Archive of Vanished Flora
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Scattered-kin Herb Radix dispersa tschadensis
Specimen · N°043 · Water · ▶ Film

Radix dispersa tschadensis

Flowers that bloom apart may, at the bottom of the earth, be one.

FOUND 13.2°N 14.5°E · Eastern shore of Lake Chad, Central Africa  ·  ✝ EX · Last seen 1995

The Scattered-kin Herb is a plant some 20 cm tall, rising from cracked dry mud. It spreads low olive spatulate leaves veined in pale lines, and on a long light red-brown stem bears a single dull amber star-shaped flower with a dark centre. Above ground the plants stand far apart; deep below, an old single root is thought to run sideways, pushing up shoots at a distance from its second storey. It sprouts only in years when the lakeshore has retreated; when the water returns, the plants above ground vanish, and the root alone waits under the dry mud for the next retreat. Whether the separate-seeming plants are in truth one individual, no one has yet been able to confirm.

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Portrait

Vertical, as filmed / tap to play
FULL FILM · also on social

“One herb that blooms apart”

This footage was made vertical (9:16) and is also published on social media. The archive keeps it in its original ratio.

9:16 VERTICALFULL EDITSOUND ON
Narration
0:00 / --:--
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Specimen Plates

8 plates · hover to enlarge
Scattered-kin Herb plate 1PLATE I
Scattered-kin Herb plate 2PLATE II
Scattered-kin Herb plate 3PLATE III
Scattered-kin Herb plate 4PLATE IV
Scattered-kin Herb plate 5PLATE V
Scattered-kin Herb plate 6PLATE VI
Scattered-kin Herb plate 7PLATE VII
Scattered-kin Herb plate 8PLATE VIII
ARCHIVAL PRINTThis specimen is available as a printable plate: Illustrated edition — Etsy ↗ · Photographic edition — Etsy ↗
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Field Note

Habitat
Eastern shore of Lake Chad, Central Africa. Only in years when the shoreline retreats by kilometres does it appear — dotted far apart across the exposed grey-brown cracked silt.
Local name
One herb that blooms apart
Folklore
Locally, a year when the Scattered-kin Herb blooms widely scattered is known as a year the lake drew far back, and it has been said that the distant plants are joined at the bottom of the earth.
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Locator

Coordinates
13.2°N 14.5°E
Eastern shore of Lake Chad, Central Africa
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Record

Flowers that bloom apart may, at the bottom of the earth, be one.

No one has ever seen where one of them ends.

The eastern shore of Lake Chad, Central Africa.

Only in a year when the lake retreats by kilometres does the cracked mud appear.

There, dotted far apart, the Scattered-kin Herb sprouts on the dry grey-brown ground.

Far apart above ground — yet deep below, one old root joins them.

MoreFull specimen data — classification, scientific name, etymology
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Classification

Classification & specimen data
Scientific name
Radix dispersa tschadensis  Y. Aoki, 1992
Taxonomy
Plantae › Angiosperms › Dicotyledons › RadixalesRadixaceaeRadix › dispersa
Voucher
AVF-043 · Holotype
Archive of Vanished Flora (AVF)
Conservation
✝ EX — Extinct Last seen 1995
Collector
N. Drei
1989-08-05
Synonym
Radixopsis dispersa T. Okabe, 1987
Protologue (Latin)
Herba perennis, rhizomate tenui, foliis linearibus, inflorescentia pauciflora. Typus: Eastern shore of Lake Chad, Central Africa. Species iam extincta.
Discovered / Described
1989 / 1992
Height
20cm
Life form
Perennial herb
Phyllotaxy
Alternate
Chromosome
2n = 28
Flowering
The season after disturbance (eruption/fire)
Pollination
Small flies and wasps
Substrate · pH
Gravelly, near-neutral
Elevation
200〜1,200 m
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Etymology

Etymology of the name
RadixGENUS
The etymology is not recorded.
dispersaEPITHET
The etymology is not recorded.

Addenda

later field notes
2026-06-24 · Years of Fruiting

In most years, Radix dispersa tschadensis raises its flower and withers without swelling into fruit. It merely sends another shoot from the old buried root, so the stand appears to increase without truly multiplying. Yet in years when the lake’s retreat lasts beyond two rainy seasons, small capsules remain at the base of the dull amber flower. The plant seems self-compatible when visitors are scarce; ripe seeds fall into mud cracks and rest there until the clay closes again.

2026-06-24 · Low-Flying Visitors

The flower is not brightly colored, but on dry lake mud its muted amber stands out more than expected. By day, small bees and flies moving close to the ground would pause briefly on the star-shaped disk, brushing their bodies against the dark center. The long stalk does not seem built to resist wind; rather, it lifts only the flower above the shadows of the cracks and into a low flight path.

2026-06-24 · A Plant for Reading Water

Fishers and herders on the eastern shore read the spacing of this plant as a memory of water level. In years when its shoots appear sparsely over a wide distance, both the boat landing and the moist grazing ground have moved farther away. The name “one grass blooming apart” speaks not only of a connected root, but also of a life in which the lake’s retreat was measured by walking it.

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Related

Specimens of the same habitat
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