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| Registros recuperados: 73 | |
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| Leenhouts, P.W.. |
| Xerospermum Blume, Rumphia 3 (1847) 99; Radlk. in Engl., Pflanzenr. 98 (1932) 936-950. – Xerospermum sect. Tetrasepalum Radlk. (in Th. Dur., Index Gen. Phan. (1887) 76, nom. nud.) in Engl. & Prantl, Nat. Pflanzenfam. 3, 5 (1895) 331, nom. illeg. (I.C.B.N. ed. 1978, art. 22.1). – Type: X. noronhianum Blume. Xerospermum sect. Pentasepalum Radlk. [in Th. Dur., Index Gen. Phan. (1887) 76, nom. nud.] in Engl. & Prantl, Nat. Pflanzenfam. 3, 5 (1895) 331. — Syntypes: X. acuminatum Radlk., X. laevigatum Radlk. |
| Tipo: Article / Letter to the editor |
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| Ano: 1983 |
URL: http://www.repository.naturalis.nl/record/526069 |
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| Leenhouts, P.W.. |
| The Flora of Australia started in 1981 and since then 8 volumes came out, including some 70 families. Before all we have to congratulate the editors with this achievement and we express our hope that it will be possible to go on like this. Eight volumes provide the possibility for a more general evaluation. First of all, just turning over the leaves of these volumes, one is struck by the balanced design, the clear typography, the amount of illustrations. However, on further consideration one feels some disappointment. Only once in a hundred years a Flora of Australia appears to be written, and accordingly it should be as good as possible. It is a pity then if you find too often mistakes, often unnecessary ones, and inaccuracies. |
| Tipo: Article / Letter to the editor |
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| Ano: 1988 |
URL: http://www.repository.naturalis.nl/record/526214 |
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| Leenhouts, P.W.. |
| The present paper, which gives some additions to H. J. Lam, The Burseraceae of the Malay Archipelago and Peninsula (Bull. Jard. hot. Buitenzorg, S. 3, vol. 12, 1932, p. 420), is based on material, belonging to the herbaria of Leiden and Bogor. The genus is restricted to the following 2 Malaysian species, one of which is new to science. |
| Tipo: Article / Letter to the editor |
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| Ano: 1952 |
URL: http://www.repository.naturalis.nl/record/524681 |
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| Leenhouts, P.W.; Widodo, Sri Hajati. |
| Though the embryo provides one of the main generic characters of Haplolobus, up till now nothing was known about its germination or seedling (blastogeny). That is why the first author, when revising the genus Haplolobus (Leenhouts, 1972) contacted Mr. J. S. Womersley, Chief Division of Botany, Department of Forests, at Lae, Papua and New Guinea, and asked him for either viable seeds, or seedlings. We are very obliged to him and to the Department of Forests for providing us with both, including herbarium and spirit material of seedlings and a herbarium specimen of the parent tree. The latter was collected under nr. NGF 49210 (Henty) at Markham Point near Lae, and could be identified as Haplolobus floribundus H. J. Lam ssp. floribundus group A. The seedlings... |
| Tipo: Article / Letter to the editor |
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| Ano: 1972 |
URL: http://www.repository.naturalis.nl/record/524672 |
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| Leenhouts, P.W.. |
| Starting point of the present study on Harpullia was the taxonomic revision of that genus by Leenhouts & Vente (Blumea 28, 1982, 1-51). The system to which that revision led is primarily intuitive and accordingly subjective. The intention of the present paper is to give a more natural system based upon more objective criteria and with the use of more scientific methods. The fundamentals of a systematic study are species and characters (see chapter 2). The species are those presented in the taxonomic revision; the characters used are tabulated in the form of a synoptic key (see chapter 2 B). In chapter 3 a survey is given of two intuitive systems, the one by Leenhouts & Vente and the preceding one by Radlkofer (1933-34). The first approach was... |
| Tipo: Article / Letter to the editor |
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| Ano: 1985 |
URL: http://www.repository.naturalis.nl/record/525629 |
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| Leenhouts, P.W.. |
| The scope of the present paper is primarily to give a taxonomical revision of the genus Canarium. Furthermore, attention has been paid to some subjects of a more general nature, mainly regarding morphology and geography, without, however, claiming completeness. The last complete revision of the genus was published by Engler in 1883 (in DC. Mon. Phan. 4, 101—151). Of course this is now for the greater part out of date. The later revisions by the same author in E. & P., Nat. Pfl. Fam. ed. 1, 34, 1896, 238—242, and ed. 2, 19a, 1931, 443—450, are not really monographs; moreover, they lost in value by the introduction of a subdivision which was mainly based upon unessential characters. |
| Tipo: Article / Letter to the editor |
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| Ano: 1959 |
URL: http://www.repository.naturalis.nl/record/525660 |
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| Balgooy, M.M.J. van; Leenhouts, P.W.. |
| The first volume of this flora appeared in 1979, followed by volume 2 in 1981 and volume 3 in 1985. The issue of volume 4 – containing the families Apocynaceae, Asclepiadaceae, Caprifoliaceae, Loganiaceae, Oleaceae, and Rubiaceae – means an important step towards the completion of Dr. A.C. Smith’s magnum opus. The revision of the large and difficult family of the Rubiaceae (co-authored by Dr. S.P. Darwin), in particular, must have given the author great satisfaction. The present volume follows the example set in the previous ones: detailed genus descriptions, elaborate keys to the species, whereas the species descriptions themselves are often extremely brief. This flora is rendered particularly useful by the extensive comments under each taxon, a testimony... |
| Tipo: Article / Letter to the editor |
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| Ano: 1989 |
URL: http://www.repository.naturalis.nl/record/524953 |
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| Punt, W.; Leenhouts, P.W.. |
| The Loganiaceae is a heterogeneous, eurypalynous family with colpate, colporate or porate pollen grains (Erdtman 1952). Some years ago Dr. Leeuwenberg, specialist in the taxonomy of African Loganiaceae, asked the senior author to undertake an investigation of the pollen grains of that family. Unfortunately that was impossible at the time because of other commitments. Later, however, a possibility presented itself for carrying out the investigation in connection with a sojourn at the Palynological Laboratory at Solna. I am much indebted to Professor Erdtman for the invitation to work at this Laboratory, for his approval of the subject, and for many discussions on pollen morphology. I am also much indebted to Dr.Leeuwenberg, Wageningen, and Dr. Leenhouts,... |
| Tipo: Article / Letter to the editor |
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| Ano: 1967 |
URL: http://www.repository.naturalis.nl/record/535125 |
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| Leenhouts, P.W.. |
| Liana dioica (?). Ramuli dense fulvo-tomentosi, glabrescentes, in partibus vetustioribus purpureo-brunnei, passim lenticellati. Folia c. 1 cm longe petiolata, elliptica, 16—20 cm longa, 9—11 cm lata, chartacea, juniora in costa nervisque fulvo-pilosa, matura subglabra, subtus sparse minute glandulosa, basi rotundata parum attenuata, apicem versus gradatim late acuminata, apice ipso obtusa, nervis utroque latere 6—8, curvatis, 2 vel 3 superioribus ante marginem conspicue arcuato-conjunctis. Inflorescentiae breviter (2—5 mm) crasseque pedunculata, ramis 2 scorpioideis c. 1½ cm longis, densifloris, breviter denseque fulvopilosis. Flores unisexuales, gemmis femineis tantum visis. Calyx 5-merus, sepalis 2½—3 mm longis, extus dense fulvo-pilosis, intus sparse... |
| Tipo: Article / Letter to the editor |
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| Ano: 1966 |
URL: http://www.repository.naturalis.nl/record/525077 |
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| Leenhouts, P.W.. |
| The kernel of this book consists of an enumeration of some 1600 publications of importance to the flora of the Mascarenes (East of Madagascar; main islands Réunion, Mauritius, Rodrigues), arranged alphabetically by author. Fairly often a short note is given on contents and importance. Counterpart to this enumeration is an extensive Subject Index which gives many different entries to the first part. The practical value of a book like the present one depends primarily on its completeness, secondarily on its selectivity. As to the first point, this is not easy to check. Comparison with the literature on some families the reviewer is acquainted with gave the impression that the enumeration is still (rather?) incomplete. Therefore, we may hope that future, ever... |
| Tipo: Article / Letter to the editor |
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| Ano: 1993 |
URL: http://www.repository.naturalis.nl/record/525637 |
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| Leenhouts, P.W.. |
| A revision of the species, comprised in the section Eu-Protium of the genus Protium from the region from Asia to Australia incl., might., in view of the elaborate publications by H. J. Lam (The Burseraceae of the Malay Archipelago and Peninsula etc., Bull. Jard. bot. Buitenzorg, S. 3, 12, 1932, p. 318—324) and J. J. Swart (A Monograph of the genus Protium and some allied genera, Rec. Trav. bot. néerl., 39, 1942, p. 211—146), seem superfluous. However, an examination of the Clemens material from New-Guinea of 1939 and of the type material of the thusfar mysterious Bursera tonkinensis Guill. justified the publication of some notes thereon. To these some remarks concerning observations on other species have been added. I am much indebted to the directors of... |
| Tipo: Article / Letter to the editor |
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| Ano: 1952 |
URL: http://www.repository.naturalis.nl/record/525789 |
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| Leenhouts, P.W.. |
| 1. The interrelations between the genera together constituting the Dimocarpus group in the tribe Nephelieae are represented in a scheme. In this scheme are added the main characters that are thought to be of phylogenetic importance. 2. A neotype.is proposed for Cubilia cubili (Blanco) Adelb., the single species of its genus. To its distribution can be added the eastern half of Borneo, incl. also the Island of P. Laut. Mention is made of a geographic clinal variation in a few macromorphological characters. 3. Lilchi is considered to comprise only one species, L. chinensis Sonn., which is subdivided into three subspecies: subsp. chinensis, the commonly grown form, cultivated for thousands of years already, apparently adapted (by nature or partly by selection... |
| Tipo: Article / Letter to the editor |
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| Ano: 1978 |
URL: http://www.repository.naturalis.nl/record/525412 |
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| Leenhouts, P.W.. |
| After my rather critical review of the first eight volumes of the Flora of Australia (Blumea 33: 510. 1988) it is a great pleasure to announce here the ninth, Volume 19. This is the first of three volumes on the Myrtaceae. It comprises the genus Eucalyptus, with 513 accepted species one of the largest in the Australian flora, and the closely allied genus Angophora with but seven species (and two presumed hybrids). This is the work of a single botanist, G.M. Chippendale, and we cannot but congratulate him. As such, the revision of a genus of this size is quite an achievement. This becomes something special if, like in the present case, the quality meets a very high standard indeed. Eucalyptus is taken here in its usual wide sense. It is divided into 92... |
| Tipo: Article / Letter to the editor |
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| Ano: 1989 |
URL: http://www.repository.naturalis.nl/record/524866 |
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| Leenhouts, P.W.. |
| Among the treasures of the Komarov Botanical Institute at St. Petersburg is a folio known as “Thunberg Icones Plantarum Japonicarem (ineditae)”. This volume contains 305 fine drawings, washed grey apart from a few that are in watercolours. Actually, known can hardly be said; like so many bound collections of pictures only a few of the institutions’ staff members with a special interest in history know of its existence, still less have ever seen it. Good photographs of these drawings (natural size, that is 37 x 26 cm) form the kernel of this work. Added are Maxomiwicz’s notes on the drawings (the great Russian 19th century botanist Maximowicz with his special interest in the East Asian flora brought some important historical collections on Japanese botany... |
| Tipo: Article / Letter to the editor |
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| Ano: 1995 |
URL: http://www.repository.naturalis.nl/record/525936 |
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| Leenhouts, P.W.. |
| Monoecious or dioecious trees, (often scrambling) shrubs, or lianas. Twigs and bark rather tough; medullary rays in twigs many, distinct; pith rather small, usually dark-coloured and often disappearing early; wood rather hard. Stipules narrowly triangular to subulate, sometimes rather early caducous. Leaves spirally arranged but usually pseudo-distichous, short-petioled, pinnatinerved; margin entire, thickened by a nerve; orbicular flat glands nearly always present on the surface of the leaf, mostly beneath in the basal part; base not rarely slightly inequilateral. Growth mode: apparently mostly in flushes. Inflorescences axillary (sometimes pseudo-terminal on leafless axillary shoots), dichotomously branched or glomerulous, sometimes reduced to 2 or 1... |
| Tipo: Article / Letter to the editor |
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| Ano: 1955 |
URL: http://www.repository.naturalis.nl/record/532553 |
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| Leenhouts, P.W.. |
| This monograph is a fine example of the thorough work we may expect from Wageningen in general, from its author in special. What present-day botanist gets the opportunity to study the material of his group from about a hundred herbaria all over the world and more than half the number of species in nature! Each species gets: nomenclature, typification and literature; an extensive description about 1 page long; short paragraphs on Distribution and Ecology; a citation of (part of) the specimens studied, including the precise locality and the herbaria; sometimes one or a few note(s); full-page drawing and map. |
| Tipo: Article / Letter to the editor |
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| Ano: 1993 |
URL: http://www.repository.naturalis.nl/record/524604 |
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| Leenhouts, P.W.. |
| This beautiful flora covers one of the world’s most arid regions, 650,000 sq. km of sand, gravel, and limestone, a desert sparsely adorned by 565 species out of 322 genera of plants. Of these, 392 species and 236 genera are native; among the most extreme desertplants there are a few endemics. The most important families in number of native species are the Compositae (50, in 33 genera), the Grasses (47, resp. 31), the Chenopodiaceae (35, resp. 17), the Leguminosae (34, resp. 16), and the Cruciferae (30, resp. 22). A comparison with Bhandari’s ‘Flora of the Indian desert’, reviewed in this same issue, is interesting: though the area covered there is much smaller (some 25,000 sq. km), the numbers of genera and species as well as the most important families... |
| Tipo: Article / Letter to the editor |
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| Ano: 1991 |
URL: http://www.repository.naturalis.nl/record/524507 |
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| Registros recuperados: 73 | |
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