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Tired Glasswort
Salicornia pillansii
SA tree number
English: Tired Glasswort
Misapplied or old scientific names: Sarcocornia pillansii, Arthrocnemum dunense, Arthrocnemum hottentoticum, Arthrocnemum namaquense, Arthrocnemum pillansii, Arthrocnemum pillansii var. pillansii
Salicornia pillansii (formerly known as Sarcocornia pillansii), also known as Tired Glasswort, is a fascinating succulent dwarf shrub belonging to the "glassworts" or "samphires." It's a common sight in coastal salt marshes and estuarine environments, particularly valued for its ability to thrive in saline conditions. This plant forms distinctive jointed, fleshy stems, which are often the most noticeable part as its leaves are highly reduced. While its flowers are inconspicuous, its unique form makes it an interesting component of its specialised habitats.
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Distinguishing features:
Succulent dwarf shrub.
Stems are jointed and fleshy, often forming mat-like growths or low shrubs.
Leaves are highly reduced and appear as small rims or scales at the stem joints.
Tolerates saline (salty) environments.
Flowers are tiny and often inconspicuous, embedded within the fleshy stem segments.
Overall appearance:
Salicornia pillansii is a low-growing, sprawling perennial succulent that forms mat-like growths or small bushes. Its most notable feature is its segmented, fleshy, green stems that often appear leafless.
Height:
Typically 0.15 - 0.7 m high.
Width:
Forms sprawling mats.
Leaves:
Highly reduced.
Appear as small, opposite, fused scales at the stem joints.
Not prominent, giving the appearance of leafless, jointed stems.
Flowers:
Tiny and inconspicuous.
Embedded in the fleshy stem segments at the joints.
Hermaphrodite (possessing both male and female parts) or unisexual.
Perianth of 3 or 4 fleshy tepals (petal-like structures).
Typically one or two stamens.
Flowering season:
Specific flowering season for S. pillansii is not explicitly detailed in sources, but many Salicornia species flower in late summer to autumn.
Fruits:
Small, dry fruits (achenes) enclosed within the persistent perianth.
Seeds:
Typically ellipsoid with a light brown, membranous, hairy seed coat.
Stems:
Fleshy, cylindrical, and jointed.
Often upright or sprawling, forming mats.
Green, sometimes turning reddish in harsh conditions.
Soil type:
Thrives in saline, waterlogged soils typical of salt marshes, tidal mud flats, and estuarine environments.
Aspect:
Prefers full sun, common in open, exposed salt marsh habitats.
Edibility:
Salicornia pillansii is an edible type of glasswort or samphire, and is known for its salty, slightly peppery flavor.
The fleshy stems and leaves are edible, and can be enjoyed raw in salads or cooked, such as steamed, blanched, or lightly pan-fried.
The green, tender parts are generally preferred for eating, as the reddish parts can be too high in salinity and silica.
Sometimes referred to as "sea asparagus" or "sea beans".
Ecology:
Halophyte: A salt-tolerant plant, adapted to grow in high-salinity environments.
Habitat specialist: Found in specific coastal and estuarine habitats.
Bioindicator: Some Salicornia species are used as bioindicators, though Salicornia pillansii itself is noted as a "poor bioindicator" as it occurs over a broad range of physicochemical variables in salt marshes.
Distribution and habitat:
Not endemic to South Africa.
Provincial distribution in South Africa: Eastern Cape, KwaZulu-Natal, Northern Cape, Western Cape.
Major system: Freshwater (indicating estuarine/riverine influence where salinity varies).
Habitat: Forms shrubs at the upper levels of salt marshes and is found in estuarine salt marshes, tidal mud flats, and other coastal saline habitats.
Derivation of name:
The genus name Salicornia is derived from the Latin words 'sal' (salt) and 'cornu' (horn), referring to its salt tolerance and horn-like stem segments.
The species name pillansii likely honours a botanist, possibly Neville Pillans (1884–1964), a South African botanist who collected extensively in the Cape.
Interesting facts:
Salicornia pillansii is like a living succulent string of beads, with its jointed stems and almost invisible leaves!
It's a true survivor of salty places, able to thrive where most plants wouldn't dare to grow – it's a "halophyte" superhero!
While some of its relatives are famous for being eaten as "sea asparagus," this specific species is more of an unsung hero of the salt marsh, playing a vital role in its ecosystem.
Its former name, Sarcocornia pillansii, shows how botanists are constantly refining their understanding of plant relationships – it's always evolving!
Growing tips:
Planting location: Salicornia pillansii is a specialized plant best suited for gardens with saline conditions, such as coastal gardens or those with brackish water. It's ideal for replicating a salt marsh environment.
Soil and watering: It requires well-drained soil that can tolerate high salinity. It naturally grows in areas with fluctuating water levels and salt concentrations.
Aspect: Thrives in full sun.
Propagation: No specific propagation tips for Salicornia pillansii are available, but generally, glassworts can be grown from seed or stem cuttings.
This plant is a fantastic alternative for:
Common name
Scientific Name
Plant type:
Shrublet, succulent or perennial
Plant family:
Amaranthaceae (unfading) - Order: Caryophyllales