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Rounded flower heads Black & White Stock Photos

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Rounded flower heads Black & White Stock Photos

. A manual of weeds : with descriptions of all the most pernicious and troublesome plants in the United States and Canada, their habits of growth and distribution, with methods of control . Weeds. 206 ROSAGEAE (ROSE FAMILY) rather small, the five rounded, pale yellow petals being less than half as long as the hairy, pointed, persistent calyx-lobes which are subtended by bracts still longer; stamens many. After the flower has been fertilized the long calyx-lobes close protectingly over the cone-like heads until the many small achenes have ripened and are ready to be scattered by the swaying of Stock Photo
RMPG1J21–. A manual of weeds : with descriptions of all the most pernicious and troublesome plants in the United States and Canada, their habits of growth and distribution, with methods of control . Weeds. 206 ROSAGEAE (ROSE FAMILY) rather small, the five rounded, pale yellow petals being less than half as long as the hairy, pointed, persistent calyx-lobes which are subtended by bracts still longer; stamens many. After the flower has been fertilized the long calyx-lobes close protectingly over the cone-like heads until the many small achenes have ripened and are ready to be scattered by the swaying of
. A manual of weeds : with descriptions of all the most pernicious and troublesome plants in the United States and Canada, their habits of growth and distribution, with methods of control . Weeds. 206 ROSAGEAE (ROSE FAMILY) rather small, the five rounded, pale yellow petals being less than half as long as the hairy, pointed, persistent calyx-lobes which are subtended by bracts still longer; stamens many. After the flower has been fertilized the long calyx-lobes close protectingly over the cone-like heads until the many small achenes have ripened and are ready to be scattered by the swaying of Stock Photo
RMRD9WCB–. A manual of weeds : with descriptions of all the most pernicious and troublesome plants in the United States and Canada, their habits of growth and distribution, with methods of control . Weeds. 206 ROSAGEAE (ROSE FAMILY) rather small, the five rounded, pale yellow petals being less than half as long as the hairy, pointed, persistent calyx-lobes which are subtended by bracts still longer; stamens many. After the flower has been fertilized the long calyx-lobes close protectingly over the cone-like heads until the many small achenes have ripened and are ready to be scattered by the swaying of
. Handbook of flower pollination : based upon Hermann Mu?ller's work 'The fertilisation of flowers by insects' . Fertilization of plants. CAMPANULA CEAE 19 Conspicuousness is greatly enhanced by aggregation of the usually blue or violet flowers into rounded, ovoid, or elongated heads, and the frequency of insect-visits is generally proportional to the size of the heads. Kirchner (Jahreshefte Ver. Natk., Stuttgart, liii, 1897, pp. 219-20) has empha- sized the fact that the above description, abstracted from Hermann Miiller, only appUes to species belonging to the section Hedranthum G. Don, in w Stock Photo
RMPG29HP–. Handbook of flower pollination : based upon Hermann Mu?ller's work 'The fertilisation of flowers by insects' . Fertilization of plants. CAMPANULA CEAE 19 Conspicuousness is greatly enhanced by aggregation of the usually blue or violet flowers into rounded, ovoid, or elongated heads, and the frequency of insect-visits is generally proportional to the size of the heads. Kirchner (Jahreshefte Ver. Natk., Stuttgart, liii, 1897, pp. 219-20) has empha- sized the fact that the above description, abstracted from Hermann Miiller, only appUes to species belonging to the section Hedranthum G. Don, in w
. Handbook of flower pollination : based upon Hermann Mu?ller's work 'The fertilisation of flowers by insects' . Fertilization of plants. CAMPANULA CEAE 19 Conspicuousness is greatly enhanced by aggregation of the usually blue or violet flowers into rounded, ovoid, or elongated heads, and the frequency of insect-visits is generally proportional to the size of the heads. Kirchner (Jahreshefte Ver. Natk., Stuttgart, liii, 1897, pp. 219-20) has empha- sized the fact that the above description, abstracted from Hermann Miiller, only appUes to species belonging to the section Hedranthum G. Don, in w Stock Photo
RMRDEYW2–. Handbook of flower pollination : based upon Hermann Mu?ller's work 'The fertilisation of flowers by insects' . Fertilization of plants. CAMPANULA CEAE 19 Conspicuousness is greatly enhanced by aggregation of the usually blue or violet flowers into rounded, ovoid, or elongated heads, and the frequency of insect-visits is generally proportional to the size of the heads. Kirchner (Jahreshefte Ver. Natk., Stuttgart, liii, 1897, pp. 219-20) has empha- sized the fact that the above description, abstracted from Hermann Miiller, only appUes to species belonging to the section Hedranthum G. Don, in w
. Botany for agricultural students . Botany. .^^i Fig. 446. — The Marguer- ite, one of the Composites, showing the flowers grouped into a compact head and sur- rounded by an involucre. In this composite a head con- tains two kinds of flowers — ligulate flowers, one of which is shown at the left, and tu- bular flowers, one of which is shown at the right of the heads. After Lecomte.. Fig. 447. — Canada Thistle, showing a horizontal root and an aerial stem in flower (X|), and also show- ing single fruits or achenes, one of which is shown with- out pappus and slightly en- larged. as weeds, althoug Stock Photo
RMPG40FC–. Botany for agricultural students . Botany. .^^i Fig. 446. — The Marguer- ite, one of the Composites, showing the flowers grouped into a compact head and sur- rounded by an involucre. In this composite a head con- tains two kinds of flowers — ligulate flowers, one of which is shown at the left, and tu- bular flowers, one of which is shown at the right of the heads. After Lecomte.. Fig. 447. — Canada Thistle, showing a horizontal root and an aerial stem in flower (X|), and also show- ing single fruits or achenes, one of which is shown with- out pappus and slightly en- larged. as weeds, althoug
. Botany for agricultural students . Botany. .^^i Fig. 446. — The Marguer- ite, one of the Composites, showing the flowers grouped into a compact head and sur- rounded by an involucre. In this composite a head con- tains two kinds of flowers — ligulate flowers, one of which is shown at the left, and tu- bular flowers, one of which is shown at the right of the heads. After Lecomte.. Fig. 447. — Canada Thistle, showing a horizontal root and an aerial stem in flower (X|), and also show- ing single fruits or achenes, one of which is shown with- out pappus and slightly en- larged. as weeds, althoug Stock Photo
RMRDCXHG–. Botany for agricultural students . Botany. .^^i Fig. 446. — The Marguer- ite, one of the Composites, showing the flowers grouped into a compact head and sur- rounded by an involucre. In this composite a head con- tains two kinds of flowers — ligulate flowers, one of which is shown at the left, and tu- bular flowers, one of which is shown at the right of the heads. After Lecomte.. Fig. 447. — Canada Thistle, showing a horizontal root and an aerial stem in flower (X|), and also show- ing single fruits or achenes, one of which is shown with- out pappus and slightly en- larged. as weeds, althoug
. Botany, with agricultural applications. Botany. Fig. 446. — The Marguer- ite, one of the Composites, showing the flowers grouped into a compact head and sur- rounded by an involucre. In this composite a head con- tains two kinds of flowers — ligulate flowers, one of which is shown at the left, and tu- bular flowers, one of which is shown at the right of the heads. After Lecomte.. Fig. 447. — Canada Thistle, showing a horizontal root and an aerial stem in flower (X|), and also show- ing single fruits or achenes, one of which is shown with- out pappus and slightly en- larged. as weeds, althoug Stock Photo
RMRDTFTG–. Botany, with agricultural applications. Botany. Fig. 446. — The Marguer- ite, one of the Composites, showing the flowers grouped into a compact head and sur- rounded by an involucre. In this composite a head con- tains two kinds of flowers — ligulate flowers, one of which is shown at the left, and tu- bular flowers, one of which is shown at the right of the heads. After Lecomte.. Fig. 447. — Canada Thistle, showing a horizontal root and an aerial stem in flower (X|), and also show- ing single fruits or achenes, one of which is shown with- out pappus and slightly en- larged. as weeds, althoug
. Flower guide [microform] : wild flowers east of the Rockies. Flowers; Fleurs; Botanique; Botany. hWi. Oswego Tea: Bee Bat.m (Monarrla dklyma) is onp of our moat brilliantly colored wild flowers. It sjrows along the shady borders of woodland streams or pools where its vivid coloring is in strong contrast with the deep greens of the surrounding vegetation. The stem is hairy and rather rough; it attains heights of two feet or more. The short-st«'mmcd, broad-lance-shaped leaves are light green, sharply toothed and ratliir thin. The flowers grow in rounded terminal heads, com- posed of numerous, Stock Photo
RMRENAM8–. Flower guide [microform] : wild flowers east of the Rockies. Flowers; Fleurs; Botanique; Botany. hWi. Oswego Tea: Bee Bat.m (Monarrla dklyma) is onp of our moat brilliantly colored wild flowers. It sjrows along the shady borders of woodland streams or pools where its vivid coloring is in strong contrast with the deep greens of the surrounding vegetation. The stem is hairy and rather rough; it attains heights of two feet or more. The short-st«'mmcd, broad-lance-shaped leaves are light green, sharply toothed and ratliir thin. The flowers grow in rounded terminal heads, com- posed of numerous,
. Our early wild flowers [microform] : a study of the herbaceous plants blooming in early spring in the northern states and Canada. Wild flowers; Botany; Fleurs sauvages; Botanique. COMPOSITE FAMILY ii:' Rootslock.—Konzonial, creeping, sending up simple scaly scapes in early spring, each bearing a single flower- hcad. Leaves.—Rounded, heart-shaped, angled, or toothed, woolly when young. Flower-heads.—Radiate-composite, containing both ray and disk florets; ray-florets in several rows, narrow, pistil- late, fertile; disk-florets ster- ile; involucre nearly simple; receptacle flat; akenes cylin- Stock Photo
RMREN1F9–. Our early wild flowers [microform] : a study of the herbaceous plants blooming in early spring in the northern states and Canada. Wild flowers; Botany; Fleurs sauvages; Botanique. COMPOSITE FAMILY ii:' Rootslock.—Konzonial, creeping, sending up simple scaly scapes in early spring, each bearing a single flower- hcad. Leaves.—Rounded, heart-shaped, angled, or toothed, woolly when young. Flower-heads.—Radiate-composite, containing both ray and disk florets; ray-florets in several rows, narrow, pistil- late, fertile; disk-florets ster- ile; involucre nearly simple; receptacle flat; akenes cylin-
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