young shoot icon Home All plants About

Microtoena Prain

Genus

Angiosperms > Lamiales > Lamiaceae

Characteristics

Herbs erect. Leaf blade margin dentate. Cymes dichotomous, axillary and/or in terminal panicles; bracts and bracteoles linear, early deciduous. Calyx campanulate, 10-veined; teeth 5, triangular to linear, subequal or posterior teeth much longer; fruiting calyx dilated or saccate-dilated, base rounded. Corolla yellow, rarely white, marked with purple-red or brown on upper lip; tube exserted, straight, base narrow, dilated above middle, annulus absent inside; upper lip straight, galeate, base obliquely cuneate or sometimes short clawed; lower lip spreading, 3-lobed, middle lobe ligulate to ovate, lateral lobes ovate or circular. Stamens 4, subequal, included in upper lip or slightly exserted; filaments complanate, usually glabrous; anther cells 2, apically divaricate, becoming confluent. Style as long as stamens, anterior lobe subulate, posterior lobe short to inconspicuous. Nutlets ovoid, glabrous, adaxially veined, abaxially rounded, constricted at base, areole small.
More
Erect, branching, perennial herbs. Flowers in large terminal panicles and smaller axillary cymes. Calyx campanulate, accrescent in fruit, obscurely 10-nerved, unequally 5-toothed, the posterior tooth largest; throat glabrous within. Corolla tube long-exserted, 2-lipped; upper lip galeate, concave, entire; lower lip spreading, 3-fid, midlobe much narrower and longer than the lateral ones. Stamens 4, in 2 pairs, ascending under the upper lip, two upper ones slightly longer; anther-cells divaricate when young, at length confluent; filaments often hirsute. Disk equal-sided. Style bifid, upper branch very short. Nutlets minute, ovoid, ventral surface subtriquetrous, smooth or granular.
Life form perennial
Growth form herb
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 -
Photosynthetic pathway -

Environment

Light -
Soil humidity -
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) 8-12

Usage

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

Cultivation

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

Distribution

Microtoena world distribution map, present in Bangladesh, China, Indonesia, Lao People's Democratic Republic, Myanmar, Nepal, Thailand, and Viet Nam

Identifiers

LSID urn:lsid:ipni.org:names:21037-1
WFO ID wfo-4000024258
COL ID 8VZDW
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Microtoena

Lower taxons

Microtoena albescens Microtoena delavayi Microtoena praineana Microtoena robusta Microtoena stenocalyx Microtoena urticifolia Microtoena vanchingshanensis Microtoena wardii Microtoena esquirolii Microtoena insuavis Microtoena megacalyx Microtoena miyiensis Microtoena mollis Microtoena moupinensis Microtoena muliensis Microtoena nepalensis Microtoena omeiensis Microtoena patchoulii
WorldFloraDB 2024