File:Farm weeds of Canada (1906) (14775869892).jpg

Identifier: farmweedsofcana00clar (find matches)
Title: Farm weeds of Canada
Year: 1906 (1900s)
Authors: Clark, George Harold, 1872- Fletcher, James, 1852-1908 Criddle, Norman Canada. Dept. of Agriculture
Subjects: Weeds Weeds Botany
Publisher: Ottawa : Published by direction of the Minister of Agriculture
Contributing Library: ASC - York University Libraries
Digitizing Sponsor: Ontario Council of University Libraries and Member Libraries

View Book Page: Book Viewer
About This Book: Catalog Entry
View All Images: All Images From Book
Click here to view book online to see this illustration in context in a browseable online version of this book.

Text Appearing Before Image:
he nature of short ridges than of low raised promin-ences as in the former species. The shape too is rather more angular, andthey are not much more than half the size. The Field Chickweed, Cerastium arvense, L., is in some places a trouble-some and persistent weed. A native form occurs abundantly throughoutthe western prairies, but gives little trouble. In some parts of Ontario,Quebec and the Maritime Provinces there is a form with smoother leaves,which produces a copious system of underground rootstocks, which enablesthis plant to become a persistent enemy. Pastures or meadows invaded byit must be broken up and cleaned by a short rotation. The flowers of theField Chickweed are large and conspicuous, more than J inch across, andborne on erect flowering stems 3 to 6 inches high. In the West the plantis sometimes grown as a garden flower for its beauty. The seed is largerthan those of the preceding Chickweeds, almost round and coarsely tuber-culate, with rounded prominences. 33 Plate 16
Text Appearing After Image:
BLADDE-R CAMPION iSilene i nf I al-a . sw/i ) I PLATE 16. BLADDER CAMPION, 5(7ene inflate. Smith. Other English names: Cow-bell, White Bottle. Other Latin names: Cucubalus Behen, L.; Silene Cucubalus, Wibel.;Silene vulgaris (Moench) Garcke; Behen vulgaris, Moench. Introduced. Perennial, with deep running rootstocks, which send upmany barren shoots, and decumbent branched flowering stems. Whole plantpale green and in the common form perfectly smooth. Stems 1 foot to 18inches high, foi-ming large tufts. Leiaves ovate-lanceolate, in pairs, meetinground the stems. Flowers white, nearly an inch across, drooping, the petalsdeeply divided. Calyx much inflated, pale green, veined with light purple,5-toothed at the contracted apex. Capsule globular-ovoid, included in thecalyx, opening by 5 short recurved teeth. Seeds (Plate 53, fig. 9—twice natu-ral size and enlarged 8 times) round-kidney-shaped, about -^V of an inch across,covered with concentric rows of small conical tubercles. The seeds o

Note About Images