New PDF release: A revision of Clavija - Opera Botanica 107 (Theophrastaceae)

By Bertil Ståhl.

ISBN-10: 8788702561

ISBN-13: 9788788702569

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Additional info for A revision of Clavija - Opera Botanica 107 (Theophrastaceae)

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Llamativamente grisáceos. , con surcos transversales cada 1,5 cm. Espinas algo arqueadas hacia arriba, ca. 2,5 cm, negras (grises a violáceo-oscuro), subuladas, con base bulbosa; radiales 610, en pares laterales, y una inferior; centrales 2-4. Flores subterminales, 3 cm long. , urneiformes, exteriormente con pelos blancos y cerdas rojizas. Tépalos lanceolados, agudos, amarillos, rosados o cobrizos. , amarillo hasta rosado, estigma ca. 8lobulado, amarillo (Villicúm), rosado y hasta rojo (Marayes).

Nom. Tallos simples, ovoides, 10 cm alt. ; costillas 10-13, algo onduladas, bajas. ; centrales 1-2, hasta 3 cm, negras hasta rojo-claro, grisáceas por decoloración. Flores apicales, amarillas o algo rosadas o castañas, 3,5 cm long. y diám. Fruto ca. 1 cm diám. Semillas reniformes, muy rugosas. Especie de distribución relativamente amplia para este género. , en la ladera E de la Precordillera y Cordillera. , no encontrado en W) es muy pobre (un fragmento de costilla con pocas areolas). Observada en varios departamentos en SJ (Iglesia: Agua Negra, ALC 31154; Sarmiento, Ullúm y Zonda,).

1. P. sanjuanensis A’. Epidermis verde o verde-grisácea, pero no gris-plateado; espinas de diferentes colores, incluso negras, en todas las direcciones, o también dirigidas hacia arriba pero no tan llamativamente. m. Estigma generalmente crema. B. Flores acampanadas, grandes; rojizas. Plantas que crecen a ca. m. 2. P. Flores urceoladas, menores, amarillas hasta castañas. m. C. Tallos ovoides; espina central más larga que las radiales, notable. 3. P. Tallos generalmente cilindráceos; espinas centrales no diferenciadas de las radiales.

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A revision of Clavija - Opera Botanica 107 (Theophrastaceae) by Bertil Ståhl.

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