Introduction
Calicium pusillum auct. is a species of lichenized fungi belonging to the family Caliciaceae. This lichen is commonly known by its scientific name and has several common names, including Tiny Button Lichen, Minute Disco Lichen, and Tiny Carpet Lichen. It is a widespread lichen species that can be found growing on substrates such as bark, wood, and rock.Description
Calicium pusillum auct. appears as a small, shiny, and smooth greenish-black disk with a diameter of less than 1 mm. The lichen is relatively thin and forms a small cushion-like structure when growing on its substrate. It has a smooth surface and is often mistaken for a pebble. The lichen lacks a distinct margin, and its thallus can range from smooth to slightly warted. The reproductive structures of the lichen are in the form of tiny, black discs called apothecia that are visible on the top of the thallus.Origin
Calicium pusillum auct. is a cosmopolitan lichen species found worldwide. It grows naturally in a range of habitats, including forests, woodlands, rocky outcrops, and subalpine regions. It is tolerant of a variety of environmental conditions, including shade, moisture, and poor nutrient availability.Uses
Calicium pusillum auct. does not have any known medicinal or commercial uses. However, it plays an important role in its local ecosystem by contributing to soil formation, water retention, and the cycling of nutrients. It is also an indicator species for environmental health, and its presence can indicate a healthy and stable ecosystem. The lichen is often used in ecology research as a bioindicator of environmental pollution due to its sensitivity to atmospheric pollutants such as sulfur dioxide and nitrogen oxides. In conclusion, Calicium pusillum auct. is a small but important lichen species found worldwide. Its tiny size belies its ecological significance as a contributor to soil formation and nutrient cycling and as a bioindicator of environmental pollution.Light requirements:
The Calicium pusillum auct. plant requires low to moderate light levels. It can survive in low-light conditions, but it prefers filtered sunlight or indirect light. Direct sunlight can stress the plant and cause damage to its leaves. It is essential to place the plant near a window, where it can receive adequate but not harsh sunlight.
Temperature requirements:
The Calicium pusillum auct. plant grows well in a temperature range of 65-75°F (18-24°C). The plant can tolerate temperatures outside of this range, but it is not for prolonged periods. Temperatures below 55°F (13°C) can cause the plant to stop growing, and temperatures above 90°F (32°C) can cause damage to its foliage.
Soil requirements:
The Calicium pusillum auct. plant prefers well-draining soil with a pH level between 6.0-7.0. The soil should be moist but not waterlogged. Overwatering can cause root rot, which can lead to the eventual death of the plant. It is best to use soil that is rich in organic matter and provides the necessary nutrients for the plant's growth.
Other requirements:
It is best to avoid exposing the Calicium pusillum auct. plant to any sudden changes in its environment, as it can cause stress to the plant. It is also important to keep the plant away from any sources of heat or cold, such as air conditioning or heating vents. Regular pruning of the plant, especially its top leaves, will help to encourage its growth and provide it with a fuller appearance.
Cultivation methods for Calicium pusillum auct.
Calicium pusillum auct. is a small-scale plant that can be cultivated with ease. It is best grown in a soil composed of peat and sand in equal proportions. The plant requires a humid environment, hence it is recommended to keep it in a terrarium or a closed jar. The plant also requires good air circulation, so ensure you leave the terrarium lid open for some time every day. The plant prefers partial shade, so it is recommended to place it in a location with diffused light.
Watering needs for Calicium pusillum auct.
The plant requires little watering, as it is sensitive to overwatering. The soil should be moist but not waterlogged. Overwatering can lead to the growth of fungus, which can ultimately damage the plant. It is better to water it sparingly, possibly twice a week. The best way to go about it is to test the soil's moisture level with a moisture meter, which can be acquired at a gardening store.
Fertilization for Calicium pusillum auct.
The plant requires minimal fertilization, as too much fertilizer can cause root burn, which will ultimately damage the plant. With this in mind, it is recommended to fertilize sparingly, once a month, with a low-nitrogen fertilizer mixture. Additionally, the use of organic liquid fertilizers is highly recommended, as it releases nutrients gradually, reducing the potential for nutrients shock.
Pruning for Calicium pusillum auct.
The plant requires minimal to no pruning, as it tends to remain small in size. However, if the plant gets leggy and too tall, it is advisable to prune the excessive growth off. Additionally, the removal of any yellowing or dead leaves is recommended, as they could harbor pests and diseases that can affect the health of the plant.
Propagation of Calicium pusillum auct.
There are two main methods of propagating Calicium pusillum auct., namely through spore propagation and vegetative propagation.
Spore Propagation
Spore propagation is the most common method of propagating Calicium pusillum auct. However, it requires careful attention to cleanliness and environmental conditions during the process. Spores can be obtained through the fruiting bodies of the plant.
The spores should be collected and then sown on a nutrient-rich substrate. The substrate should be kept moist until the spores germinate, after which they can be transferred to their final growing location. This method of propagation can take several weeks or even months to achieve successful germination.
Vegetative Propagation
Calicium pusillum auct. can be propagated vegetatively through stem cuttings or division of mature plants.
Stem cuttings should be taken from healthy and mature plants. The cuttings should be dipped in rooting hormone and then placed in soil or water until roots have formed. Once roots have developed, the cuttings can be planted in their final growing location.
Division can be done by carefully separating the roots of mature plants and planting each individual section in a suitable location. This method is best done during the early spring or late fall when the plant is in a dormant state.
Disease Management
The plant Calicium pusillum is typically resistant to most diseases. However, it may become susceptible to some fungal diseases such as leaf spot, anthracnose, and powdery mildew. The best way to manage these diseases is to ensure that the plant is grown in well-draining soil, with appropriate air circulation and water management. Additionally, plant debris and dead leaves should be removed from around the plant to prevent disease spread. Fungicides can be used as a preventive measure.
Pest Management
There are several common pests that may affect Calicium pusillum. These include spider mites, mealybugs, and scale insects. The best way to manage these pests is to keep the plant healthy and well-watered, as stressed plants are more susceptible to infestations, also, regular monitoring of the plant for signs of pest infestations can prevent the problem from getting out of control. In cases of infestation, spraying the plant with an insecticidal soap or neem oil can be effective in controlling the pests. It's important to check the label and directions of the product and, if in doubt, to consult with a gardening professional or expert.
