Coutoubea humilis

Description

Small creeping herb, 8-28 cm long, rooting at nodes. Stem at base 0.1-0.2 cm in diam., quadrangular, simple or poorly branched; internodes 0.5-6 cm long. Leaves petiolate; petiole 0.3-2 cm long; blade fleshy (dried chartaceous to membranous), ovate to narrowly elliptic, 1.8-10.5 x 0.6-3 cm, base attenuate; primary and secondary veins slightly prominent or sunken above, prominent beneath. Inflorescence a terminal (and axillary) raceme, 0.2-4 cm long, including peduncle of 0-1 cm long; bracts and bracteoles ovate, ca. 1 mm long, acuminate(basal bracts sometimes leaf-like, up to 10 mm long); pedicels 0-1 mm long. Flowers horizontal, congested, decussate; calyx chartaceous, 3-5 mm long, calyx lobes 2-3.5 x 1-1.5 mm, apex acuminate; corolla white or tinged with green, membranous, 5-8 mm long, corolla lobes erect, 2.5-4 x 0.6-1.5 mm, apex acute; filaments white, 2 mm long, anthers white or pale orange, ca. 1 mm long; ovary ovoid, 3 x 1.5 mm, style 2 mm long, stigma lobes 0.5-1 x 0.5 mm. Fruit green, narrowly ovoid, 5-8 x 1.5-4 mm; seeds pale brown, 0.4 mm in diam.

Distribution

Guyana, Republic of: present
Guyana; 8 collections studied (GU: 8).

Phenology

Flowering and fruiting in .

Synonymy

Coutoubea humilis Sandwith in Kew Bull. Misc. Inform. 1939: 17. 1939 sec. JEANETTE ALLOGIO, LAURA COBB, JASON R. GRANT & al., 2012
    • Holotype: Guyana, Potaro R., on left bank of the Kaieteur Falls, in swampy forest, Sandwith 1386.

Specimens

CountryDateCollector + collecting numberHerbariaTypeScanDerivatives
Sandwith 1386
Citation: Guyana, Potaro R., on left bank of the Kaieteur Falls, in swampy forest, Sandwith 1386.

Specimen summary: Guyana, Potaro R., on left bank of the Kaieteur Falls, in swampy forest, Sandwith 1386.
Holotype of Coutoubea humilis Sandwith
Guyana, Republic ofCowan & Soderstrom 1774K, US, NY
Citation: Guyana, Republic of, Potaro R., 3 miles above Kaieteur Falls, Cowan & Soderstrom 1774.

Specimen summary: K

Specimen summary: NY

Specimen summary: US

Guyana, Republic ofWhitton 61K
Citation: Guyana, Republic of, Potaro R., Amatuk, Whitton 61.

Specimen summary: K

Guyana, Republic ofKvist 154L, BRG, US
Citation: Guyana, Republic of, Potaro R., below Kaieteur Falls, Kvist 154.

Specimen summary: L

Specimen summary: US

Specimen summary: BRG

Guyana, Republic ofJenman 1288K
Citation: Guyana, Republic of, Potaro R., Sheenabowa, Jenman 1288.

Specimen summary: K

Guyana, Republic ofSandwith 1509L, K, NY
Citation: Guyana, Republic of, Potaro R., Waratuk portage, Sandwith 1509.

Specimen summary: K

Specimen summary: L

Specimen summary: NY

Guyana, Republic ofForest Department 2547K
Citation: Guyana, Republic of, Upper Demerara R., Kumuparu Cr., near Essequibo R., Forest Department 2547.

Specimen summary: K

Guyana, Republic ofMaguire & Fanshawe 32592K, US, NY
Citation: Guyana, Republic of, Upper Mazaruni R., Imbaimadai, Maguire & Fanshawe 32592.

Specimen summary: K

Specimen summary: NY

Specimen summary: US