Philodendron spiritus-sancti

Where it comes from

Espírito Santo, in south-eastern Brazil, and the name says so. Kew’s range field is coarser than that — it gives only “Brazil Southeast”, which is a standard region rather than a statement about this plant¹ — but Kew’s own description and the Brazilian literature both put it in Espírito Santo, in Atlantic Forest, at somewhere between 600 and 1,000 m.²³ The altitude figures disagree: 650 m on Kew’s page, 800 m on the type sheet, 1,040 m on a 1986 collection. The range is the honest answer.

Now the number everyone repeats, because it is the reason this plant is famous: that six plants survive in the wild. No assessment body, herbarium, botanic garden or paper says that. The two pages that state it cite nothing, and no Portuguese-language source gives any such figure at all.

What is actually published counts populations rather than individuals. Three were known until 2023. A fourth was found in February 2024 — traced from an iNaturalist observation, 128 km from every previous record, growing on a rock face in the Monumento Natural da Serra das Torres — and the paper reporting it recorded at least fifty well-developed individuals and many seedlings at that site alone.⁴ GBIF holds 110 occurrence records for the species.⁵ It is genuinely rare and genuinely threatened. It is not down to six.

The status is Brazilian rather than global. CNCFlora assessed it Endangered in 2012 on an extent of occurrence of 526 km²;⁶ it is Endangered on the federal list and Critically Endangered on Espírito Santo’s state list — Portaria MMA 148/2022 and Portaria IEMA 07-N/2021 respectively, both cited in the 2024 Brazilian review.⁴³ The IUCN has never evaluated it.⁴ Kew’s page shows a legacy “Data Deficient” note and a machine-generated threat prediction; neither is a Red List category.¹

Naming and description

Philodendron spiritus-sancti G.S.Bunting, published in Phytologia 61: 441 (1987).¹⁷ No synonyms. The epithet is the state — Espírito Santo, the Holy Spirit. I could not read Bunting’s own text to confirm he says so; Phytologia volume 61 is not in the openly readable scans, so the etymology here rests on a specialist source and on the plain fact of the endemism rather than on the description itself.⁸

The leaf is why it is wanted: very long, very narrow, triangular and hanging almost vertically, on a climbing stem. The botanical description gives blades of 57–63 cm;² a Brazilian botanic garden says up to a metre.⁹ Herbarium sheets are pressed from what fits on a sheet, so treat 63 cm as a measurement rather than a ceiling.

One naming note, since it is everywhere in listings: this is a species, so it is Philodendron spiritus-sancti in italics. Written as “Philodendron ‘Spiritus Sancti’” it claims to be a cultivar, which it is not.

Fun facts

• The famous number is folklore, and tracing it is instructive. “About six left in the wild” appears on page after page, always without a citation, and the only published count of individuals — fifty-plus at one newly found site in 2024 — points the other way.⁴ The species is Endangered nationally and Critically Endangered in its own state;⁶ it does not need the invented figure to be worth protecting, and the invented figure is the kind of thing that makes people discount the real assessment.
• The plant was found again by somebody posting a photograph. The fourth population was located because an iNaturalist observation was spotted and followed up by botanists.⁴ A casual upload extended the known range of one of Brazil’s most threatened aroids by 128 km.
• Collectors can propagate it and science cannot. The 2024 Brazilian review states plainly that researchers do not have a germination protocol for the species, while the plant is routinely multiplied in the trade.³ Cultivated stock traces back to vouchered material from the living type plant on Roberto Kautsky’s land.³ A plant can be simultaneously commonplace in glasshouses and nearly gone from the forest, and this is the clearest example of it on this site.
• What actually threatens it is contested, and the two accounts differ by date. The 2012 assessment is a habitat-loss assessment — a small range on unprotected private land.⁶ The 2024 papers make the case for overexploitation, intensified during the pandemic, with material taken from wild mother plants circulating among collectors.³⁴ Both are real; they describe different periods.