Glossary: the vocabulary of hibiscus

Every term used across the site in one plain-language A–Z. Botanical names link to the deep dives where they live.

Agua de jamaica

The Mexican chilled drink made from dried roselle calyces — and the everyday name (flor de jamaica) for the dried product itself. See Kitchen & Products.

Albus

Race (seed-true type) of H. sabdariffa var. sabdariffa with green/whitish, nearly pigment-free calyces, prized as a vegetable and for pale products. See Red vs white.

Altissima

H. sabdariffa var. altissima — the tall, sparsely branched fiber type (“roselle hemp”) with inedible calyces. See Fiber types.

Anthocyanins

Water-soluble red-to-purple plant pigments (flavonoid glycosides) that give roselle calyces their color; chiefly delphinidin- and cyanidin-based in hibiscus. The color you sell, and the compounds most studied for vascular effects. See Health.

Bissap

Senegalese (Wolof) name for roselle and for the sweet, minted chilled infusion made from its calyces — the signature drink of much of Francophone West Africa. See World’s drinks.

Bract / bracteole

A leaf-like organ below a flower. In roselle, 8–12 slender bracteoles form the epicalyx collar at the base of the calyx — a handy genus-level field character. See Anatomy.

Calyx

The whorl of sepals beneath the petals. In roselle the five sepals swell after flowering into the fleshy, acid, crimson cup that is harvested and dried — the “hibiscus flower” of commerce. See Anatomy.

Capsule

The true fruit: a dry, 5-valved capsule that splits when ripe, holding kidney-shaped seeds (3–5 mm). It rides inside the fleshy calyx through harvest. See Fruit & seed.

Corolla

The petals as a whole; in hibiscus, five (often showy) petals that typically last a single day.

Cotton stainer

Bugs of the genus Dysdercus that feed on ripening calyces, staining and spoiling fruit. See Pests.

Cultivar

A named, human-selected variety (“cultivated variety”), e.g. ‘Victor’ or ‘Archer’ roselle, usually propagated true-to-type. See Cultivars.

Day-neutral

Flowering regardless of day length — the trait that lets kenaf and some leaf-selected hibiscus types ignore the calendar that locks in roselle’s season.

Epicalyx

The ring of bracteoles outside the calyx, typical of the mallow family. See Anatomy.

Flor de jamaica

Mexican market name for dried roselle calyces (“Jamaica flower”) — technically a misnomer, since it’s the calyx, not the flower, that’s sold. See Confusions.

Gongura

Telugu name for roselle grown as a leaf vegetable in India — and for its sour curries and chutneys. Red- and green-stem types differ in flavor and regional following. See Leaf types.

Hibiscus acid

A signature organic acid of roselle (a hydroxycitric-acid lactone family member) that contributes its distinctive sourness alongside citric, malic and tartaric acids. See Compounds.

IPM

Integrated Pest Management — the layered approach (prevention → cultural/physical controls → biological → minimal targeted chemistry) used throughout the Pests & Diseases guide.

Karkadé (carcadé)

The Arabic name for roselle — and the name European importers and pharmacists have used for the dried calyx trade for generations. See Names.

Kenaf

H. cannabinus — the mallow-family fiber crop often confused with fiber roselle; comparatively day-neutral, grown for cordage, paper and board. See Fiber types.

Landrace

A locally adapted, open-pollinated population developed by generations of farmers (most commercial roselle is landrace material, regionally named). See Choosing material.

Malvaceae

The mallow family: hibiscus, cotton, okra, cacao, baobab, durian, hollyhock and more. See Family.

Mealybug

A sap-sucking scale insect cousin that can be very troublesome on roselle, hiding in axils and inside calyx cups. See Pests.

Meloidogyne

The root-knot nematode genus — roselle’s most serious long-term soil pest, marked by root galls and field patches of stunting. Prevent with rotation and clean land. See Pests.

Monadelphous

Of stamens: fused into a single tube or column — the arrangement that gives hibiscus its showy central column topped by five stigmas. See Anatomy.

Mucilage

Gel-like polysaccharide that gives hibiscus infusions body, and mallow-family relatives (like marshmallow) their classic slipperiness.

Open-pollinated

Of a crop: reproducing by natural pollination and breeding reasonably true from saved seed — roselle’s normal state, which makes farm-level seed saving and selection practical. See Seed saving.

pH

A measure of acidity: roselle grows best in soils near pH 5.5–6.8, and its brews are strongly acid (pH ~2.5–3.5), which keeps anthocyanins red. See Soils and Color tip.

Photoperiod

The day-length regime of a place or season; the driver of roselle’s short-day flowering response. See Day length.

Race

In roselle taxonomy, a seed-true subdivision of the food variety — ruber (red), albus (white/green), intermedius and bhagalpuriensi. See Variety map.

Roselle

The standard English common name for Hibiscus sabdariffa — the edible-calyx crop grown for tea, drinks, preserves, leaves and fiber. Also called red sorrel, Jamaica sorrel, Florida cranberry and many regional names. See Fast facts.

Ruber

The red race of var. sabdariffa — deep crimson fleshy calyces, the basis of the world’s hibiscus beverage trade. See Red vs white.

Sabdariffa

The species name of roselle. Hibiscus sabdariffa L. — the only species of the genus with a global processed-food market. See Fast facts.

Sambubioside

The sugar (sambubiose) attached to hibiscus’s main anthocyanins — hence delphinidin-3-sambubioside and cyanidin-3-sambubioside, the pigment names you’ll meet in papers. See Compounds.

Sepal

One member of the calyx, the outermost floral whorl. In roselle the five sepals enlarge into the fleshy, edible, crimson cup you harvest. See Anatomy.

Short-day plant

A plant that begins flowering when day length falls below a critical value — roselle’s trigger sits around 12–13 hours, which locks planting calendars across the world. See Day length.

Solar dryer

A sun-powered drying box or tunnel that protects produce while accelerating moisture loss — often the single best small-holder upgrade for consistent roselle color and grade. See Drying methods.

Sorrel / red sorrel

Caribbean name for roselle and its Christmas punch (steeped with ginger, orange, cloves, cinnamon — rum optional). See World’s drinks.

Staminal column

The fused tube of stamens rising from a hibiscus flower’s center, tipped with five free stigma branches — pollinated chiefly by bees. See Anatomy.

Thinning

Removing surplus seedlings (classically about half, once 2–3 leaves appear) so the survivors reach their full spacing and yield. See Planting.

Topping

Removing the growing tip of a young plant to force branching — in roselle, more branches mean more flowering shoots and calyces. See Pruning.

Transplant

A nursery-raised seedling moved to the field, or the act of moving it — roselle transplants are ready roughly 4–6 weeks after sowing. See Transplanting.

Variety

A taxonomic rank below species (as in var. sabdariffa vs var. altissima); loosely, any distinct cultivated type. See Variety map.

Water activity (a_w)

The “available water” measure that decides whether molds can grow in dried product — dried calyx at ≤10–12% moisture is dry enough (a_w low enough) for safe storage. See Moisture.

Wilt

The symptom of vascular diseases (e.g. Fusarium) in which plants collapse despite moist soil — in roselle usually the endgame of saturated roots and poor rotation. See Diseases.

Zobo

Nigerian name for roselle and for the chilled ginger-and-pineapple infusion made from its calyces. See World’s drinks.