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- Reference
- Char.Gen.Pl. p13 (1775)
- Name Status
- Not Current
Scientific Description
Family Rutaceae.
The concept used is in the strict sense.
Habit and leaf form. Trees; evergreen, or deciduous; bearing essential oils. Mesophytic, or xerophytic. Leaves opposite; leathery, or ‘herbaceous’; petiolate; gland-dotted; aromatic; compound; unifoliolate, or ternate. Leaflets 1, or 3. Leaf blades pinnately veined, or one-veined. Leaves without stipules, or with stipules. Stipules when present, intrapetiolar; represented by glands. Leaves without a persistent basal meristem. Leaf anatomy. Hairs present; complex hairs absent (trichomes simple). Stem anatomy. Nodes unilacunar, or tri-lacunar. Secondary thickening developing from a conventional cambial ring.
Reproductive type, pollination. Fertile flowers hermaphrodite. Unisexual flowers absent. Plants hermaphrodite. Entomophilous.
Inflorescence and flower features. Flowers aggregated in ‘inflorescences’; in panicles, or in racemes. The terminal inflorescence unit cymose, or racemose. Inflorescences axillary; narrowly paniculate to subracemose. Flowers bracteate; small to medium-sized; fragrant; regular, or somewhat irregular. The floral asymmetry when noticeable, involving the perianth and involving the androecium (not K). Flowers 4 merous; cyclic. Floral receptacle developing a gynophore (associated with the disk), or with neither androphore nor gynophore. Free hypanthium absent. Hypogynous disk present; intrastaminal; annular (sometimes one-sided), or of separate members. Perianth with distinct calyx and corolla; 8; 2 -whorled; isomerous. Calyx 4; 1 -whorled; polysepalous, or gamosepalous; imbricate; regular; with the median member posterior. Corolla 4; 1 -whorled; polypetalous, or gamopetalous; valvate; regular, or unequal but not bilabiate. Petals apically hooked. Androecium 4, or 8. Androecial members unbranched, or branched (? by the splitting of simple primordia); free of the perianth; all equal, or markedly unequal; free of one another, or coherent (? the filaments usually more or less basally connate); 1 - adelphous, or 3–12 - adelphous; 1 -whorled, or 2 -whorled. Stamens 4, or 8; isomerous with the perianth, or diplostemonous; alternisepalous, or oppositisepalous (? when the outer whorl lost). Filaments sublinear. Anthers dorsifixed, or basifixed (? more or less); versatile; dehiscing via longitudinal slits; introrse, or latrorse; tetrasporangiate. Gynoecium 4 carpelled. The pistil when syncarpous, 4 celled. Gynoecium apocarpous, or syncarpous; eu-apocarpous, or semicarpous; superior, or partly inferior, or inferior. Carpel 2 ovuled. Placentation of the free carpels marginal. Ovary plurilocular; when syncarpous, 4 locular. Styles 1, or 3–5; free, or partially joined; apical. Stigmas wet type, or dry type; papillate, or non-papillate; Group II type, or Group IV type. Placentation when syncarpous, axile. Ovules 2 per locule; pendulous to ascending; epitropous; when two or more per cell, collateral, or superposed, or biseriate; arillate, or non-arillate; anatropous, or hemianatropous.
Fruit and seed features. Fruit fleshy, or non-fleshy; an aggregate, or not an aggregate. The fruiting carpels coalescing into a secondary syncarp, or not coalescing. The fruiting carpel dehiscent; a follicle. Fruit a schizocarp. Mericarps 1–4; comprising follicles (basally connate). Seeds endospermic, or non-endospermic. Embryo well differentiated. Cotyledons 2. Embryo chlorophyllous, or achlorophyllous; straight, or curved, or bent. Seedling. Germination phanerocotylar, or cryptocotylar.
Physiology, biochemistry. Aluminium accumulation not found. Photosynthetic pathway: C3.
Additional characters Petals shortly uninerved.