Skip to main content

Service Notice

The Western Australian Herbarium’s collections management system and census were set to read-only mode on 1 October 2025. Taxonomic updates published since this time are not being reflected in Florabase, herbarium collections, or Western Australia’s taxonomic names census (Nomos). Conservation listings displayed on Florabase may also be out of date. Please refer to DBCA’s Threatened species and communities webpage for the most recent Threatened and Priority Flora List, noting that recent taxonomic updates are similarly not included. Our database migration is moving to a staging phase. We thank you for your patience as we ensure the integrity of our biodiversity data, develop new workflows, and train staff to use the new systems. Please reach out to us if you have any questions or concerns.

The notice period started at 12:00 pm on Wednesday, 1 October 2025 +08:00 and will end at 12:00 pm on Friday, 1 January 2027 +08:00.

Advanced Search

Pericalymma (Endl.) Endl.

Reference
Gen.Pl. p1230 (1876)
Name Status
Current

Scientific Description

Common name. Teatrees. Family Myrtaceae.

Habit and leaf form. Shrubs; evergreen; bearing essential oils. Plants with neither basal nor terminal concentrations of leaves. Young stems with stem flanges. To 1 m high. Leptocaul. Helophytic, or mesophytic. Leaves minute to medium-sized; alternate; leathery; petiolate to subsessile; gland-dotted; aromatic; edgewise to the stem, or with ‘normal’ orientation; simple; epulvinate. Leaf blades dorsiventral, or isobilateral, or centric; entire; flat, or folded (apparently); linear, or lanceolate, or oblong, or ovate; linear, or ovate, or oblong; pinnately veined, or parallel-veined, or one-veined; cross-venulate, or without cross-venules. Mature leaf blades adaxially glabrous; abaxially glabrous. Leaves without stipules; without a persistent basal meristem. Leaf anatomy. Hairs absent. Stem anatomy. Secondary thickening developing from a conventional cambial ring.

Reproductive type, pollination. Fertile flowers hermaphrodite. Unisexual flowers absent. Plants hermaphrodite. Entomophilous, or ornithophilous. Pollination mechanism unspecialized.

Inflorescence and flower features. Flowers solitary, or aggregated in ‘inflorescences’. The terminal inflorescence unit cymose. Inflorescences of 1-few flowers at the end of a modified stem which is frondobracteose and usually with the terminal bud aborted. Flowers bracteate (the bracts intergrading with the leaves); bracteolate, or ebracteolate; small to medium-sized; regular, or somewhat irregular. The floral asymmetry (when noticeable) involving the androecium. Flowers 5 merous; cyclic. Free hypanthium present (petals ‘inserted on the calyx’); campanulate. Hypogynous disk present. Perianth with distinct calyx and corolla; 10; 2 -whorled; isomerous. Calyx present; 5; 1 -whorled; gamosepalous; lobed; imbricate, or valvate; exceeded by the corolla; regular; persistent. Calyx lobes triangular. Corolla present; 5; 1 -whorled; polypetalous; imbricate; regular; hairy abaxially (usually); glabrous adaxially; plain, or with contrasting markings; white, or pink, or pink and red. Petals obovate. Androecial members indefinite in number. Androecium 17–24. Androecial members branched. Androecial sequence determinable, or not determinable. Androecial members if ‘many’, maturing centripetally; free of the perianth; all equal, or markedly unequal; free of one another. Stamens 17–24 (1 opposite each petal and 2–4 opposite each sepal); shorter than the petals; polystemonous; alternisepalous and oppositisepalous; both opposite and alternating with the corolla members; erect in bud, or inflexed in bud. Filaments not geniculate; filiform. Anthers dorsifixed; versatile; dehiscing via longitudinal slits; introrse; tetrasporangiate; appendaged, or unappendaged. Gynoecium 3 carpelled. The pistil 3 celled. Gynoecium syncarpous; eu-syncarpous; inferior, or partly inferior. Ovary plurilocular; 3 locular. Epigynous disk present, or absent. Gynoecium stylate. Styles 1; simple; from a depression at the top of the ovary; apical. Stigmas 1; peltate. Placentation axile. Ovules several per locule, only the lowest one maturing; pendulous to horizontal; non-arillate; hemianatropous (and peltate).

Fruit and seed features. Fruit non-fleshy (woody); dehiscent; a capsule (3-valved). Capsules septicidal, or loculicidal, or denticidal, or circumscissile. Fruit 3 seeded. Seeds 1 per locule. Seeds non-endospermic. Cotyledons 2. Testa with a close pattern of minute protuberances.

Geography, cytology, number of species. Native of Australia. Endemic to Australia. Australian states and territories: Western Australia. South-West Botanical Province.