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Mitreola L.

This name is not current. Find out more information on related names.

Reference
Opera Var. 214 (1758)
Name Status
Not Current

Scientific Description

Family Loganiaceae.

Habit and leaf form. Herbs. Annual, or perennial. Leaves cauline. To 0.025–0.3 m high. Mesophytic. Not heterophyllous. Leaves minute, or small; opposite; decussate; petiolate, or sessile; simple. Leaf blades dorsiventral; entire; ovate, or elliptic; pinnately veined; cross-venulate. Mature leaf blades adaxially glabrous, or pubescent; abaxially glabrous, or pubescent. Leaves with stipules (well developed or reduced to a transverse ridge). Stipules interpetiolar. Leaf blade margins entire.

Reproductive type, pollination. Fertile flowers hermaphrodite. Unisexual flowers absent. Plants hermaphrodite.

Inflorescence and flower features. Flowers aggregated in ‘inflorescences’; in cymes. Inflorescences terminal, or axillary (or both); dichasial with long 1-sided botryoidal branches. Flowers pedicellate, or subsessile; minute; more or less fragrant; regular; 5 merous; tetracyclic. Perianth with distinct calyx and corolla; 10; 2 -whorled; isomerous. Calyx present; 5; 1 -whorled; scarcely gamosepalous; lobed; lobulate. Calyx lobes markedly longer than the tube. Calyx glabrous (mostly), or hairy (sometimes outer surface minutely papillose); regular; persistent. Corolla present; 5; 1 -whorled; gamopetalous; lobed; lobulate. Corolla lobes about the same length as the tube (or slightly shorter). Corolla imbricate (quincuncial), or valvate (in M. minima and M. turgida); urceolate; regular; hairy abaxially (on lobes); hairy adaxially (on lobes and with penicillate hairs or pilose ring in throat); plain; white, or yellow, or purple (i.e. mauve). Androecial members definite in number. Androecium 5. Androecial members adnate; all equal; free of one another; 1 -whorled. Stamens 5. Staminal insertion near the base of the corolla tube. Stamens all inserted at the same level; isomerous with the perianth; oppositisepalous; all alternating with the corolla members. Filaments glabrous. Anthers all alike; basifixed; dehiscing via longitudinal slits. Gynoecium 2 carpelled. The pistil 2 celled. Gynoecium syncarpous; eu-syncarpous; partly inferior. Ovary plurilocular; 2 locular. Gynoecium stylate. Styles 2; partially joined (distinct at base but united in the stigma); attenuate from the ovary; apical. Stigmas 1; 2 - lobed; capitate. Placentation axile. Ovules c. 30 per locule.

Fruit and seed features. Fruit non-fleshy; dehiscent; a capsule. Dispersal unit the seed. Fruit 40–50 seeded (‘many’). Seeds endospermic.

Geography, cytology, number of species. Native of Australia. Endemic to Australia. Australian states and territories: Western Australia and Northern Territory. South-West Botanical Province. A genus of c. 6 species; 1 species in Western Australia; 1 endemic to Western Australia.

Etymology. A diminutive of the Greek mitra; refers to the mitre-shaped capsule.