PREFACE

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[Illustration: Mimulus Lewisii Pursh. (⅔ Nat.) Red Monkey-Flower.]

Alpine Flora

of the

Canadian Rocky Mountains

By

Stewardson Brown

Curator of Herbarium Academy of Natural Sciences

Philadelphia

Illustrated with Water-Colour Drawings and Photographs

By

Mrs. Charles Schäffer

G. P. Putnam’s Sons

New York and London

The Knickerbocker Press

1907

COPYRIGHT, 1907

BY

G. P. PUTNAM’S SONS

OFFERED TO THE LOVERS OF ALPINE

FLORÆ IN THE MEMORY OF DR. CHARLES

SCHÄFFER OF PHILADELPHIA, WHO WAS

AMONG THE PIONEER BOTANISTS OF THE

CANADIAN ROCKIES, AND WHO EARLY

RECOGNISED THIS REGION AS A NEW

AND INTERESTING FIELD FOR STUDY

PREFACE

The present volume, though prepared in manual form, is meant only as

a guide to the rich and interesting flora of the Canadian Rockies and

Selkirks or those portions traversed by the Canadian Pacific Railway

between Banff and Glacier. While many of the plants herein described

are found throughout the entire region, yet the species characteristic

of the two mountain ranges are vastly different. For the most part

those of the Rockies might be characterised as plants adapted to

the withstanding of severe conditions of drouth and cold, being

mostly low and tufted, with small surfaces of leaf exposure, either

thick and leathery or in many instances with an ample covering of

protecting hairs; while those of the Selkirks, owing to the more humid

atmospheric conditions, are essentially moisture-loving forms, with a

luxuriant growth of stems and leaves; it is only where the conditions

are similar in the two regions that we find the same or similar forms

existing. Few of the more characteristic Rocky Mountain species extend

west of the divide, while of those of the Selkirks, few extend east

of it, except where there is a luxuriant forest growth, with the

consequent retention of moisture, and then only at altitudes of from

2000 to 3000 feet greater.

Contrasting the plants of this region with those of the European Alps

it is interesting to note, that while the species are for the most

part vastly different, yet there is a certain close resemblance in the

families and genera which are represented; the Anemones are here, but

not in the scarlets and crimsons, running more to whites and purples,

and so are the Buttercups, dwarf many of them, but with large, showy

flowers; the Saxifrages and Drabas are innumerable as are the Vetches

and also the Heaths, but the latter with fewer and very different

species. Some plants, however, like the White Mountain Avens (_Dryas

octopetala_), the Butterwort (_Pinguicula vulgaris_), the Moss Campion

(_Silene acaulis_), the Mountain Cranberry (_Vitis-idæa_) and the

Low Cranberry (_Oxycoccus_), the One-flowered Wintergreen (_Moneses

uniflora_), the Forget-me-not (_Myosotis alpestris_) and others are

found on both sides of the Atlantic, yet we have no such array of

Primroses or Gentians as our European brothers, though both genera are

represented with us, while on the other hand they can boast of nothing

comparable to our Indian Paint-Brush, found throughout the region on

the river shores and bars during late June and early July and later

through the summer in its innumerable forms and colours in the moist

alpine meadows and slopes.

The ferns and their allies with the more striking of the trees and

shrubs have been included in the present work, together with the

majority of the herbaceous flowering plants, though some of the largely

represented but less striking groups such as the Grasses, Sedges,

and Willows have been entirely omitted, not seeming of sufficient

general interest to warrant the space required for their intelligent

treatment. The species are arranged in accordance with their scientific

relationships, with keys to the genera and a general key to the

families. Among the illustrations herein contained, many of the plants

of the Northwest are figured for the first time.

Acknowledgment is here made to Messrs. David McNicoll, Robert Kerr, and

other officials and employees of the Canadian Pacific Railway Company

through whose courtesy was made possible the gathering of the data for

the basis of this work.

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