The families of flowering plants
Including Ciliovallaceae Dulac, Cyananthaceae J.G. Agardh, Cyphiaceae DC., Cyphocarpaceae Miers, Jasionideae (Jasionaceae) Dum., Lobeliaceae R.Br., Nemacladaceae Nutt.Excluding Pentaphragmataceae, Sphenocleaceae
Habit and leaf form. Herbs (mostly), or trees to shrubs (a few); laticiferous. The herbs mostly perennial; with a basal aggregation of leaves, or with neither basal nor terminal aggregations of leaves. The trees pachycaul. Hydrophytic to xerophytic; when hydrophytic, rooted. Leaves of hydrophytes submerged and emergent. Leaves usually alternate, or opposite (sometimes), or whorled (sometimes); petiolate, or subsessile; sheathing, or non-sheathing. Leaf sheaths with free margins. Leaves not gland-dotted; simple (usually), or compound (occasionally); epulvinate; when compound, pinnate. Lamina when simple, dissected, or entire; linear to orbicular; when simple-dissected, pinnatifid, or palmatifid. Leaves exstipulate. Lamina margins commonly crenate, or serrate, or dentate. Leaves without a persistent basal meristem.
General anatomy. Plants with laticifers (articulated, anastomosing). The laticifers in leaves and in stems (especially in the phloem, often extending elsewhere).
Leaf anatomy. Hydathodes very commonly present. Stomata present; mainly confined to one surface, or on both surfaces (commonly); anomocytic.
Lamina dorsiventral to centric. Cystoliths commonly present. Minor leaf veins without phloem transfer cells (Campanula, Jasione).
Stem anatomy. Secretory cavities commonly present; with latex. Cork cambium present, or absent (?); initially deep-seated, or superficial. Nodes unilacunar. Primary vascular tissue seemingly usually in a cylinder, without separate bundles. Cortical bundles present (rarely, e.g. in Campanula), or absent. Medullary bundles present (commonly), or absent. Internal phloem absent. Secondary thickening developing from a conventional cambial ring. Included phloem absent. Xylem without tracheids; without fibre tracheids; with libriform fibres. Vessel end-walls simple (usually), or scalariform, or scalariform and simple. Wood parenchyma absent or indistinct.
Reproductive type, pollination. Unisexual flowers absent. Plants hermaphrodite. Pollination entomophilous; mechanism conspicuously specialized (via modifications of the style, with sterile tissue covering the stigmas at anthesis. Active in most Lobelioideae, usually passive).
Inflorescence, floral, fruit and seed morphology. Flowers solitary, or aggregated in inflorescences; in cymes, in racemes, in spikes, and in umbels. The ultimate inflorescence unit cymose, or racemose. Inflorescences scapiflorous, or not scapiflorous; terminal, or axillary; with involucral bracts, or without involucral bracts; pseudanthial, or not pseudanthial. Flowers medium-sized to large; regular to somewhat irregular; 5 merous; cyclic; tetracyclic.
Perianth with distinct calyx and corolla; 10; 2 whorled; isomerous. Calyx 5; 1 whorled; polysepalous, or gamosepalous (depending on interpretation the tube nearly always being united with the ovary); basally appendaged (e.g. in Campanula, with adjoining pairs of sepals contributing to each appendage), or neither appendaged nor spurred; imbricate, or valvate. Epicalyx present (sometimes), or absent. Corolla 5; 1 whorled; gamopetalous (commonly), or polypetalous (e.g. Jasione); valvate; often campanulate; bilabiate, or regular; blue (predominantly), or white, or yellow, or red, or pink, or purple.
Androecium 5. Androecial members free of the perianth, or adnate (then low down on the corolla); free of one another, or coherent; 1 whorled. Androecium exclusively of fertile stamens. Stamens 5; inserted when epipetalous, near the base of the corolla tube; isomerous with the perianth; oppositisepalous; alternating with the corolla members. Anthers cohering, or separate from one another; dehiscing via longitudinal slits; introrse; tetrasporangiate. Endothecium developing fibrous thickenings. Microsporogenesis simultaneous. The initial microspore tetrads tetrahedral, or isobilateral. Anther wall initially with one middle layer; of the dicot type. Tapetum glandular. Pollen grains aperturate; (2–)3–12 aperturate; colpate, or porate, or colporate (or colporoidate), or foraminate, or rugate (rarely); 2-celled (8 genera), or 3-celled (Cephalostigma and Isotoma), or 2-celled and 3-celled (with both conditions in Lobelia).
Gynoecium 2 carpelled, or 3 carpelled, or 5 carpelled. The pistil 2 celled, or 3 celled, or 5(–10) celled. Gynoecium syncarpous; synstylovarious; inferior (usually), or superior (rarely). Ovary 2 locular, or 3 locular, or 5(–10) locular. Locules secondarily divided by false septa (occasionally), or without false septa. Styles 1. Stigmas 2, or 3, or 5 (as many as the carpels); wet type, or dry type; papillate, or non-papillate; Group II type and Group IV type. Placentation axile. Ovules 10–50 per locule (i.e. many); horizontal; non-arillate; anatropous; unitegmic; tenuinucellate. Endothelium differentiated. Embryo-sac development Polygonum-type. Polar nuclei fusing prior to fertilization. Antipodal cells formed; 3; not proliferating; ephemeral. Synergids pear-shaped, or hooked (and occasionally with filiform apparatus). Endosperm formation cellular. Endosperm haustoria present; chalazal and micropylar. Embryogeny solanad.
Fruit fleshy (rarely), or non-fleshy (nearly always); dehiscent, or indehiscent; a capsule (usually), or a berry. Capsules septicidal, or loculicidal, or valvular, or splitting irregularly (i.e. variously dehiscent). Seeds endospermic. Endosperm oily (rarely starchy). Seeds small; winged, or wingless. Seeds with starch (rarely), or without starch. Cotyledons 2. Embryo achlorophyllous (4/6); straight.
Seedling. Germination phanerocotylar.
Physiology, biochemistry. Cyanogenic (rarely), or not cyanogenic. Cynogenic constituents tyrosine-derived (with triglochinin). Polyacetylenes recorded. Alkaloids present (usually), or absent. Iridoids not detected. Proanthocyanidins present (rarely), or absent; when present, cyanidin (Centropogon). Flavonols present (rarely), or absent; when present, kaempferol and quercetin, or quercetin. Ellagic acid absent (11 species, 7 genera). Ursolic acid present, or absent. Saponins/sapogenins present (rarely), or absent. Aluminium accumulation not found. Inulin recorded (very commonly). C3. C3 physiology recorded directly in Campanula. Anatomy non-C4 type (Lobelia).
Geography, cytology. Holarctic, Paleotropical, Neotropical, Cape, Australian, and Antarctic. Frigid zone to tropical. Cosmopolitan, except tropical Africa. X = 6–17.
Taxonomy. Subclass Dicotyledonae; Tenuinucelli. Dahlgrens Superorder Asteriflorae; Campanulales. Cronquists Subclass Asteridae; Campanulales. APG 3 core angiosperms; core eudicot; Superorder Asteranae; campanulid; Order Asterales.
Species 2000. Genera about 90; Adenophora, Apetahia, Astrocodon, Asyneuma, Azorina, Berenice, Brighamia, Burmeistera, Campanula, Canarina, Centropogon, Cephalostigma, Clermontia, Codonopsis, Craterocapsa, Cryptocodon, Cyananthus, Cyanea, Cylindrocarpa, Cyphia, Cyphocarpus, Delissea, Diastatea, Dielsantha, Downingia, Echinocodon, Edraianthus, Feeria, Githopsis, Grammatotheca, Gunillaea, Hanabusaya, Heterochaenia, Heterocodon, Heterotoma, Hippobroma, Homocodon, Howellia, Hypsela, Isotoma, Jasione, Legenere, Legousia, Leptocodon, Lightfootia, Lobelia, Lysipomia, Merciera, Michauxia, Microcodon, Monopsis, Musschia, Namacodon, Nemacladus, Nesocodon, Numaeacampa, Ostrowskia, Palmerella, Parishella, Peracarpa, Petromarula, Physoplexis, Phyteuma, Platycodon, Popoviocodonia, Porterella, Pratia, Prismatocarpus, Peudonemacladus, Rhigiophyllum, Roella, Rollandia, Ruthiella, Sclerotheca, Sergia, Siphocampylus, Siphocodon, Solenopsis, Symphyandra, Theilera, Trachelium, Treichelia, Trematolobelia, Trimeris, Triodanis, Unigenes, Wahlenbergia, Zeugandra.
Economic uses, etc. Numerous ornamentals from Lobelia, Wahlenbergia, Codonopsis, Jasione, etc., and more than 120 species of Campanula.
Illustrations. • Technical details: Campanula. • Technical details: Lobelia, Centropogon. • Technical details: Lightfootia (Thonner). • Campanula fragilis: Bot. Reg. 1738, 1835. • Campanula glomerata: B. Ent.). • Campanula loeflingii: Bot. Reg. 29 (19), 1843. • Campanula rotundifolia: Eng. Bot. 870 (1866). • Campanula trachelium: B. Ent. 627. • Campanula trachelium: Eng. Bot. 867 (1866). • Codonopsis ovata: as Glossocomia ovata, Bot. Reg. 3, 1842. • Downingia pulchella: as Clintonia, Bot. Reg. 1909 (1836). • Lobelia decurrens: Bot. Reg 1842 (1836). • Lobelia purpurea: Bot. Reg. 1325, 1830. • Lobelia urens: Eng. Bot. 862 (1866). • Michauxia laevigata: Bot. Reg. 1451, 1831. • Pratia begonifolia: Bot. Reg. 1373, 1830. • Campanula, Wahlenbergia, Legousia (B. Ent. compilation). • Lobelia dortmannia, Lobelia urens (Lobelioideae: B. Ent. compilation).
And there with hispid
leaves and blooms
Of darkend sapphire, richly swinging,
The Bell-flower nettle-leaved illumes
With azure light the woods; while bringing
Around it troops of insect things,
With merry song and dancing wings
(Quoted by Ann Pratt, Wild Flowers (1857), unattributed - Campanula trachelium)
When glowworm found in lanes remote,
Is murderd for its shining coat,
And put in flowers that Nature weaves
With hollow shapes and silken leaves,
Such as the Canterbury Bell,
Serving for lamp or lantern well
(John Clare, quoted by Ann Pratt, Wild Flowers (1857) - Campanula spp.)
This description is offered for casual browsing only. We strongly advise against extracting comparative information from it. This is much more easily achieved using the interactive key, which allows access to the character list, illustrations, full and partial descriptions, diagnostic descriptions, differences and similarities between taxa, lists of taxa exhibiting or lacking specified attributes, distributions of character states within any set of taxa, geographical distribution, genera included in each family, and classifications (Dahlgren; Dahlgren, Clifford, and Yeo; Cronquist; APG).
Cite this publication as: ‘Watson, L., and Dallwitz, M.J. 1992 onwards. The families of flowering plants: descriptions, illustrations, identification, and information retrieval. Version: 19th December 2012. http://delta-intkey.com’.