1,721,034 research outputs found
Weeding the nettles I: Clarifying species limits in perennial, rhizomatous Urtica (Urticaceae) from southern and central Chile and Argentina.
No full textWeigend, Maximilian, Luebert, Federico (2009): Weeding the nettles I: Clarifying species limits in perennial, rhizomatous Urtica (Urticaceae) from southern and central Chile and Argentina. Phytotaxa 2: 1-12, DOI: 10.11646/phytotaxa.2.1.1, URL: http://biotaxa.org/Phytotaxa/article/view/phytotaxa.2.1.
Three new species of Heliotropium sect. Heliothamnus (Boraginaceae) from Peru
No full textLuebert, Federico, Weigend, Maximilian (2012): Three new species of Heliotropium sect. Heliothamnus (Boraginaceae) from Peru. Phytotaxa 49 (1): 35-44, DOI: 10.11646/phytotaxa.49.1.6, URL: http://biotaxa.org/Phytotaxa/article/view/phytotaxa.49.1.
FIGURE 4 in Weeding the nettles I: Clarifying species limits in perennial, rhizomatous Urtica (Urticaceae) from southern and central Chile and Argentina.
No full textFIGURE 4. Urtica mollis Steud. and "U. buchtienii Ross". A, high-alpine, juvenile plant (just beginning to flower) corresponding to the type of "U. buchtienii" (Sparre 17160). B, typical, unbranched form of of U. mollis corresponding to the type specimens (Arroyo 81901).Published as part of Weigend, Maximilian & Luebert, Federico, 2009, Weeding the nettles I: Clarifying species limits in perennial, rhizomatous Urtica (Urticaceae) from southern and central Chile and Argentina., pp. 1-12 in Phytotaxa 2 on page 10, DOI: 10.11646/phytotaxa.2.1.1, http://zenodo.org/record/477609
FIGURE 2 in Weeding the nettles I: Clarifying species limits in perennial, rhizomatous Urtica (Urticaceae) from southern and central Chile and Argentina.
No full textFIGURE 2. Distribution map based on the collecting localities of herbarium specimens cited in this work. Numbered collecting points indicate type collections: 1, Urtica magellanica; 2, Urtica darwinii; 3, Urtica bracteata and U. pseudoidoica; 4, Urtica mollis; 5, Urtica diplotricha; 6, Urtica buchtienii.Published as part of Weigend, Maximilian & Luebert, Federico, 2009, Weeding the nettles I: Clarifying species limits in perennial, rhizomatous Urtica (Urticaceae) from southern and central Chile and Argentina., pp. 1-12 in Phytotaxa 2 on page 6, DOI: 10.11646/phytotaxa.2.1.1, http://zenodo.org/record/477609
FIGURE 4. Heliotropium pamparomasense. A in Three new species of Heliotropium sect. Heliothamnus (Boraginaceae) from Peru
No full textFIGURE 4. Heliotropium pamparomasense. A, Flowering branch; B, Leaf, adaxial surface; C, Leaf, abaxial surface; D, Flower, outer view; E, Flower, view of the corolla tube; F, Flower, inner view; G, Anther; H, Sepal adaxial surface; I, Sepal abaxial surface; J, Fruit, transversal view; K, Fruit, lateral view. (All from Weigend & Skrabal 5890, BSB). Drawn by Stefanie Werner.Published as part of Luebert, Federico & Weigend, Maximilian, 2012, Three new species of Heliotropium sect. Heliothamnus (Boraginaceae) from Peru, pp. 35-44 in Phytotaxa 49 (1) on page 40, DOI: 10.11646/phytotaxa.49.1.6, http://zenodo.org/record/506069
FIGURE 1. Heliotropium maranjonense. A in Three new species of Heliotropium sect. Heliothamnus (Boraginaceae) from Peru
No full textFIGURE 1. Heliotropium maranjonense. A, Flowering branch; B, Leaf, adaxial surface; C, Leaf, abaxial surface; D, Flower, outer view; E, Flower, view of the corolla tube; F, Flower, inner view; G, Sepal abaxial surface; H, Sepal adaxial surface; I, Anther (open). (All from Weigend et al. 2000/871, BSB). Drawn by Stefanie Werner.Published as part of Luebert, Federico & Weigend, Maximilian, 2012, Three new species of Heliotropium sect. Heliothamnus (Boraginaceae) from Peru, pp. 35-44 in Phytotaxa 49 (1) on page 37, DOI: 10.11646/phytotaxa.49.1.6, http://zenodo.org/record/506069
Urtica Linnaeus 1753
No full textKey to perennial rhizomatous species of Urtica present in Chile and Argentina 1 Dioecious plants (i.e., male or female clones, each clone and each aerial shoot only with one sex, rarely monoecious); achenes ovate in outline, widest below the middle; plants (stem and leaves abaxially and adaxially) densely setose, stem often flushed red .................................................................................................................... Urtica dioica - Monoecious plants; achenes subcircular in outline, widest in the middle; plants (stem and leaves abaxially and adaxially) variously setose, often sparsely so, stem green or whitish, not flushed with red............................................... 2 2 Stems densely pubescenct, white or grey, setose; abaxial leaf surface densely setose; adaxial leaf surface densely pubescent, white or grey ............................................................................................................................ Urtica mollis - Stems sparsely pubescent, light green, esetulose or sparsely setose; abaxial leaf surface esetulose or sparsely setose; adaxial leaf surface sparsely pubescent, light green.................................................................................................... 3 3 Fruiting perianth without stinging hairs ......................................................................................... Urtica magellanica - Fruiting perianth with 1 or 2 stinging hairs on the midvein of larger lobes.................................................................. ....................................................................................................... Urtica lilloi (see discussion under U. magellanica)Published as part of Weigend, Maximilian & Luebert, Federico, 2009, Weeding the nettles I: Clarifying species limits in perennial, rhizomatous Urtica (Urticaceae) from southern and central Chile and Argentina., pp. 1-12 in Phytotaxa 2 on page 6, DOI: 10.11646/phytotaxa.2.1.1, http://zenodo.org/record/477609
Urtica dioica subsp. dioica Linnaeus 1753
No full text1. <i>Urtica dioica</i> Linnaeus (1753: 984) subsp. <i>dioica</i>. <p> Lectotype (designated by Woodland, 1982: 283): <i>anon., Herb. Linnaeus 1111.8</i> (LINN!, photographs: AUB, DAO, MTMG). — Fig. 1 A.</p> <p> <i>Urtica dioica</i> subsp. <i>dioica</i> is a widespread nitrophilous weed, common throughout Europe, western Asia, northern Africa and eastern North America. It is also found on several islands in the North Atlantic (e.g., Iceland). The typical subspecies is here reported for the first time from South America, probably from introduced populations. It can be readily differentiated from the native species by its very dense pubescence of stinging hairs on the abaxial leaf veins, its usually much wider and more triangular leaves (in the weedy form found in South America) and its predominantly dioecious populations. Numerous monoecious individuals of <i>U. dioica</i> subsp. <i>dioica</i> have been reported, but these always make up only individual clones in a population, with the bulk of individuals unisexual (Heemskerk <i>et al.</i> 1998). So far, monoecious individuals have not been reported from South America. <i>Urtica dioica</i> subsp. <i>dioica</i> is likely much more common in southern South America than is reflected by the number of specimens studied, as botanists may refrain from collecting it, recognizing it as an introduced weed. It is likely to be locally common in pastures and on road sides in southern and central Chile and Argentina.</p> <p> <b>Representative specimens:</b> <b>ARGENTINA</b>: <b>Prov. Córdoba</b>, Depto. Río Segundo, Río Segundo, en “Las Compuertas”, 13.11.1970, <i>R. Subilis 1084</i> (sterile, MO). <b>CHILE</b>: <b>VIII Región, Bío-Bío</b>: Prov. Concepción, Río Bío-Bío estuary, 30 m, 36º49' S, 73º10' W, 23.08.1968, <i>C. W. O´Brien s.n.</i> (male, CONC). <b>IX Región, Araucanía</b>: Prov. Cautín, Villarica, 220 m, Jan 1962, <i>G. Montero O. 6531</i> (female, CONC). <b>XIV Región, de Los Ríos:</b> Prov. Valdivia, Valdivia, Isla Teja, 70 m, Dec. 1961, <i>H. Gunckel 38.813</i> (female, CONC).</p>Published as part of <i>Weigend, Maximilian & Luebert, Federico, 2009, Weeding the nettles I: Clarifying species limits in perennial, rhizomatous Urtica (Urticaceae) from southern and central Chile and Argentina., pp. 1-12 in Phytotaxa 2</i> on page 7, DOI: 10.11646/phytotaxa.2.1.1, <a href="http://zenodo.org/record/4776091">http://zenodo.org/record/4776091</a>
Nomenclatural Revision of Heliotropiaceae Names Linked to Southern Cone Taxa
No full textDuring the preparation of the treatment of the family Heliotropiaceae for Argentina, several names were identified as needing typification to stabilize their nomenclature. As a result, lectotypes are designated for six names (Heliophytum anchusifolium (Poir.) DC. var. angustifolium DC., Heliotropium claussenii A. DC. f. robustior Chodat, H. inundatum Sw. f. elliptica Chodat & Hassl., H. margaritense Hassl. ex I. M. Johnst., H. salicoides Cham., and Tournefortia elegans Cham.) and second-step lectotypes for two names (Heliotropium andinum Rusby and H. maximum Chodat & Hassl.). Furthermore, remarks on types of three names (Heliotropium chrysanthum Phil., H. rugosum Phil., and T. paniculata Cham.) are provided.Fil: Moroni, Pablo Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Botánica Darwinion. Academia Nacional de Ciencias Exactas, Físicas y Naturales. Instituto de Botánica Darwinion; ArgentinaFil: Mirra Gonzalez, Fabiana Belen. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Botánica Darwinion. Academia Nacional de Ciencias Exactas, Físicas y Naturales. Instituto de Botánica Darwinion; Argentina. Universidad del Salvador; ArgentinaFil: Luebert, Federico. Universidad de Chile.; ChileFil: O'Leary, Nataly Cristina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Botánica Darwinion. Academia Nacional de Ciencias Exactas, Físicas y Naturales. Instituto de Botánica Darwinion; Argentin
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