dcsimg

Comprehensive Description

provided by North American Flora
Eriocaulon lacustre Ruhl. Repert. Sp. Nov. 22: 33. 1925
Stems greatly elongate, floating, densely leafy throughout; leaves very narrowly linear, eapillaceous toward apex, plane, lax, 7-12 cm. long, 0.5-0.6 mm. wide at the middle, fenestrate, glabrous; peduncles numerous, umbellate-congested in groups of 10-16 at apex of stem, compressed in drying, lax, not twisted, 3.5-6[-25?] cm. long, erect, 3-costate, glabrous; sheaths rather close-fitting, 3-4 cm. long, fenestrately many-nerved, glabrous, obliquely split at apex, the blade short, erect, and acute; heads nigrescent, hemispheric or finally depressed-globose, compressed in drying, 2-4 mm. in diameter; involucral bractlets olivaceous-nigrescent, broadly obovate or suborbicular, acute or subacute, glabrous; receptacle glabrous; receptacular bractlets similar to the involucral ones, but narrower, navicular, puberulent at the very apex on the back, calvescent in age; staminate florets: sepals 3, olivaceous-nigrescent, unequal, spathaceousconnate at the very base, slightly puberulent at apex, finally glabrescent, the central one broader and obtuse, the lateral ones subacute; petals 3, small, the central one largest, black-glanduliferous and puberulent at apex, the lateral ones inconspicuous; anthers 6, black; pistillate florets: sepals 3, subhyaline, ovate, very slender, rather acute, glabrous; petals 3, linear, whitish, rather obtuse, glanduliferous, slightly puberulent at apex; ovary 3-ovulate.
Type locality: Laguna de la Maquina ("Maquina de Tarafa"), Pinar del Rio City, Pinar del Rio, Cuba {Ekman 17877).
Distribution: Known only from the type collection.
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bibliographic citation
Albert Charles Smith, Harold Norman Moldenke, Edward Johnston Alexander. 1937. XYRIDALES. North American flora. vol 19(1). New York Botanical Garden, New York, NY
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Comprehensive Description

provided by North American Flora
Eriocaulon melanocephalum Kunth, Entim. PI. 3: 549. 1841
Stems elongate, floating, simple, whitish, 7-30 cm. long, about 1.5 mm. in diameter, densely leafy throughout; leaves very narrowly linear, alternate, lax, fenestrately 1-nerved, 4-10 cm. long, uniformly 0.2-0.5 mm. wide, glabrous; peduncles borne in umbels of 10-30 at apex of stems, 2.5-15 cm. long, 5-costate, glabrous; sheaths membranous, 2-3 cm. long, many-striate, not twisted, glabrous, obliquely split at apex, finally incised-lacerate; heads small, nigrescent, hemispheric or subglobose, 2.5-4 mm. in diameter; involucral bractlets grayish-nigrescent, obovate, very obtuse, glabrous; receptacle glabrous; receptacular bractlets similar to the involucral ones, concave and acute; staminate florets: sepals 3, olivaceous-nigrescent toward apex, obovate-spatulate, very obtuse, glabrous, spathaceous-connate toward base; petals 3, subequal, oblong-ovate, glanduliferous, glabrous; stamens 6; anthers black; pistillate florets: sepals 3, obovate, nigrescent, concave, slightly connate, glabrous; petals 3, hyaline, spatulate, obtuse, black-glanduliferous, glabrous; style and stigmas short.
Type locality: Sao Paulo, Brazil (Sellow).
Distribution: Cuba; also in French Guiana and Brazil.
license
cc-by-nc-sa-3.0
bibliographic citation
Albert Charles Smith, Harold Norman Moldenke, Edward Johnston Alexander. 1937. XYRIDALES. North American flora. vol 19(1). New York Botanical Garden, New York, NY
original
visit source
partner site
North American Flora