. Plants and their ways in South Africa. Botany; Botany. 230 Plants and their Ways iti South Africa Maiden Hair and most of the South African ferns have short creeping stems, but Cyathea of Natal, and the beautiful Hemitelia, of Knysna and the West, have woody stems which grow to quite a height. On the under side of most fern leaves you will find brown spots. Some people cut their ferns down and burn them when they find them there, thinking that they are scale insects. When the spots get quite brown, gently shake a leaf over white paper. A brown dust will appear on the paper. These. Fig. 204.—
. Plants and their ways in South Africa. Botany; Botany. 230 Plants and their Ways iti South Africa Maiden Hair and most of the South African ferns have short creeping stems, but Cyathea of Natal, and the beautiful Hemitelia, of Knysna and the West, have woody stems which grow to quite a height. On the under side of most fern leaves you will find brown spots. Some people cut their ferns down and burn them when they find them there, thinking that they are scale insects. When the spots get quite brown, gently shake a leaf over white paper. A brown dust will appear on the paper. These. Fig. 204.—Longitudinal section ttirough the sporophyte of Peiiia epiphyUa^ R, rhizoids ; I, involucre ; F, foot of sporophyte ; Se, seta ; C, capsule ; W. wall of capsule ; Wa, wall of archegonium ; S, spores ; N, remains of neck of archegonium ; A, unfertilized archegonium (highly magnified). (From Evan's " Intermediate Book of Botany".) are the fern spores, contained within clusters of spore-cases forming the dots. A dot is called a sorus (plural, sori). When the spores are ripe and have fallen in moist places, they burst their brown walls and begin to grow. In a few weeks a spore will grow into a filmy, green, heart-shaped plant. Look under the shelves of greenhouses or on the outside of pots in which ferns are growing. They are often abundant there. People call them "Moss," but we know that moss leaves are borne on stems. Each one of these plants grows by itself. How Does the Fern Plant Come ?—On the under side of the plants which are called prothallia are rhizoids and. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Stoneman, Bertha. London, New York, Longmans, Green
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1915
