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Ephedra is a genus of gymnosperm shrubs. The various species of Ephedra are widespread in many arid regions of the world, ranging across southwestern North America, southern Europe, northern Africa, southwest and central Asia, northern China and western South America. [2] It is the only extant genus in its family, Ephedraceae, and order ...
It is dioecious, with male and female flowers on different plants. The flowers have three small white petals; male flowers have 4.5–5 mm petals and nine stamens, female flowers have 2–3 mm petals and three fused carpels. The fruit is an ovoid capsule, about 6 mm long containing several seeds that ripen underwater. The seeds are 4–5 mm ...
The most primitive flowers are thought to have had a variable number of flower parts, often separate from (but in contact with) each other. The flowers would have tended to grow in a spiral pattern, to be bisexual (in plants, this means both male and female parts on the same flower), and to be dominated by the ovary (female part). As flowers ...
The pistillate (female) flowers are also without calyx or corolla, and consist of a single ovary accompanied by a small, flat nectar gland and inserted on the base of a scale which is likewise borne on the rachis of a catkin. The ovary is one-celled, the style two-lobed, and the ovules numerous.
Plant reproductive morphology. Plant reproductive morphology is the study of the physical form and structure (the morphology) of those parts of plants directly or indirectly concerned with sexual reproduction. Among all living organisms, flowers, which are the reproductive structures of angiosperms, are the most varied physically and show a ...
The flowers are pale green or yellow (rarely white), with an orange band on the tepals; they yield large quantities of nectar. Flowers: May. Perfect, solitary, terminal, greenish yellow, borne on stout peduncles, 40–50 mm (1 + 1 ⁄ 2 –2 in) long, cup-shaped, erect, conspicuous. The bud is enclosed in a sheath of two triangular bracts which ...
Flowers are solitary, bisexual, radial, with a long pedicel and usually floating or raised above the surface of the water, with girdling vascular bundles in receptacle. [ 10 ] [ 11 ] Some species are protogynous and primarily cross-pollinated, but because male and female stages overlap during the second day of flowering, and because it is self ...
Grass-of-parnassus Parnassia palustris (Cumberland and Sutherland) Pasqueflower Pulsatilla vulgaris (Cambridgeshire and Hertfordshire) Common Poppy Papaver rhoeas (Essex and Norfolk) In addition, Sticky Catchfly Lychnis viscaria was chosen for both Edinburgh and Midlothian, the county containing Edinburgh.