Coutoubea Aubl.

Genus

Angiosperms > Gentianales > Gentianaceae

Characteristics

Herbs, rarely trailing, erect, annual or perennial (?), simple to branched, the branches usually strongly ascending, terete. Leaves cauline, opposite or rarely ternate, the lamina lanceolate, oblong-lanceolate to oblanceolate, sessile, becoming amplexicaul, acute to long-acute at the apex, membranous to coria-ceous. Inflorescences terminal or axillary, spicate or racemose, dense to long-interrupted, many-flowered. Flowers 4 (-5)-merous, small, sessile to shortly pedicellate; calyx campanulate, deeply lobed, the lobes lanceolate-ovate, scarious-marginate; corolla white, often tinged with blue or purple, the tube short-cylin-dric, the lobes lanceolate to lanceolate-ovate, spreading; stamens inserted near the apex of the tube, the filaments filiform, spreading at the base, the anthers oblong, erect, bifid; ovary narrowly ovoid, ovary 1-locular, the placenta strongly intruding, the style filiform, the stigma bilamellate, the lobes oblong, flattened. Capsules surrounded by the marcescent calyx and/or corolla, ovoid-ellipsoid, septicidally 2-valvate; seeds small, numerous, globose, foveolate, appearing re-ticulate. Pollen grains united in tetrahedral tetrads, 55-64 ,u; single grains 3-
More
Annual herbs, mostly woody at base, sometimes creeping. Leaves sessile or petiolate, margin slightly revolute, apex acute or acuminate; venation pinnate. Inflorescences axillary and/or terminal, spikes or racemes, sometimes composed of 2 or 3 spikes or racemes (rarely a solitary flower). Flowers sessile or pedicellate, opposite, decussate or verticillate, 4-merous; calyx tubular to campanulate, calyx lobes 4, imbricate, (very) weakly keeled, margin membranous, apex (long-)acuminate; corolla salver-shaped, 4-lobed, tube with conspicuous longitudinal veins, persistent around fruit; stamens 4, filaments filiform, inserted on corolla tube with a flat membranous structure, anthers sagittate, introrse; pollen in tetrads; stigma 2-lobed. Fruit a capsule with persistent calyx and corolla tube; seeds triangular with 3 hollow sides, sometimes globose, foveolate.
colporate (3-colpate, 3-porate), the concurrent colpi of two contiguous grains ca. 18 x 16 microns, the ora usually not confluent, the colpus membrane granulose, the diameter of apocolpia 22-25 microns; exine 4-6 microns thick at the distal poles, decreasing in thickness towards equator; sexine thicker than nexine, reticulate, heterobrochate, the lumina (0.5-) 1-5 micronsin diameter, the muri 0.5-1 microns wide; nexine usually smooth (Coutoubea spicata).
Life form annual
Growth form herb
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Foliage retention deciduous
Sexuality hermaphrodite
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Environment

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Usage

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Cultivation

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Images

Coutoubea unspecified picture
Coutoubea unspecified picture

Distribution

Coutoubea world distribution map, present in Panama

Identifiers

LSID urn:lsid:ipni.org:names:16515-1
WFO ID wfo-4000009529
COL ID 3V3J
BDTFX ID -
INPN ID 627995
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Limborchia Coutoubea

Lower taxons

Coutoubea reflexa Coutoubea ramosa Coutoubea humilis Coutoubea minor Coutoubea spicata