PLATE

FLV-SC-04

Living Specimen

Pressed, plated, and offered for keeping

FIG. 1 —

Euphorbia trigona · Euphorbiaceae

SELECT THE PLATE TO INSPECT

DETERMINATION — FOR THE KEEPING OF

Euphorbia Trigona — Architectural Column

Euphorbia trigona · Euphorbiaceae

FURTHER PLATES — FIGS. 2 ONWARD

Turned in the hand

Each view drawn from the same specimen. Select a plate to inspect it.

Each view drawn from the same specimen. Select a plate to inspect it.

Multi-branched vertical cactiform succulent with three-winged stems, rooted in high-drainage mineral pumice and decomposed granite.

An upright, multi-columnar Euphorbia trigona rooted in a heavy mineral pumice-granite blend that prevents top-heaviness and supports rapid root-zone oxygenation.

CROSS-REFERENCE — THE PLANT ATLAS

HERB-04

Euphorbia trigona

Euphorbiaceae

Architectural cactiform succulent with trigonous winged stems, paired stipular spines, and ephemeral caducous leaves along the apical ridges.

LIGHT

Direct Sun / Full Light

WATER

Deep Drench, Complete Dry Down

HUMIDITY

25% – 50% RH (thrives in dry heated indoor air)

TEMPERATURE

15°C – 32°C (60°F – 90°F); protect from frost below 10°C

SOIL

70% mineral grit (pumice, decomposed granite, coarse sand) and 30% sifted organic compost for rapid vertical drainage.

MATURE SIZE

Floor Statement (1.0–2.5 m)

KEEPING

Effortless / Resilient

NATIVE TO

Dry rocky escarpments of Central and Southwestern Africa (Gabon to Angola)

PETS

Toxic if Ingested

Exudes pressurized white latex sap containing diterpene esters upon stem puncture. Causes dermal blistering, severe ocular inflammation on contact, and mucosal toxicity if ingested by pets or humans.

FURTHER READING — THE JOURNAL

Notes filed alongside this plate

ISS-06

ISS-06

Reduction-Fired Stoneware vs. Glazed Ceramic: Thermal & Evaporative Physics

Evaluating wall microporosity, evaporative root cooling, and salt efflorescence in Japanese Shigaraki and Tokoname vessels.

Soren Takahashi

THE HERBARIUM LETTER — FOUR A YEAR

What to repot, what to read, and what has just been accessioned.

Seasonal, unhurried, and easy to leave.

COLOPHON

Set in Inter and Newsreader, with IBM Plex Mono for specimen records. Botanical plates courtesy of Unsplash contributors.

ON THE RECORD

Pet-safety notes in the Atlas cite the ASPCA classification recorded for each species. Where no classification has been verified, the record says so.

Florivern

© 2026 FLORIVERN

INDEX OF THE COLLECTION · PLATES I–V

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