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Gasteria nitida (Bathurst Gasteria)

Gasteria nitida (Bathurst Gasteria)


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Scientific Name

Gasteria nitida (Salm-Dyck) Haw.

Common Names

Bathurst Gasteria

Synonyms

Gasteria nitida var. nitida, Aloe decipiens, Aloe elongata, Aloe nitida, Aloe obtusa, Aloe trigona, Gasteria beckeri, Gasteria decipiens, Gasteria obtusa, Gasteria stayneri, Gasteria trigona, Haworthia nigricans, Haworthia nitida

Scientific Classification

Family: Asphodelaceae
Subfamily: Asphodeloideae
Tribe: Aloeae
Genus: Gasteria

Description

Gasteria nitida is a succulent plant with fat, shiny, spotted, triangular leaves that usually (but not always) grow as a rosette. The species name "nitida" means "shiny" in Latin, and refers to the leaf surfaces. The plant is acaulescent (without a stem) and some plants proliferate from the base to form offsets and clumps. It is highly variable and plants' appearance depends very much on the environment. The flowers are a darker reddish pink, with yellow throats. The inflorescence is branched, and flowering time is in summer. Juvenile plants look markedly different to adults. Young plants are distichous (leaves only in two opposite rows), while adults are often rosettes. Juvenile leaves are tongue-shaped and recurved, while adults leaves are more upright and triangular. Juvenile leaves are rough with tubercles, while adult leaves are smooth and shiny.

Hardiness

USDA hardiness zone 9b to 11b: from 25 °F (−3.9 °C) to 50 °F (+10 °C).

How to Grow and Care

Gasteria are often grouped with Haworthia because the plants have similar cultural requirements. Both are attractive, small succulents that can tolerate somewhat more shade than many succulents, which makes them more suitable as houseplants. Gasteria are susceptible to fungal infections, which usually appear as black spots on the leaves. These are the result of too much humidity or water on the leaves, but they should not spread too quickly. Gasteria have a natural defense mechanism against such fungal attacks and attack the invading organism and seal off the wounded spot. In general, any place where Haworthia and Aloe thrive will be hospitable to a Gasteria.

Gasteria are small, shallow-rooted, and relatively slow-growing. They are often grown in small clusters in wide, shallow dishes. Over time, clusters will naturally enlarge as the mother plant sends off small plantlets… – See more at: How to Grow and Care for Gasteria

Origin

Native to the Eastern Cape grasslands of South Africa.

Varieties

  • Gasteria nitida var. armstrongii
  • Gasteria nitida var. armstrongii 'Variegated'

Links

  • Back to genus Gasteria
  • Succulentopedia: Browse succulents by Scientific Name, Common Name, Genus, Family, USDA Hardiness Zone, Origin, or cacti by Genus

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Gasteria nitida

Common names: Bathurst ox-tongue Bathurst-beestong (Afr.)

Introduction

Gasteria nitida is a medium-sized, aloe-like succulent, endemic to the Eastern Cape, growing in grassland regions. It has showy, banded leaves, and grows well in containers or on a rockery.

Description

Description

The plants are stemless (acaulescent), decumbent to erect, 60–200 mm tall, 50–280 mm in diameter, solitary or proliferating from the base to form small groups. The roots are succulent, up to 12 mm in diameter and gradually dilating from the tip upwards.

The juvenile leaves are in two opposite rows (distichous), becoming spirally twisted in a rosette. The adult leaves are triangular spear-shaped (triangular-lanceolate), rarely spear-shaped, ascending, 16–180 mm long, 25–80 mm broad at the base upper surface channeled, the lower surface somewhat rounded but with a distinct off-centric keel. Both surfaces are smooth and shiny, dark green, with faint to dense, white spots arranged in irregular transverse bands. The leaf margin is entire but can sometimes be indistinctly tuberculate. The leaf tip is acute with a white tubercle. The juvenile leaves have a tuberculate leaf surface.

The inflorescence is an ascending lax panicle, 200–1200 mm long, up to 500 mm in diameter. The young plants often have a simple raceme. The flower stalks (pedicels) are 7–8 mm long and pendent. The flowers are 20–25 mm long, bright reddish pink, the basal portion swollen (5–8 mm in diameter), the tube 4–5 mm wide. The stamens do not protrude. The style is 13–15 mm long, with a minute stigma. The fruiting capsule is 24–30 mm long, 8 mm in diameter containing black seeds 3–4 mm long, 2 mm wide.

Gasteria nitida is related to Gasteria excelsa from the Eastern Cape. The latter a much larger species usually confined to cliffs or shady regions, with longer, less spotted leaves (sharp margin) and a dense, large, many branched inflorescence up to 2 m tall.

Conservation Status

Status

It is only known from the Port Elizabeth, Bathurst and Grahamstown disticts of the Eastern Cape. It is still fairly common, and consequently has not been taken up in the Red List of South African plant species (Raimondo et al. 2009).

Distribution and habitat

Distribution description

Gasteria nitida is widely distributed in the south-eastern Cape coastal regions, from south-east of Uniondale in the west, to near the Great Fish River mouth in the east, and inland as far north as Grahamstown, up to an altitude of approximately 1 000 m. It is frequently associated with mineral-poor, slightly acidic, quartzitic sandstone soils of the Cape Supergroup, with a pH of 5.4–5.6, which include the Table Mountain Group, as well as Witteberg Group. The plants occur singly, or in small groups, in full sun or light shade, in Kouga Grassy Sandstone Fynbos and also grassland (Bisho Thornveld). They usually grow in a rocky terrain, and when not in flower they are difficult to detect. The climate is hot in summer and mild in winter. Frost, if it occurs, is slight. Annual rainfall of 600 and 800 mm is in summer and winter, but there is a tendency for summer dryness.


Plants in their natural habitat, between Hankey and Loerie, occurr on an open hillside with a northerly aspect. consists of shrubs 1.0–1.5 m tall , Shrubs in their habitat including, Dicerothamnus rhinocerotis, Passerina rigida, Pteronia incana, Leucadendron salignum, Protea neriifolia, Metalasia muricata and a species of Agathosma. G. nitida was observed in full sun as well as light shade. East of Bathurst, plants were observed in open grassland on a hilly terrain among quartzitic sandstone rocks, growing together with Crassula perfoliata var. minor, Bulbine frutescens, Corpuscularia sp., Crassula nudicaulis and Hawortiopsis reinwardtii. (Haworthia was recently divided into 3 genera Haworthiopsis, Haworthia and Tulista (Published by John Manning)

Derivation of name and historical aspects

History

The specific Latin epithet ‘nitida’ pertains to its shiny leaf surface (‘nitidus’ = shiny). G. nitida was first collected at the Cape by Hendrik Swellengrebel, second son of Hendrik Swellengrebel who was Governor at the Cape from 1739 to 1751. Although he was born in the Cape in 1734, he settled in the Doorn, a province of Utrecht, Holland. (Gunn & Codd 1981). He had a keen interest in South African plants, which he grew on his estate Schoonoord. He visited the Cape in 1776–1777 and collected the plants presumably in the Langkloof in 1776 on his second expedition to the Eastern Cape. In 1790 he donated seeds of this species to the Botanic Gardens of Utrecht (Berger 1908).
In 1817, Prince Salm-Dyck first named this species as Aloe nitida from live plants in his succulent collection. Later in 1827, the succulent botanist Haworth transferred it to its rightful place in the genus Gasteria.

Ecology

Ecology

It is pollinated by sunbirds and the seeds, which are borne on the elongated inflorescence as with most Gasteria species, are clearly wind-dispersed. Seeds ripen in late summer and autumn co-inciding with the rainy season. Like many other Gasteria species, its leaves are brittle and will form roots and grow when they fall to the ground.

Although fires are frequent where the plants occur, the plants are well adapted to these conditions after fire usually the centres of the plants remain intact, and only the upper portion of the leaves are scorched, after which the plants recover rapidly.

Plants are grazed by livestock.

The plants are not used medicinally, but are used in horticulture.

Growing Gasteria nitida

Gasteria nitida is a fairly slow-growing, attractive plant with horticultural appeal. It is easily propagated by division, offshoots, leaf cuttings or seed. If grown in shady conditions, the leaves tend to be longer and greener, as opposed to plants growing in full sun, bearing much shorter, compact leaves. Plants prefer a mineral-poor slightly acidic soil.

Gasteria nitida adapts well in cultivation and does best in rockeries or grown as a pot plant. It is best grown in coastal grassland gardens (Van Jaarsveld 2010), or similarly dry Mediterranean-type gardens in other parts of the world, where frost is not too severe. Plants are adapted to grow in full sun and should reach flowering size in about 3 years. To obtain pure seed, it is best to cross-pollinate two individuals. This can be accomplished using a sharpened match stick to transfer the pollen from a genetically different plant of the same species to the stigma, thereby ensuring that the species breeds true.

Propagation
Gasteria nitida seed should be sown preferably during the warmer months in a shady position. Cover with a thin layer of slightly acidic sand, and keep moist. Germination is usually within 3 weeks. Seedlings grow slow and are best planted out when large enough to handle. Propagation from leaf cuttings is best undertaken in spring. Allow the leaf cutting to form a heel by placing it on a dry window sill for a week or three. Cuttings are best rooted in a small container in a well-drained medium. Once rooted, plantlets would appear at the base of the leaf, and these can be detached once they are strong and large enough to handle. Best to feed plants with an organic feeding (compost or any other liquid fertilizer). Gasteria nitida can be watered at any time of the year, however, should be reduced during winter.

References

  • Mucina, L. & Rutherford, M.C. 2006. The vegetation of South Africa, Lesotho and Swaziland. Strelitzia 19. South African National Biodiversity Institute, Pretoria.
  • Van Jaarsveld, E.J. 1994. Gasterias of South Africa. Fernwood Press, Vlaeberg.
  • Van Jaarsveld, E.J. 2007. The genus Gasteria, a synoptic review. Aloe 44, 4: 84–103
  • Van Jaarsveld, E.J. 2010. Water wise gardening. Struik, Cape Town.
  • Raimondo, D., Von Staden, L., Foden, W., Victor, J.E., Helme, N.A., Turner, R.C., Kamundi, D.A. & Manyama, P.A. (eds) 2009. Red list of South African plants. Strelitzia 25. South African National Biodiversity Institute, Pretoria.

Credits

Ernst van Jaarsveld

Kirstenbosch National Botanical Garden


Gasteria nitida (Bathurst Gasteria) - garden

Origin and Habitat: Restricted to a comparatively limited coastal region mainly in and around Humansdorp, Eastern Cape Province.
Habitat: grows on a rocky soil with conglomerate or quartzite sandstone, this plant can be exceedingly difficult to locate in habit in fact the leaves are more or less horizontal and when the whole plant is at or below grade, the surrounding soil begins to cover up the plant!

Description: Gasteria armstrogii is a distinctive neotenic miniature succulent with short, rounded and thick distichous rosettes of two to four leaves up to 10 in diameter. Old specimens cluster naturally with new plants around the original. It is very slow growing.
Stem: Acaulescent.
Roots: Thick, fusiform and succulent up to 12 mm in diameter, with little branching, and endowed with the ability to contract, physically pulling the plant down into the ground during dry weather.
Leaves: Distichous (grow in two planes only), dark green to nearly black that can take maroon-red colouring in full sun, very strong, compact and thick that lie flat to the ground and have a rough, bumpy, tongue-like appearance, leaves in nature rarely more than 60 mm in overall length. Sometimes with prominent paler tubercles or warts that may develop with age. Tip somewhat retuse, obtuse or truncate. Margin entire or slightly tuberculate. Often the leave has a deep V-shaped proximal depression.
Flower: The inflorescences are smaller up to 50 cm tall and unbranched but bear 20 mm long flowers. Flowers 20-25 mm long, pinkish-red, stomach-shaped for about half of the perianth length. Perianth tips yellowish-green.
Blooming season: Summer.
Fruits: Oblong about 25 x 8 mm wide.

Subspecies, varieties, forms and cultivars of plants belonging to the Gasteria nitida group

Notes: Gasteria armstrongii has for a long time been just considered a "kind" of nitida (Gasteria nitida var. armstrongii) but it is very different indeed from the typical Gasteria nitida. Nowadays the taxonomist Ernst van Jaarsveld has decided, by virtue of DNA studies, that armstrongii is a species in its own right. Seedlings of Gasteria nitida appear much the same until they produce erect pointed leaves.
This specie has been widely selected and hybridized and nowadays many clones are available most of which were developed in Japan.

Bibliography: Major references and further lectures
1) Van Jaarsveld, E.J. “Gasterias of South Africa.” Fernwood Press. 1994
2) Urs Eggli “Illustrated Handbook of Succulent Plants: Monocotyledons” Springer, 2001
3) Stuart Max Walters “The European Garden Flora: Pteridophyta, Gymbospermae, Angiospermae-Monocotyledons” Cambridge University Press, 1984
4) Mucina, L. & Rutherford, M.C. (eds) 2006. “The vegetation of South Africa, Lesotho and Swaziland.” Strelitzia 19. South African National Biodiversity Institute, Pretoria.
5) Van Jaarsveld, E.J. “The genus Gasteria, a synoptic review.” in: Aloe 44: 4: 84–103 2007
6) Ernst Van Jaarsveld, Ben-Erik Van Wyk, Gideon Smith “Succulents of South Africa: A Guide to the Regional Diversity” Tafelberg Publishers, Limited, 01/lug/2000


Gasteria nitida var. armstrongii Photo by: Valentino Vallicelli
Gasteria nitida var. armstrongii Photo by: Valentino Vallicelli
Gasteria nitida var. armstrongii Photo by: Valentino Vallicelli

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Cultivation and Propagation: They are slow growing but long-lived plants of easy culture which makes them a good houseplant and can be an excellent subject for the beginning gasteriaphile (it can grow easily on window sills, verandas and in miniature succulent gardens where they are happy to share their habitat with other smaller succulent plants, or in outdoor rockeries) Need light shade to shade, but will take full sun part of the day. (with some sun exposure the leaf develops a nice reddish tint and remain compact) They are tolerant of a wide range of soils and habitats, but prefer a very porous potting mix to increase drainage. During the hot summer months, the soil should be kept moist but not overly wet. The plants are fertilized only once during the growing season with a balanced fertilizer diluted to ½ the recommended strength. During the winter months, water only when the soil becomes completely dry. Frost hardy to -1°C (Or less).
***Propagation:**Gasteria a is easily propagated by the removal of offshoots or by leaf cuttings in spring or summer. To use offshoots It should stay intact in the post though every head will have its own root system and it could easily be split for propagation.
To propagate by leaf cuttings, remove a leaf and let it lie for about one month (e.g. in a cool window sill), giving the wound time to heal. Then lay the leaf on its side with the basal part buried in the soil. This leaf should root within a month or two, and small plants will form at the leaf base. Young plants can be harvested the following season. They can also grown from seed. Seed should be sown during summer in sandy well drained soil and preferably protected from full sun. The seedlings are slow growing and can be planted out in small containers when they are large enough to handle. The soil should preferably be enriched with compost. They react very well to a liquid organic fertilizer.


Watch the video: Propagating Gasteria - How To remove Gasteria Pups