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SCROPHULARIACEAE , in botany, a naturalSee also: order of seed-See also: plants belonging to the sympetalous section of See also: Dicotyledons, and a member of the series Tubiflorae
.
It is a cosmopolitan order containing about 18o genera with about 2000 See also: species; the majority occur in temperate regions, the numbers diminishing rapidly towards the tropics and colder regions
.
About 30% of the species are See also: annual herbs, such as eyebright (Euphrasia officinalis), cow-See also: wheat (Melampyrum), and species of See also: Veronica`
Fio
.
1.—Foxglove (See also: Digitalis purpurea)
.
1, Corolla cut open showing the showing the thick axial
four stamens, rather more See also: placenta bearing numerous
than Z nat. See also: size small seeds
.
2, Unripe fruit cut lengthwise, 3, Ripe capsule split open
.
more than 6o% are biennial or generally perennial herbs and undershrubs, such as species of Veronica, mullein (Verbascum), See also: foxglove (Digitalis; fig
.
1), &c., while shrubs and trees are rare; Paulownia, a native of the mountains of See also: Japan, a See also: tree with large leaves and handsome panicles of See also: violet See also: flowers, is grown in See also: European gardens
.
The See also: stem is sometimes prostrate and creeping, as in ivy-leaved See also: toad-See also: flax (Linaria Cymbalaria) and some of the native See also: British Veronicas, but generally erect as in foxglove, figwort, mullein, &c.; a few are climbers as Rhodochiton and Maurandia
.
The See also: South See also: African genera Hyobanche and Harveya are parasites almost devoid of chlorophyll with See also: scale-like leaves; and many genera are semiparasitic, having See also: green leaves, but attaching themselves by See also: root-suckers to roots of grass, &c., from which they derive See also: part of their nourishment; such are Euphrasia, Rhinanthus, Pedicularis, &c
.
A few
genera are aquatic, e.g
.
Ambulia (old See also: world tropics), and have much Scrophulariaceae are closely allied to See also: Solanaceae (q.v.), from which divided submerged leaves and entire aerial leaves
.
The leaf-arrange- they are distinguished by the median position of the carpels, and ment varies; the leaves are alternate as in Verbascum, or theSee also: lower generally by the zygomorphic flower; Verbascum and its See also: allies, in leaves are opposite and the upper alternate as in Antirrhinum (snap-
dragon), or all are opposite (See also: Mimulus), or whorled (some Veronicas)
.
All varieties of leaf-arrangement are found in the one genus Veronica (q.v.), in some New Zealand species of which the leaves are small and appressed to the stem
.
The flowers are solitary in the leaf-axils, as in Mimulus, species of Linaria, &c., or See also: form spikes or racemes which are terminal as in foxglove, species of Veronica, &c., or axillary as in Veronica (Chamaedrys section)
.
Cymose inflorescences also occur, as in Verbascum, consisting of dichasia arranged in spikes, racemes or panicles
.
The flowers are hermaphrodite, hypogynous and zygomorphic in the median See also: plane, being often more or less two-lipped, and having five sepals joined below and persisting in the fruiting stage five petals uniting to form a corolla of very various shape, generally four stamens, the fifth (posterior) being suppressed or represented by a rudiment, while the anterior pair are longer than the posterior, and two generally equal carpels in the median plane forming a two-celled ovary containing numerous anatropous ovules on a thick See also: axile placenta, and bearing a See also: simple or bilobed See also: style (fig
.
2)
.
which the flower approaches regularity, form a connecting See also: link
.
b, Veronica. c, Verbascum
.
When a terminal flower is See also: present it becomes See also: regular as in toad-flax, where radial symmetry is produced by development of a spur to each petal—such flowers are termed peloric; all the flowers in a spike are sometimes peloric
.
In Euphrasia and many species of Veronica the posterior sepal is suppressed, and in See also: Calceolaria the anterior petals are completely See also: united
.
The form of the corolla shows See also: great variety, depending on the length and breadth of the tube—which in Veronica is almost obsolete, while in foxglove it is large and almost See also: bell-shaped—and the development of the limbs, which are spreading in Veronica, small and almost erect in figwort, or form a pair of closed lips as in Linaria and Antirrhinum
.
In Linaria the anterior petal is spurred; in Calceolaria a very See also: short See also: tube is succeeded by a two-lipped See also: limb, a smaller upper lip representing the two posterior petals and a larger, often very large, lower lip representing the three anterior petals
.
In Verbascum the five segments are almost equal, forming a nearly regular corolla; in Veronica the two posterior petals have united and the corolla is four-lobed . The approach to regularity in the corolla in Verbascum is associated with the presence of five fertile stamens, but the three posterior are generally larger than the two anterior . In Veronica, Calceolaria and other genera only two stamens are present . The anthers generally open introrsely by a See also: longitudinal slit; their form shows great variety
.
These differences in the form of the corolla, the position and length of the stamens and the form of the anthers, are associated with their See also: pollination by See also: insects which probe the flower for honey, which is secreted by a disk surrounding the See also: base of the ovary or by See also: special nectaries below it
.
Verbascum and Veronica with a short-tubed corolla represent an open type of flower with more exposed See also: nectar; in foxglove the honey is at the base of the long tube, and a bee crawling to reach it will rub with its back the anthers or stigmas which are placed on the upper See also: side of the bell
.
The closed flowers of Linaria and Antirrhinum can be visited only by insects which are strong enough to See also: separate the lips
.
In Euphrasia and others the pollen is loose and powdery, and the anthers have appendages which when touched by the See also: head of the See also: insect-visitor cause the pollen to be scattered
.
The fruit is generally a capsule surrounded at the base, or some-times as in yellow-rattle (Rhinanthus) enveloped in the persistent calyx; it opens by two or four valves, or, as in Antirrhinum, by pores
.
Occasionally it is a See also: berry
.
The seeds are generally small and numerous, rarely few and large as in Veronica
.
In Linaria Cymbal-See also: aria the fruit becomes buried by the stalks bending downwards when ripe
.
The order is divided into tribes by characters derived from the number of fertile stamens present and the form of the corolla . It is well represented in Britain by 13 genera, viz . Verbascum (mullein), Linaria (toad-flax), Antirrhinum (snapdragon), Scrophularia (fig-wort), Limosella—a small creeping annual found on edges of ponds, Siblhorpia, a small herb with creeping thread-like stems, Digitalis (foxglove), Veronica (speedwell), Bartsia, Euphrasia (eyebright), Rhinanthus (yellow-rattle), Pedicularis (louse-wort) and Melampyrum (cow-wheat) . AnSee also: American species of Mimulus (M
.
Langsdorfii) has become naturalized by See also: river-sides in many places
.
Several genera are well known in gardens; such are Calceolaria, an important genus in temperate South See also: America, Collinsia, See also: Pentstemon and Mimulus (See also: musk), also American genera
.
An anatomical, distinction is found in the arrangement of the See also: wood and bast in the stem, which is collateral, not bicollateral as in Solanaceae
.
SCRUB-See also: BIRD, the name of an Australian genus, one of the most curious ornithological types of the many furnished by that country
.
The first examples were procured between See also: Perth and See also: Augusta in West See also: Australia, and were described by J
.
See also: Gould in the Zoological Society's Proceedings for 1844 (pp
.
I, 2) as forming a new genus and species under the name of Atrichia clamosa, the great peculiarity observed by that naturalist being the See also: absence of any bristles around the gape, in which respect alone it seemed to differ from the already known genus Sphenura
.
Later, however; it was given its See also: modern name Atrichornis clamosa, and on account of the See also: discovery of its See also: peculiar sternum (made by A
.
See also: Newton) it was removed from Oscine division of the Passeres, and the See also: family Atrichornithidae in the sub-oscine division of Passeres was made for the genus, the nearest ally
West-Australian Scrub-bird (Atrichornis clamosa)
.
being the See also: lyre-bird (q.v.), now placed in the family Menuridae
.
Both the known species of scrub-bird are about the size of a small thrush—A. clamosa being the larger of the two
.
This species is See also: brown above, each feather barred with a darker shade; the throat and belly are reddish
See also: white, and there is a large black patch on the breast; while the flanks are brown and the lower tail-coverts rufous
.
A. rufescens of New South
See also: Wales has the white and black of the fore-parts replaced by brown, barred much as is the upper plumage
.
Both species inhabit the thickest " scrub " or brushwood See also: forest; but little has been ascertained as to their mode of See also: life except that the See also: males are noisy, imitative of the notes of other birds, and given to violent gesticulations
.
The See also: nest and eggs seem never to have been found, and indeed no example of the See also: female of either species is known to have been procured, whence that sex may be inferred to escape observation by its inconspicuous appearance and retiring habits
.
(A
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