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Desert ephemerals are plants which are adapted to take advantage of the short wet periods in arid climates. Mud-flat ephemerals take advantage of short periods of low water. In areas subjected to recurring human disturbance, such as plowing, weedy ephemerals are very short-lived plants whose entire life cycle takes less than a growing season .
Rhanterium epapposum is a plant of the family Asteraceae. [1] Native to the deserts of the Arabian Peninsula including Kuwait, Saudi Arabia and Qatar where it is known locally as arfaj (Arabic: عرفج). [2] The arfaj consists of a complicated network of branches scattered with small thorny leaves and bright yellow flowers about 1.5 cm wide.
Plants absorb water from the soil, which then evaporates from their shoots and leaves; this process is known as transpiration.If placed in a dry environment, a typical mesophytic plant would evaporate water faster than the rate of water uptake from the soil, leading to wilting and even death.
The diversity of climatic conditions, though quite harsh, supports a rich array of habitats. Many of these habitats are ephemeral in nature, reflecting the paucity and seasonality of available water. [1] Woody-stemmed shrubs and plants characterize vegetation in these regions. Above all, these plants have evolved to minimize water loss.
It is found primarily in dry desert environments. It is a dioecious shrub, usually less than 1 meter in height. This shrub has rigid and branched stems. This desert plant species does not possess spines and is non-succulent. The leaves are very short (about 3-6mm) and are united toward the base of the plant, forming leaf sheaths.
Pterostylis xerophila, commonly known as the desert greenhood, is a plant in the orchid family Orchidaceae and is endemic to South Australia. Both flowering and non-flowering plants have a relatively large rosette of leaves. Flowering plants also have up to eight translucent white, green and reddish-brown flowers with an insect-like labellum.
Increasingly frequent and severe heat waves in the Southwest are damaging some desert plants known for thriving in harsh conditions. Saguaro cacti and agave have both suffered in sweltering ...
Selaginella lepidophylla is a true resurrection plant that can revive and regain metabolic function after a period of extreme desiccation. Anastatica hierochuntica is not a resurrection plant, but rather a tumbleweed also capable of repeated expansion and retraction, which superficially resembles revival.