The name says it all. Cupidus — Latin for “desirable,” “highly attractive,” “coveted.” When R.A. Dyer described this compact, blue-leaved cycad from the Mpumalanga escarpment in 1971, he chose an epithet that would prove tragically prophetic. Encephalartos cupidus is desirable. It is the perfect collector’s cycad: small enough for a pot, blue enough to stop traffic, armed with sharp-toothed leaflets that give it a fierce beauty, and rare enough to confer status on anyone who owns one. These are exactly the qualities that have driven it to the edge of extinction. This Encephalartos has been confirmed extinct in Limpopo Province (2004) and survives only in small remnant populations in Mpumalanga — fragments of what was once a wider distribution, stripped down by decades of relentless poaching.
Taxonomy and nomenclature
Encephalartos cupidus R.A.Dyer was described in 1971 in Bothalia by Robert Allen Dyer, one of the most important South African botanists of the 20th century. The epithet cupidus (Latin: desirable, covetous) was intended to reflect the plant’s horticultural appeal. It was a prescient choice — the species’ desirability has been its undoing.
The species belongs to the northern blue complex of Encephalartos, related to Encephalartos eugene-maraisii, Encephalartos middelburgensis, and Encephalartos dolomiticus. It is distinguished from all related species by its dwarf, subterranean habit (trunk rarely visible above ground), combined with strongly toothed leaflet margins (3–6 spines per side) and bright apple-green cones that turn yellowish at maturity — a cone colour unlike the reddish-brown or olive cones of the taller northern blue species.
Common names: Blyde River cycad (English).
Morphological description
Habit and caudex: Encephalartos cupidus is a dwarf, multi-stemmed cycad — one of the smallest species in the genus. The stem is mostly subterranean, rarely projecting more than 20–30 cm above ground level, though developed stems can reach up to 2.7 m in length when procumbent underground. The diameter is 15–30 cm. The species suckers prolifically — 10–15 suckers per stem is typical — creating dense, multi-headed clumps of blue-green rosettes emerging from ground level. This compact, suckering habit is the species’ most distinctive horticultural feature: a cluster of blue-green crowns at ground level, creating a sculptural mass of colour and texture that works brilliantly in containers or as a focal point in a rock garden.
Leaves: Fronds are 0.5–1.0 m long, rigid, straight with a slight recurve at the tip. The colour is a distinctive dull blue-grey to glaucous blue-green (described as “venetian blue” in some sources), with both leaf surfaces approximately the same colour. The leaves of young plants are bluer; mature leaves develop a more yellowish-khaki tone. Leaflets are inserted in a V-disposition on the rachis, leathery, 10–15 cm long and 1–2 cm wide. The key diagnostic: the leaflet margins are strongly armed with 3–6 pungent teeth on both sides — more teeth per leaflet than the smooth-margined or weakly toothed northern blues (eugene-maraisii, middelburgensis). The leaflet apex is sharply pointed. Basal leaflets decrease in size to a series of spines along the petiole.
Reproductive structures: Both male and female plants produce usually a single cone per stem per season — a modest output reflecting the species’ small size. Cones are a distinctive bright apple-green, becoming more yellowish at maturity. Male cones are subcylindrical, 18–30 cm long and 5–8 cm in diameter, on a peduncle 5–10 cm long. Pollen is shed from January to March. Female cones are ovoid, 18–20 cm long and 12–14 cm in diameter. Female cones disintegrate from May to July to release approximately 120 seeds per cone. The green cone colour is a useful diagnostic — it distinguishes cupidus from the reddish-brown cones of middelburgensis and the olive-brown cones of eugene-maraisii.
Distribution and natural habitat
Encephalartos cupidus occurs within a restricted area of the Mpumalanga Drakensberg escarpment, between the Blyde and Steelpoort Rivers. Historical distribution included populations in Limpopo Province as well, but these were confirmed extinct by 2004. The species now survives only in small, fragmented remnants in Mpumalanga.
The habitat is steep, rocky slopes, cliff ledges, and open grassland at elevations of 700–1500 m on the Lowveld escarpment. Plants grow in full sun, on well-drained rocky substrate, often in very exposed positions where the subterranean stem is anchored in deep crevices in the rock while the rosette of fronds emerges at ground level. The proximity to the Blyde River Canyon — one of South Africa’s most spectacular geological features — places the species in a dramatic landscape context, but one that has not provided effective protection against poaching.
The climate is subtropical with summer rainfall (600–900 mm), warm to hot summers (25–35 °C), and cool winters with occasional frost at the higher elevations. The escarpment position creates significant diurnal temperature variation and seasonal mist, particularly at the higher sites.
Conservation status — critically endangered and declining
Encephalartos cupidus is listed as Critically Endangered (CR) on the IUCN Red List. The species has suffered devastating population declines across its entire range:
In 2004, the species was confirmed extinct in Limpopo Province. It now survives only in small remnant populations in Mpumalanga Province. All subpopulations have experienced severe poaching pressure — the species’ desirability (compact, blue, easy to grow, perfect for pots) creates relentless demand, and its small size makes individual plants easy to dig up and transport.
The combination of an extremely small natural range, fragmented remnant populations, high collector demand, and the ease of illegal removal (a subterranean dwarf is easier to extract than a 3 m trunked species) has created a textbook extinction vortex. The species has been extirpated from at least two known localities entirely. The remaining populations are small, scattered, and under constant threat.
The species is also used in traditional medicine (muthi trade), creating an additional demand stream beyond the horticultural market.
The loss of cupidus from Limpopo Province is particularly instructive. The species was present in Limpopo until at least the early 2000s, but a combination of poaching for horticulture and harvesting for traditional medicine extirpated it completely by 2004. This is not a gradual decline — it is a complete removal. The populations were identified, targeted, and emptied within a few years. The Mpumalanga remnants now represent the species’ last stand in the wild, and they face the same pressures that destroyed the Limpopo populations.
The Blyde River Canyon — a spectacular setting for a desperate species
The Blyde River Canyon, near which Encephalartos cupidus occurs, is one of the largest canyons on Earth and the largest green canyon (vegetated) in the world — 26 km long, nearly 800 m deep, carved into the red sandstone and quartzite of the Mpumalanga Drakensberg escarpment. The Three Rondavels, Bourke’s Luck Potholes, and God’s Window are among South Africa’s most visited natural landmarks, drawing hundreds of thousands of tourists annually.
The irony is stark: Encephalartos cupidus occurs in one of the most visited, most photographed, most celebrated natural landscapes in South Africa — and yet it has been poached to near-extinction within that landscape. Tourism has not translated into effective protection. The cycad populations are on private land or in areas without adequate ranger presence, and the poachers operate in the same terrain that tourists admire from a distance. The beauty of the setting has attracted attention to the canyon but not to the cycads growing on its cliffs.
The dwarf habit — why Encephalartos cupidus is the ideal pot plant
The subterranean growth habit of Encephalartos cupidus is unusual in the genus and has profound implications for both its horticulture and its conservation vulnerability. Most Encephalartos develop aerial trunks that eventually become large, heavy, and difficult to move — which provides some natural deterrent against casual poaching (digging up a 3 m trunked cycad requires heavy equipment). Cupidus has no such protection. The caudex is underground. The visible part of the plant — the rosette of blue-green fronds — is the only thing projecting above the soil surface. A poacher can extract an entire plant with a spade in minutes. A multi-headed clump can be broken apart and the individual rosettes carried away in a rucksack.
In cultivation, this same compact habit makes cupidus one of the most desirable container Encephalartos. A clump of 5–10 blue-green rosettes in a wide, shallow terracotta pot is a display of extraordinary beauty — compact, intensely coloured, endlessly interesting in its suckering proliferation. Unlike the trunked species, cupidus never outgrows a pot. It can remain in the same container for decades, producing new suckers, producing occasional green cones, and maintaining a presence that is simultaneously fierce (the spiny leaflets) and refined (the venetian blue colour). For collectors in temperate climates who grow their cycads in containers and overwinter them under cover, cupidus is arguably the finest species for the purpose.
Comparison with other dwarf and compact Encephalartos
| Character | Encephalartos cupidus | Encephalartos horridus | Encephalartos cycadifolius |
|---|---|---|---|
| Stem | Subterranean, to 2.7 m underground | Subterranean, compact | Underground to 1.5 m |
| Suckering | Very prolific (10–15 per stem) | Prolific | Moderate (to 5–8) |
| Leaf colour | Blue-grey to venetian blue | Intense electric blue | Dark olive-green |
| Leaflet teeth | 3–6 per side (strongly armed) | Spine-tipped lobes (reduced) | Entire (smooth) |
| Cone colour | Bright apple-green (unique) | Brown to olive | Yellow, woolly |
| Frond length | 0.5–1.0 m | 0.5–1.0 m | 0.6–1.0 m |
| Cold hardiness | Zone 9a–9b | Zone 9a–9b | Zone 8a |
| Container suitability | Excellent (never outgrows a pot) | Excellent | Acceptable |
| IUCN status | Critically Endangered | Endangered | Vulnerable / LC |
Cultivation guide
Difficulty: 2/5 — paradoxically easy to grow. The species that is hardest to save in the wild is one of the easiest to cultivate.
Encephalartos cupidus is described by SANBI as “a very attractive, desirable, frost-hardy, dwarf, multi-stemmed cycad suitable for temperate to tropical areas.” It survives well in deep soil, full sunlight, and is drought-tolerant. It is easily propagated from both seeds and suckers. In short, it is an excellent garden plant — which is precisely the problem.
Light: Full sun. The escarpment habitat is fully exposed. Maximum light produces the best blue colouration and the most compact growth.
Soil: Deep, well-drained. The natural substrate is rocky, mineral-rich, and free-draining, but plants are anchored in deep crevices where the root system has access to substantial soil volume. In cultivation, a deep container or deep garden bed with excellent drainage is ideal.
Watering: Moderate. Drought-tolerant once established. Water regularly in summer, reduce in winter. The escarpment habitat receives 600–900 mm of summer rainfall.
Cold hardiness: Good. The escarpment at 700–1500 m experiences occasional frost. In cultivation, reliable in USDA Zone 9a–9b (−4 to −7 °C). Frost-hardy by Encephalartos standards, though less cold-tolerant than the true montane species (cycadifolius, friderici-guilielmi).
Container culture: Excellent — this is the container Encephalartos par excellence. The compact, subterranean habit, prolific suckering, and blue colour make it an outstanding specimen in a large pot. A multi-headed clump in a terracotta container, in full sun, is a display of remarkable beauty. The species does not outgrow a pot the way the trunked species do — it can remain in a container indefinitely.
Propagation: Seeds germinate readily — sow cleaned seeds half-buried on their sides in washed sand at 28 °C. Germination takes 1–3 months (relatively fast for an Encephalartos). Suckers are produced prolifically and root well when detached from the mother plant after 2 years of attached growth.
Authority websites
POWO — Plants of the World Online: https://powo.science.kew.org/…
IUCN Red List: https://www.iucnredlist.org/species/41884/121559586
SANBI Red List: https://redlist.sanbi.org/species.php?species=823-8
PlantZAfrica (SANBI): http://pza.sanbi.org/encephalartos-cupidus
World List of Cycads: https://cycadlist.org
Bibliography
Dyer, R.A. (1971). A further new species of cycad from the Transvaal. Bothalia 10: 237–383. [Original description]
Goode, D. (2001). Cycads of Africa. Struik Publishers, Cape Town. 352 pp.
Jones, D.L. (2002). Cycads of the World. 2nd ed. Smithsonian Institution Press, Washington. 456 pp.
Donaldson, J.S. (ed.) (2003). Cycads: Status Survey and Conservation Action Plan. IUCN/SSC Cycad Specialist Group, IUCN, Gland.
Raimondo, D. et al. (2009). Red List of South African Plants. Strelitzia 25. SANBI, Pretoria.