of Dziiko/Dzukou Valley

Flora of Dziiko/Dzukou Valley PDF Author: Ashiho Asosii Mao
Publisher:
ISBN: 9788181770769
Category : Plants
Languages : en
Pages : 283

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Check List of Flora of Nagaland

Check List of Flora of Nagaland PDF Author: Ashiho Asosii Mao
Publisher:
ISBN: 9788181770691
Category : Botany
Languages : en
Pages : 196

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An Introduction to Pollen Analysis

An Introduction to Pollen Analysis PDF Author: G. Erdtman
Publisher: Read Books Ltd
ISBN: 1447494768
Category : Science
Languages : en
Pages : 424

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It has long been the custom among those making pollen surveys to expose microscope slides coated with a suitable adhesive and examine them for the pollen grains caught. The counts of the various species are tabulated each day and at the end of the season drawn into a graph or pollen spectrum, as it is called , which gives a clear picture of the relative amounts of the different kinds of pollen which are floating in the air from day to day throughout the growing season If done in the north temperate zone such a spectrum will show the pollen of the early flowering trees, at first a trickle, as the junipers, alders and hazels flower, then a deluge as the birches, oaks and pines and many other trees cast their pollen to the air. This is generally followed by a long stream of grass pollen, fluctuating from week to week as the various species come into flower, reach their zenith, then die out giving way to succeeding species And toward the end of the summer pollens of the late flowering weeds make their appearance, nowadays in most places completely dominated by that of the ragweed. If the record is repeated the following year the spectrum will be nearly the same The succession can be counted on to repeat itself with subtle change from year to year for many years to come, unless some cataclysm changes the surrounding vegetation which contributes to the pollen spectrum, for it is always a faithful representation of the surrounding vegetation.

Flora of Sikkim

Flora of Sikkim PDF Author:
Publisher:
ISBN: 9788195072507
Category :
Languages : en
Pages : 564

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Flora of Gangotri National Park, Western Himalaya, India

Flora of Gangotri National Park, Western Himalaya, India PDF Author: P. K. Pusalkar
Publisher:
ISBN: 9788181770400
Category : Plants
Languages : en
Pages : 708

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Flowering Plants of India

Flowering Plants of India PDF Author: Saravanam Karthikeyan
Publisher:
ISBN: 9788181770301
Category : Angiosperms
Languages : en
Pages : 365

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Materials for the Flora of Arunachal Pradesh

Materials for the Flora of Arunachal Pradesh PDF Author: G. S. Giri
Publisher:
ISBN:
Category : Botany
Languages : en
Pages : 520

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Book Description
Contributed articles.

Flora of Tamil Nadu

Flora of Tamil Nadu PDF Author: K. Althaf Ahamed Kabeer
Publisher:
ISBN: 9788181770318
Category : Grasses
Languages : en
Pages : 525

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Balsams of Eastern Himalaya

Balsams of Eastern Himalaya PDF Author:
Publisher:
ISBN: 9788193475829
Category :
Languages : en
Pages : 215

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The Flora of Kerala: Ranunculaceae-Connaraceae

The Flora of Kerala: Ranunculaceae-Connaraceae PDF Author: P. Daniel
Publisher:
ISBN:
Category : Plants
Languages : en
Pages : 972

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