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| Registros recuperados: 268 | |
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| Steenis, C.G.G.J. van. |
| Evergreen trees or shrubs. Leaves simple, spirally arranged, sometimes pseudoalternate, margin entire or toothed, mostly with stellate or lepidote indumentum. Stipules O. Flowers bisexual, actinomorphic, axillary or terminal. Calyx tubular more or less adnate to the ovary; lobes if present valvate. Corolla rarely of free petals, mostly united in a basal tube, 4-7, valvate or imbricate. Stamens equal and alternate, or double the number of the petals, mostly adnate to the tube. Disk absent; anthers 2-celled, introrse, splitting lengthwise. Ovary superior, rarely semiinferior, 3—5-celled. Style 1; stigma punctiform to 3—5-lobed. Ovules l-~ in each cell, axile. Fruit capsular (rarely drupaceous) 1—~-seeded, dehiscent or not, pericarp often thick and woody or... |
| Tipo: Article / Letter to the editor |
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| Ano: 1948 |
URL: http://www.repository.naturalis.nl/record/532523 |
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| Steenis, C.G.G.J. van. |
| Floating aquatic herbs with dimorphic leaves, submerged ones opposite pinnatifid rootlike, apical ones in a rosette, rhomboid, dentate, with spongy often inflated petiole, arranged in leaf-mosaic; stipules 4-8, minute. Flowers bisexual, small, solitary, axillary, short-pedicelled, 4-merous, white or lilac. Petals imbricate. Disk present. Ovary half-inferior with 1 style and 2-4 persistent sepals turning often to thorns or horns. Fruit mostly 1-celled, 1-seeded, shell bone-hard; thorns after withering often set with barbs at the apex. Seed often producing 2-5 free germ-stalks. Distr. Several species in the Old World, but not known from Australia. |
| Tipo: Article / Letter to the editor |
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| Ano: 1948 |
URL: http://www.repository.naturalis.nl/record/532528 |
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| Backer, C.A.. |
| Shrubs or small trees, usually spiny. Leaves opposite, alternate or fascicled, exstipulate, simple, entire, penninerved, small. Flowers terminal and subterminal, sessile or nearly so, rather large, ♀, actinomorphic. Calyx thickly coriaceous, coloured, gamophyllous; tube campanulate-urceolate, adnate to the ovary and produced above it, inside with an annular thickening; segments 5-9, valvate in bud, ovate-triangular, acute, persistent. Petals the same number as calyx-lobes and alternating with them, imbricate and strongly crumpled in bud, obovate, deciduous. Stamens very numerous, inserted on the annular thickening of the calyx, deciduous; filaments incurved in bud, filiform, free; anthers dorsifixed, 2-celled; cells bursting longitudinally. Ovary entirely... |
| Tipo: Article / Letter to the editor |
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| Ano: 1948 |
URL: http://www.repository.naturalis.nl/record/532505 |
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| Brongersma, L.D.. |
| The present notes deal with a small collection of frogs that was made by Dr. P. WAGENAAR HUMMELINCK during his visits to the islands of the Leeward Group, Venezuela and Eastern Colombia. I have included in this study the specimens of Pleurodema brachyops (Cope) already present in the Rijksmuseum van Natuurlijke Historie, Leiden, and in the Zoologisch Museum, Amsterdam. The amphibian fauna of the Dutch Leeward Islands is very poor indeed. It consists of a single species Pleurodema brachyops (Cope)) that occurs in Aruba, Curaçao, Bonaire and Klein Bonaire. Bufo marinus (L.) has apparently been introduced into Aruba within the last few years (cf. p. 91). J. H. R. NEERVOORT VAN DE POLL, who visited Aruba in 1885, took a specimen of a Leptodactylus species.... |
| Tipo: Article / Letter to the editor |
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| Ano: 1948 |
URL: http://www.repository.naturalis.nl/record/506110 |
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| Brongersma, L.D.. |
| Loveridge (1944) published a key to the species and subspecies belonging to the genus Maticora Gray. This author emphasized that a much larger material than he had at his disposal should be examined, and that all records from literature should be studied, if a clear picture of the subspecies and their ranges was to be obtained. This led me to study the forms of Maticora occurring in the Netherlands East Indies. In the present paper the subspecies of Maticora bivirgata (Boie) are discussed, and some notes on Bungarus flaviceps are given, as specimens of the latter species have been referred to Maticora by several authors. The material examined by me consists of 110 specimens from the collections of the Rijksmuseum van Natuurlijke Historie, Leiden (67... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 42.82. |
| Ano: 1948 |
URL: http://www.repository.naturalis.nl/record/318769 |
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| Junge, G.C.A.. |
| During the war I was able to identify some collections of birds from Sumatra, present in the Leiden Museum. These collections were brought together by E. Jacobson and W. C. van Heurn in the Padang Highlands in 1013; by W. Groeneveldt in the same area in 1914 and 1915; bij L. P. Cosquino de Bussy and by Dr. F. C. van Heurn in Deli in 1912-1913 and 1918-1919 respectively; by C. J. Batenburg in the Palembang residency between 1918 and 1920 (many skins without exact locality) and by H. R. Rookmakers in Acheen in 1930. This paper contains remarks on those specimens, which are of more special interest. For the loan of material or for most useful information I am much indebted to Dr. H. G. Deignan (Washington), A. Hoogerwerf (Buitenzorg), J. G. van Marle... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 42.83. |
| Ano: 1948 |
URL: http://www.repository.naturalis.nl/record/318125 |
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| Ooststroom, S.J. van; Hoogland, R.D.. |
| Herbs or shrubs, sometimes parasitic, usually with twining stems, occasionally prostrate or creeping, or erect, very rarely trees, often with milky juice. Leaves mostly spirally arranged, in parasitic species absent or nearly so, usually petioled; petiole sometimes with extra-floral nectaries. Stipules absent, pseudostipules (leaves of axillary shoot) rarely present. Inflorescences mostly cymose, one- to many-flowered, with mostly opposite or subopposite bracts at the base of the cymes or under the solitary flowers; rarely racemose. Flowers generally hermaphrodite, actinomorphic, rarely slightly zygomorphic, usually 5-merous, rarely 4-merous, various in size and colour, often showy. Sepals usually free, imbricate, with quincuncial aestivation, often... |
| Tipo: Article / Letter to the editor |
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| Ano: 1948 |
URL: http://www.repository.naturalis.nl/record/532685 |
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| Backer, C.A.. |
| Annual or perennial, unarmed or spinous, bitter herbs or undershrubs, often glandular-hairy. Stem terete, farctate, with a peripheral whorl of air-vessels. Leaves spread, simple, entire, exstipulate. Flowers ♀, actinomorphic, solitary, opposite or between the leaves, or by stunting of the leaves, more or less arranged in a racemiform or paniculiform inflorescence, distinctly pedicelled, lilac blue. Calyx persistent, 5-partite to near the base, segments lanceolate, imbricate in bud, after anthesis not or hardly accrescent. Corolla gamopetalous, deeply 5-partite; limb rotate; segments imbricate in bud, oval, obtuse. Stamens 5, free, inserted in the throat of the corolla, alternating with the segments; filaments filiform from a broadened base, glabrous or... |
| Tipo: Article / Letter to the editor |
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| Ano: 1948 |
URL: http://www.repository.naturalis.nl/record/532597 |
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| Bloembergen, S.. |
| Trees or shrubs, buds with many perules. Leaves decussate, petiolate, entire, palmate or pinnate, appearing simultaneously with the flowers or later, exstipulate. Inflorescence racemose, corymbose or spicate, terminal with 2-4 leaves, or rarely terminal or axillary without leaves. Monoecious or dioecious, flowers actinomorphic, ♂ and ♀, ovary in the ♂ fls more reduced than stamens in ♀ fls. Calyx and corolla 4-5-merous. Stamens 4-10, mostly 8, hypogynous or perigynous. Disc extraor intrastaminal. Ovary superior, 2-celled, laterally flattened, each cell with 2 ovules. Fruit a samara, splitting into 2, rarely 3, winged usually 1-seeded parts. Seed without endosperm, radicle elongate, cotyledons foliaceous, or thickened, plicate, involute or flat. Distr. Ca... |
| Tipo: Article / Letter to the editor |
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| Ano: 1948 |
URL: http://www.repository.naturalis.nl/record/532578 |
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| Mayne, J.B.. |
| Sugar is one of the many primary products which has been in short supply since the end of the recent war. Present trends in production indicate a return to the productive level of 1939, but certain increases in demand indicate that the supply of this product is unlikely to reach the planned objectives within at least the next two or three seasons. |
| Tipo: Journal Article |
Palavras-chave: Crop Production/Industries. |
| Ano: 1948 |
URL: http://purl.umn.edu/9076 |
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| Registros recuperados: 268 | |
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