Capsicum schottianum

Overview

Capsicum schottianum is a wild pepper native to the Atlantic Forest of southeastern Brazil, particularly the states of Minas Gerais, Rio de Janeiro and São Paulo. It is not a cultivated chilli variety. In its natural habitat it grows as an upright, branching shrub or occasionally a small tree, often along forest tracks, streams and openings where light reaches the lower vegetation. Its distinctive features include uneven pairs of leaves, sharply bent flower stalks, white star-shaped flowers with purple and greenish-yellow markings, and small golden fruit.

Unlike most garden chillies, the ripe berries are greenish-golden yellow and partly translucent, not bright red. Their dark brown to black seeds are similarly unlike the pale seeds of many cultivated species. The 2022 Capsicum monograph reports an unusual change in heat as the berries ripen: immature fruits are pungent, with less pungency at maturity. A measured Scoville range is not established by that observation, so the plant should not be assigned a specific SHU figure.

The flower is perhaps the best field clue. Some plants show striking reddish-purple patches along the petal lobes, while others have much fainter markings or none at all. A botanical photograph plate in the 2022 monograph shows just how variable the colour can be, even within a single population. The species belongs to the genetically distinct Atlantic Forest group of wild Capsicum, a lineage important for understanding the diversity of the genus beyond domesticated peppers.

Scientific name

Capsicum schottianum Sendtn.

Family

Solanaceae

First description

1846, Otto Sendtner

Native range

Brazil: Minas Gerais, Rio de Janeiro & São Paulo

Growth habit

Shrub 1–2.5 m; sometimes a 3–5 m tree

Flowers

White, often purple & greenish-yellow marked

Ripe fruit

Greenish-golden yellow; 7–9 mm

Pungency

Pungent when green; less pungent when ripe

Seeds

Usually 7–19; brownish-black to black

Habitat

Atlantic Forest, roughly 250–1,700 m

Chromosomes

2n = 26 (13 pairs)

Evolutionary group

Atlantic Forest clade

Conservation

Least Concern (2022 preliminary assessment)

Discovery & naming

Otto Sendtner, a German botanist who worked extensively on the nightshade family, published the species as Capsicum schottianum in 1846. The description appeared in volume 10 of Flora Brasiliensis, the enormous nineteenth-century undertaking associated with Carl Friedrich Philipp von Martius and the documentation of Brazil's plants. Unlike many South American peppers that were first described in Witheringia, Brachistus or another genus, this species was already placed in Capsicum in its original formal name. Its botanical author abbreviation is Sendtn.

That early publication was only the start of a much longer identification story. Wild forest peppers share a collection of small features that are often damaged or hidden in dried botanical specimens. A plant collected with leaves and unripe fruit, but no open flower, might be very difficult to separate from another species. In particular, C. schottianum, C. campylopodium and C. flexuosum all have calyces with no conspicuously long teeth; those similarities contributed to mistaken identifications and complicated their historical ranges.

In 1852, Michel Félix Dunal published the variety Capsicum schottianum var. leptophyllum, based on an earlier slender-leaved form. Modern researchers concluded that its described flower and fruit stalks better match C. flexuosum, and the 2022 monograph places that name there rather than treating it as a form of C. schottianum. This distinction matters when interpreting old plant labels or historical botanical lists.

The confusion continued into the twentieth century. Armando T. Hunziker used the name C. schottianum for plants now understood as C. flexuosum in work published in 1950. He later corrected that interpretation in 1998, and his 2001 treatment restricted the true C. schottianum to Brazil. The US Department of Agriculture also explicitly warns that the name C. schottianum as used by some authors refers instead to C. flexuosum.

Modern studies have clarified the issue through detailed flower anatomy, seed structure, specimen comparisons and genetic research. The comprehensive 2022 monograph presents this species alongside photographs, a technical drawing and a distribution map. Those illustrations make the subtle distinctions much easier to see than they are from old dried herbarium material alone.

Read the original 1846 publication in Flora Brasiliensis.

Plant & foliage

Most individuals are upright shrubs around 1–2.5 metres tall. In favourable forest conditions some develop into small trees reaching 3–5 metres, with a trunk that can approach 6 cm in diameter. The plant branches repeatedly near the upper part of the stem. The resulting twigs often diverge in opposite directions, creating the characteristic zig-zag branching pattern common in several wild peppers.

Young stems are green or faintly purplish, with three or four perceptible angles and fine forward-pointing hairs. Leaf joints can be noticeably swollen and dark green, almost black, or lilac. Old stems lose much of their hair and develop dark brown bark. The 2022 description notes the absence of the obvious pale bark pores, or lenticels, seen in several other wild Capsicum species.

Leaves typically grow in unequal pairs. The larger blade is usually about 9.5–16.5 cm long, although some specimens reach 25.5 cm, and commonly 2–4 cm wide. It is elliptic to oval, tapers to a pointed tip and has a smooth edge. Its smaller partner is often only 3.4–4.2 cm long and has a much shorter stalk. The difference between the leaves is part of the plant's normal branching arrangement, not a sign of damage or disease.

The foliage has a fairly soft, thin texture rather than the tough, glossy appearance of some related forest peppers. The upper face is green and relatively dull, while the underside is paler. Small hairs may be present on both surfaces, especially along the veins, but some leaves look nearly smooth. Larger leaves commonly have six to eight secondary veins on either side of the main vein.

That combination — dark, swollen leaf joints, pairs of uneven thin leaves, and a strongly branched upright shrub — helps give C. schottianum its recognisable appearance even before the flowers open. But the plant's varied hairiness and height mean it is best identified using the flowers and calyx as well.

Flowers & calyx

Flowering takes place at the leaf joints, usually in groups of two to five blossoms, occasionally up to seven. Individual flower stalks measure roughly 8–25 mm and begin erect or spreading before making a distinct sharp bend close to the flower. Botanists call this bend geniculate. It can make a bud appear to point sideways even when the lower part of its stalk is upright.

The open flowers are star-shaped, about 8–12 mm across, with exceptionally broad examples reaching 14 mm. Each flower is typically 7–10 mm long, with five spreading, triangular to oval petal lobes. Their base colour is white, but many have green or greenish-yellow patches and reddish-purple to brownish spots on the inner face. Some flowers are vividly marked, while others show only a faint wash of colour.

This variation is unusually striking. The 2022 researchers observed flowers with different degrees of purple pigmentation on the same plant and within populations around Ubatuba in São Paulo. Other populations, including plants from Serra do Paranapiacaba, can have flowers with no obvious purple markings. A flower that appears largely white and green can therefore still belong to the same species as one with strong purple patches.

Under magnification, a ring of tiny glandular hairs occurs in the throat and near the base of the petal lobes. The tips of the petals may be hooded or slightly curled. Five stamens surround the central style. Their filaments are equal, usually 3–4 mm long, and the anthers can be yellow, greenish, grey or light purple. Unlike the tightly gathered anthers of some cultivated peppers, they are usually not pressed together when the flower is open.

The calyx is a particularly useful distinguishing feature. It is a small green cup only about 2–2.4 mm long, sometimes slightly shorter, whose edge may appear nearly round or five-sided. It has no long projecting teeth. At most, five very short bumps, around 0.35 mm, sit along the main veins. Those little points and the visible veins can give it a distinctly pentagonal outline — an important difference from forest peppers with long horn-like calyx projections.

Fruit & seeds

The berries are small, smooth and approximately round, usually 7–9 mm in diameter. Their colour develops from green when immature to a translucent greenish-golden yellow when mature. In strong light a ripe berry may appear pale yellow or honey-coloured, rather than the solid red of a bird pepper. A ripe berry can separate and fall from its stalk, so plants do not necessarily retain every mature fruit.

The fruiting stalk grows to roughly 17–27 mm and becomes pendent, holding the berry below the branch. This contrasts with the more upright, sharply bent position of many flowering stalks. The thin calyx remains underneath the fruit and spreads into a small disc around 3–4.5 mm across. It does not grow into the long, conspicuous horns seen in many other wild pepper species.

Researchers describe the immature berries as pungent, while the ripe berries are less pungent. This is important: C. schottianum should not be labelled non-pungent merely because it is a little-known wild pepper or because the mature fruit is milder than a typical chilli. Conversely, the monograph does not give a consistent laboratory Scoville value, and the change in pungency should not be turned into an invented SHU number.

Another distinction is inside the berry. The thin, slightly translucent fruit wall contains large specialised cells, creating a pitted inner surface known as an alveolate endocarp. These are the kinds of microscopic features botanists study to compare species even when the fruits look similar on the outside. The 2022 illustration also depicts the fruit in cross section and shows the large cells within its wall.

Most fruits hold about 7–19 seeds, occasionally fewer or as many as 23. The seeds measure roughly 2.6–3.5 mm long and 2–3 mm wide. They are curved, somewhat C-shaped or teardrop-like and brownish-black to black, with a finely patterned surface. Under stronger magnification, the seed-coat walls form a network, and the margin has small raised projections. These dark, sculptured seeds are an important clue when separating the species from cultivated peppers with smooth, pale seeds.

Range & habitat

Capsicum schottianum is endemic to southeastern Brazil. The documented range covers Minas Gerais, Rio de Janeiro and São Paulo, especially the mountainous belts associated with the Serra do Mar and nearby Atlantic Forest highlands. Unlike Capsicum flexuosum, its accepted range does not extend into Paraguay or Argentina. Records published under the wrong name have sometimes obscured that distinction.

It lives in the Mata Atlântica, the Atlantic Forest complex of coastal and inland mountain forests. The 2022 monograph places the species in moist, dense evergreen forest and seasonal semi-deciduous forest, from low mountain slopes into higher elevations. It is found in both relatively undisturbed forests and regrowing or disturbed areas, including forest edges, clearings and streamside vegetation. Plants can grow in sunny positions or in partial shade.

Collections commonly occur between about 250 and 1,700 metres above sea level. This broad elevation interval brings a range of local temperatures, moisture levels and canopy conditions. Its ability to occupy several forest settings helps explain why individuals differ so much in height and general appearance. In shaded forest, it may develop as a tall, loose shrub; where more light is available, branches may form a denser crown.

The monograph documents populations in the mountain systems of Serra da Carioca, Serra da Bocaina, Serra do Paranapiacaba and Serra dos Órgãos. This is not a pepper known from one isolated ravine: researchers report it as relatively frequent, in some locations forming substantial populations with many flowering and fruiting plants. That broad regional presence is important to understanding its conservation assessment.

Seasonal life & local name

Field and herbarium records indicate that flowers are most often seen from September through April and fruits from December through June in the native range. These observations cover many places and years, rather than a single plant's fixed flowering calendar. The overlap means that a shrub may carry flowers, immature green berries and ripening golden berries at the same time.

A local name recorded on a specimen from Minas Gerais is pimenta bentiví. The botanical monograph records it from a collection made by Armando Hunziker (no. 25145). This is a useful piece of the plant's local history: it shows that the species has been recognised outside formal botanical naming. The name should not be treated as universal throughout Brazil, and the collection alone does not establish a traditional culinary use.

The species' greenish-golden berries and pale, patterned blossoms are less familiar than the bright-red wild peppers widely cultivated in gardens. Its presence in the understorey and at forest margins is part of the broader Atlantic Forest pepper flora, which also includes species with different flower markings, fruit colours and forms of pungency. Documented local populations provide material for botanical comparisons and studies of how the genus diversified in Brazilian forests.

Because the species grows in both forest interiors and edges, individual plants can receive very different amounts of light. The published photographs show that even flower pigmentation varies within local populations. Field identification is therefore best based on multiple characters together, not on the colour of one isolated flower.

Identification & related species

C. schottianum belongs to the Atlantic Forest clade, a group of wild Brazilian peppers distinct from the lineages that contain the familiar cultivated C. annuum, C. chinense and C. baccatum. Several Atlantic Forest species have marked flowers and dark seeds, but the species are not interchangeable. Older dried collections have been particularly difficult to identify because flower colours fade and the angle of the flower stalk can change during pressing.

Compared with Capsicum campylopodium

These two species both have sharply bent flower stalks, a calyx with no obvious long appendages and greenish-golden berries with dark seeds. But C. campylopodium typically has a smaller, rounder calyx, only about 1–1.6 mm long, and a smaller flower with a mainly golden-yellow inner pattern rather than the usual purple-and-green combination. Its stamens are of unequal lengths (three long and two short). Most importantly, its slightly flattened berries hold only four seeds, rarely six, compared with the roughly 7–19 typical of C. schottianum.

Compared with Capsicum flexuosum

The most dependable differences are in flower stalks and ripe berries. C. flexuosum does not normally have the sharp bend in its flowering stalks and produces red to reddish-orange ripe fruits. Its flowers generally have greenish-yellow markings without the characteristic combination of purple and greenish-yellow spots seen in many C. schottianum plants. The latter instead has greenish-golden ripe berries and a bent flowering stalk. This comparison also explains why nineteenth- and twentieth-century records under the name schottianum require careful interpretation.

Compared with Capsicum pereirae and C. hunzikerianum

C. pereirae can show similarly patterned flowers, but has tougher, shinier leaves and flowering stalks that lack the characteristic sharp bend. C. hunzikerianum also shares aspects of the flower and fruit colour, but its corollas are substantially larger and its calyx has long, noticeable projections, unlike the almost toothless calyx of C. schottianum. Both are good examples of why the calyx is such an important part of pepper identification.

For a practical identification, look for a Brazilian Atlantic Forest shrub with unequal, thin leaves; two to five small star-shaped flowers; sharply bent flower stalks; a tiny five-sided, almost toothless calyx; and golden, dark-seeded berries. Purple markings strengthen the identification when present, but their absence does not rule it out.

Chromosomes & DNA research

Chromosome research has established that Capsicum schottianum has 2n = 26 chromosomes, or 13 pairs. That differs from the 2n = 24 arrangement found in many familiar crop peppers. A Brazilian study published in 2006 confirmed the 26-chromosome count in several native species including this one. Earlier and subsequent work also recognised the genetic separation of the Atlantic Forest group from other pepper lineages.

A broad molecular analysis published in 2016 helped place the species within the Atlantic Forest group. A more detailed genome-wide study published in 2022 recovered the group again and showed that C. schottianum, C. recurvatum and C. campylopodium belong among its related members. The paper also showed that the Atlantic Forest is one of the major centres of wild pepper diversity in South America.

In September 2026, a study of chromosome evolution measured the nuclear DNA content of a C. schottianum accession, recorded as 380, at 4.20 ± 0.007 picograms (1C). It confirmed 26 chromosomes and identified two major 35S ribosomal DNA sites and one 5S site. These are genetic markers on the chromosomes, not heat or flavour measurements. The DNA amount is also not a whole-genome sequence; it measures the approximate mass of one complete set of nuclear chromosomes.

The same 2026 study measured C. recurvatum at 4.28 ± 0.008 pg (1C), consistent with the closely related Atlantic Forest species having similar genome sizes. Across the genus, the researchers inferred that the 13-pair chromosome arrangement evolved separately in the Atlantic Forest and Andean lineages. This adds a genetic dimension to the physical differences that nineteenth-century botanists first described.

These investigations matter because wild peppers preserve combinations of traits not usually found in domesticated varieties: varying flower pigments, tiny dark seeds, forest-adapted growth and fruit that changes in pungency as it develops. Their chromosomes and DNA also help reconstruct the evolutionary history of Capsicum.

Conservation

The authors of the 2022 Capsicum monograph proposed a preliminary Least Concern (LC) assessment for C. schottianum. Their calculations gave an extent of occurrence of about 148,467 km² and an area of occupancy of 216 km². They highlighted both its relatively wide regional range and its frequent occurrence in numerous protected areas, together with sizable populations of plants that flower and set fruit well.

This preliminary assessment should not be confused with an independently verified official IUCN Red List listing. Separately, a 2024 extinction-risk prediction displayed by Kew classified the species as not threatened with high confidence. That is a predictive model rather than a field conservation assessment, although it broadly agrees with the 2022 authors' judgment.

Much of the Atlantic Forest has experienced clearing and fragmentation, and forest-edge populations remain affected by local land-use change. Nevertheless, this particular wild pepper has been recorded in different habitat conditions and across several mountainous areas. Conserving the remaining forests and the plant populations within them helps retain the living genetic diversity represented by its unusual flowers, golden berries and dark seeds.