Lotus L.

Trefoil (en), Lotier (fr)

Genus

Angiosperms > Fabales > Fabaceae

Characteristics

Herbs or softly woody shrublets. Leaves epulvinate; stipules, if present, usually reduced to dark glands; stipels absent; leaflets entire, sometimes 3 or 4 but usually 5, with the lower pair at the base of the short rhachis resembling stipules. Inflorescence an axillary pedunculate (or, outside the Flora area, sessile) umbel with a 1–3-foliolate bract, rarely, outside the Flora area, flowers solitary in the leaf-axils. Calyx tubular, subequally 5-toothed or, outside the Flora area, the lowest tooth longest or, rarely, the teeth in 2 lips. Petals glabrous, free from the stamens; standard oblong-obovate, at the base wedge-shaped with infolded thickened margins; wings oblong, auriculate, more or less pouched, clawed; keel as long as the wings, curved, pointed or beaked, pouched at the sides, its claws free. Vexillary stamen free, the other 9 united, 5 of them with longer filaments always widened at the tip, the other 4 with shorter filaments sometimes widened; anthers all alike. Ovary sessile or shortly stipitate, in the Flora area glabrous, subcylindrical, multi-ovulate; style bent abruptly upwards at the base, glabrous, cylindrical except at the base, rigid, rather persistent. Pod straight, oblong or linear, usually cylindrical, usually septate within, dehiscent into 2 valves which usually become twisted. Seeds subglobular or lens-shaped, not conspicuously arillate; hilum minute.
More
Herbs, annual or perennial, subshrubs, or rarely shrubs. Leaves pinnate or palmate, usually sessile, 3-9-foliolate; stipules absent, or reduced to small dark glands; leaflets sessile or on very short petiolules, most species with 5 leaflets, 3 crowded at apex of leaf rachis, 2 at base; basal pair similar to apical ones or often differing in shape and stipulelike. Inflorescence an axillary, pedunculate, 1-to many-flowered umbel; peduncle with a sterile bract usually represented by a conspicuous leaf with 1-3(-5) leaflets; flower-sub­tending bracts reduced to small dark glands (rarely with a herbaceous blade) or absent; bracteoles usually absent, when rarely present then glandular. Calyx campanulate or trumpet-shaped; teeth 5, subequal or distal longer, sometimes connate into 2 lips. Corolla yel­low (often turning green in herbarium), pink, violet, brown, or white. Vexillary stamen free. Ovules numerous or several; style entire [or with a small toothlike appendage]; stigma terminal. Legume linear to ovoid, straight or incurved, terete or flattened, longitu­dinally dehiscent [indehiscent in 1 species outside China]. Seeds subglobose or lenticular, smooth, rarely verrucose.
Annual to perennial, procumbent to erect herbs or rarely subshrubs. Lvs pinnately 5-foliolate (rarely 4-foliolate but not in N.Z. spp.); leaflets entire; principal lateral veins conspicuous or not; stipules minute or 0. Infls axillary, usually umbellate, 1-many-flowered; bracts often 3-foliolate, subtending umbels; bracteoles usually 0. Calyx teeth 5, subequal or lower longer, rarely connate into 2 lips. Corolla deciduous. Vexillary filament free, the remainder connate; anthers uniform. Style glabrous; stigma terminal or lateral. Pod 2-valved, straight or slightly curved, dehiscent, not armed, many-seeded; seeds estrophiolate, smooth and rounded in N.Z. spp.
Cal campanulate or obconic, the elongate teeth subequal; pet clawed; standard obovate, not auriculate, its claw generally with thickened, infolded margins; keel-pet usually beaked; stamens 10, diadelphous; some of or all the filaments dilated at the tip; ovary sessile; pod several-seeded, dehiscent, oblong to linear, terete (in our spp.), flattened, or 4-angled; herbaceous or suffrutescent plants with pinnately compound, 1–5-foliolate lvs and solitary or umbellate fls. (Acmispon, Hosackia) 100, mainly N. Temp.
Corolla yellow, pink, cream or white, glabrous or rarely (in Macaronesia and Morocco) the standard and (very rarely) also the wings pubescent, free from the stamens; standard ± oblong-obovate, wedge-shaped at the base with infolded thickened margins; wings clawed, the blade oblong, auriculate, laterally pouched; keel curved, pointed or beaked with free claws.
Leaves sessile or with a very short petiole, usually with 5, rarely with 3–4, leaflets (or elsewhere occasionally more); leaflets petiolulate, the lower pair at the base of the rhachis and resembling stipules; stipules reduced to dark glands, sometimes inconspicuous, or absent; stipels absent.
Pod usually cylindrical, straight, linear, usually septate within, dehiscent into 2 valves (except in L. benoistii, from Morocco, with an indehiscent fruit, and in the Mediterranean L. edulis with the fruit dehiscent ventrally), the valves often becoming twisted.
Ovary sessile or shortly stipitate, glabrous (outside the Flora Zambesiaca area sometimes strigulose or hairy), subcylindrical, multi-ovulate; style bent upwards at the base, glabrous, but papillose, rigid.
Flowers in axillary usually pedunculate umbels with a 1–3-foliolate foliage leaf, rarely umbels reduced to one flower and resembling solitary flowers.
Vexillary stamen free, the other 9 with the filaments united into a sheath; free parts of at least the 5 longer filaments widened at the tip.
Calyx tubular or narrowly campanulate, subequally 5-toothed or the lowest tooth longest or the teeth in 2 lips.
Seeds ellipsoid, subreniform or subglobular, with a small, median hilum.
Annual or perennial herbs, subshrubs or dwarf shrubs.
Life form
Growth form
Growth support -
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) -
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color -
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer rhizobia
Photosynthetic pathway -

Environment

Light -
Soil humidity -
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) 4-9

Usage

Uses -
Edible -
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Mode -
Germination duration (days) 14 - 30
Germination temperacture (C°) 12 - 18
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Lotus unspecified picture

Distribution

Lotus world distribution map, present in China, New Zealand, and United States of America

Identifiers

LSID urn:lsid:ipni.org:names:30016283-2
WFO ID wfo-4000022302
COL ID 5GVF
BDTFX ID 86736
INPN ID 194288
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Andaca Bonjeanea Miediega Ortholotus Krokeria Tetragonolobus Lotus Dorycnium Flundula Heinekenia Lotea Mullaghera Pedrosia Scandalida Lotulus

Lower taxons

Lotus discolor Lotus borbasii Lotus sessilifolius Lotus australis Lotus cruentus Lotus glaucus Lotus kunkelii Lotus macranthus Lotus spectabilis Lotus campylocladus Lotus lancerottensis Lotus spartioides Lotus graecus Lotus dorycnium Lotus elisabethae Lotus becquetii Lotus hirsutus Lotus arabicus Lotus assakensis Lotus benoistii Lotus biflorus Lotus castellanus Lotus chazaliei Lotus conimbricensis Lotus conjugatus Lotus corniculatus Lotus drepanocarpus Lotus glinoides Lotus nubicus Lotus palustris Lotus uliginosus Lotus peregrinus Lotus polyphyllos Lotus quinatus Lotus simoneae Lotus tetragonolobus Lotus wildii Lotus ononopsis Lotus mollis Lotus brunneri Lotus purpureus Lotus azoricus Lotus longisiliquosus Lotus tetraphyllus Lotus burttii Lotus anfractuosus Lotus simonae Lotus pacificus Lotus sanguineus Lotus fulgurans Lotus lanuginosus Lotus laricus Lotus arinagensis Lotus broussonetii Lotus dumetorum Lotus emeroides Lotus eremiticus Lotus mascaensis Lotus stepposus Lotus divaricatus Lotus glacialis Lotus rechingeri Lotus compactus Lotus alpicola Lotus dvinensis Lotus sergievskiae Lotus norvegicus Lotus peczoricus Lotus ucrainicus Lotus rectus Lotus requienii Lotus gebelia Lotus hebecarpus Lotus jacobaeus Lotus lebrunii Lotus maroccanus Lotus subbiflorus Lotus subdigitatus Lotus weilleri Lotus armeniacus Lotus holosericeus Lotus zhegulensis Lotus tenellus Lotus halophilus Lotus malatayicus Lotus leptophyllus Lotus robsonii Lotus mlanjeanus Lotus torulosus Lotus argyrodes Lotus loweanus Lotus hebranicus Lotus coronillaefolius Lotus taitungensis Lotus lourdes-santiagoi Lotus germanicus Lotus polyphyllus Lotus lalambensis Lotus oxyphyllus Lotus davyae Lotus krylovii Lotus requienii Lotus arenarius Lotus garcinii Lotus eriophthalmus Lotus frondosus Lotus herbaceus Lotus tauricus Lotus callis-viridis Lotus pyranthus Lotus jordanii Lotus gomerythus Lotus latidentatus Lotus zemmouriensis Lotus namulensis Lotus glareosus Lotus schoelleri Lotus medioximus Lotus aegeus Lotus strictus Lotus hakkariensis Lotus x minoricensis Lotus alianus Lotus berthelotii Lotus berthelotii Lotus onomopsis Lotus jolyi Lotus hirtulus Lotus oliveirae Lotus tibesticus Lotus aegaeus Lotus tenuis Lotus glaucus Lotus parviflorus Lotus angustissimus Lotus goetzei Lotus maculatus Lotus edulis Lotus tenuis Lotus pedunculatus Lotus cytisoides Lotus maritimus Lotus creticus Lotus hispidus Lotus ornithopodioides