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A New Species of Ceropegia L. (Apocynaceae) from Uttarakhand, Western Himalaya, India
No full textKishor, Kamal, Rawat, Gopal S., Samant, Sher S. (2022): A New Species of Ceropegia L. (Apocynaceae) from Uttarakhand, Western Himalaya, India. Phytotaxa 571 (1): 85-90, DOI: 10.11646/phytotaxa.571.1.
FIGURE 1. Ceropegia kumaonensis Kamal Kishor, G.S. Rawat & S.S. Samant a–c in A New Species of Ceropegia L. (Apocynaceae) from Uttarakhand, Western Himalaya, India
No full textFIGURE 1. Ceropegia kumaonensis Kamal Kishor, G.S. Rawat & S.S. Samant a–c. Habit; d&e. Inflorescence and flowers; f. Follicles and seeds; g&h. Corona.Published as part of Kishor, Kamal, Rawat, Gopal S. & Samant, Sher S., 2022, A New Species of Ceropegia L. (Apocynaceae) from Uttarakhand, Western Himalaya, India, pp. 85-90 in Phytotaxa 571 (1) on page 86, DOI: 10.11646/phytotaxa.571.1.7, http://zenodo.org/record/727054
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Ceropegia kumaonensis Kamal Kishor, G. S. Rawat, & S. S. Samant 2022, sp. nov.
No full textCeropegia kumaonensis Kamal Kishor, G.S. Rawat & S.S. Samant sp. nov. (Figs. 1–2) Ceropegia kumaonensis sp. nov. is closely related with Ceropegia attenuatula Bruyns (2017:429) and Ceropegia parvissima Bruyns (2017:430), but differs in having fascicled cymes or umbel inflorescence, multiple drooping flowers per node, tubeless flowers with longer corolla lobes, deep purple corona, interstaminal corona regularly toothed at cupular region, inner or staminal corona covered up to half by purple fleshy mass of outer or interstaminal corona. Type: — INDIA. Western Himalaya Uttarakhand, Almora, Bhikiyasain, Ghatti, June, 2021 K . Kishor-2512 (Holotype: BSD!, Isotype: WII!) Perennial, erect tuberous herbs. Tubers sub-globose or flattened ca. 4–5 cm in diameter, resembling potato. Stems erect, unbranched or sparsely branched, 25–80 cm in height, 0.3–0.5 cm diameter; hypogeal part of the stem white, 1.5–3 cm deep, somewhat thicker and succulent; epigeal part purple to purplish green, pubescent when young, glabrescent on maturity, cylindrical, sometimes flattened towards terminal internodes; first internode short and underground, second and subsequent internodes successively longer, 8–15 cms length, terminal internodes shorter. Leaves, opposite, linear to linear-lanceolate, sessile and variable in size; basal ones small and scaly, 0.2–0.5 cm in length; upper leaves 3–10 × 0.2–0.3 cm, opposite, margins and midrib hairy and purple, upright, apex acute. Inflorescences extra axillary, sessile, fascicled cymes or umbellate with 2–20 flowers at each node. Flowers pendulous; pedicels 3–4 cm long with ca. 0.1 cm diameter, purple and hairy; sepals 5, minute, hairy, yellowish brown, fused at the base, acute, apex turned outward. Flower bud almost linear with slightly enlarged base, spirally twisted, greenish white, dark purple at maturity. Corolla as long as pedicels, 3–4 cm long, 5–lobed, lobes divided up to base, lobes at anthesis joined at tips to form ovoid cage with acute apex or reflexed, lobes slightly broader at the base, sub-cylindrical, acute to spatulate at apex, then linear, revolute, adaxially dark purple, densely hairy throughout. Corona ca 0.5 cm across, bi-seriate; staminal and interstaminal parts fused laterally to form shallow to form cup, ca. 0.5 cm across, slightly higher than gynostegium, dark purple in colour, shiny, attractive, hairy inside glabrous otherwise; staminal corona incumbent on anther sacs more than half the length of sacs, lanceolate, yellow with deep purple triangular covering by half length. Pollinia ovoid, yellow, attached to brown corpusculum by short caudicles. Follicles paired, rarely solitary, 8–12 × 0.2–0.3 cm, erect, shiny green, turning purplish on maturity, apex acute pinkish. Seeds comose, narrowly elliptic, ca. 10 × 2 mm, light brown at centre, curved, fragile; coma ca. 2.5 cm long, white. Etymology:— The specific epithet “ kumaonensis ” is given based on the location of its type locality i.e., the Kumaon region of western Himalaya to which this species is endemic. Flowering & Fruiting:— Flowering: mid April to June; fruiting May–June. Habitat & Distribution:— Ceropegia kumaonensis grows mostly in open, relatively dry habitats along the edges of Chir pine (Pinus roxburghii Sarg.) forests having clayey-gravelly to loamy soils around 1250 m above mean sea level. So far it is known only from the type locality at Ghatti village in Almora District in Kumaon region, Western Himalaya and is therefore considered to be endemic to Kumaon region. Conservation Status:— Ceropegia kumaonensis is so far known only from the type locality. About 150 individuals were located during the extensive survey of the Bhikiyasain and Bhatrojkhan blocks and other areas of Almora District. According to IUCN 2019 Red List Criteria, the species falls under the category Data Deficient (DD). Thorough surveys are required in adjacent districts of Uttarakhand (Western Himalaya) covering similar altitudes and habitats to ascertain its distribution, size of the population, area of occupance and threat status. At the present locality most of the individuals were defoliated by an unknown caterpillar and most of leaves had small white eggs. Caterpillar defoliates the plants rapidly. Impact of this caterpillar on the natural populations is unknown. Frequent forest fires and habitat degradation are other possible threats to the species. Discussion:— Ceropegia kumaonensis falls under section Tiloris Huber (1957: 33) which is characterized by short erect geophytic herbs with discoid tuber and corolla tube nearly absent, lobes free (occasionally rotate) or remaining joined at tips (Bruyns 2017:429). This new species described here bears multiple flowers in fascicled cymes or umbellate inflorescences at each node and flowers have characteristic 3-4 cm long purple coloured ciliate corolla. This character of inflorescence is not shared by any species of reflex lobed Ceropegia reported from Northern India till date. However, this feature is shared by some reflex lobed Ceropegia species of South India. The corolla lobes of this taxon morphologically resemble with C. attenuatula and C. parvissima, having similar pattern of cilia, colour and reflex lobes. But it differs from these taxa having considerably longer height of plant, long leaves, umbel inflorescences with multiple flowers per node, flowers without tube, larger petals. These species also differ in several details of their coronas. The outer corona lobes in new species are regular toothed at cupular region while they are irregularly toothed in C. attenuatula and C. parvissima. The outer and inner corona lobes of new species also show variation in colour. The outer corona lobes are with deep purple, shiny flesh which covers inner yellow corona lobes up to half of length in triangular shape. This characteristic feature of new species is not shared by any reflex lobed Ceropegia. The morphological characters of reflex lobed Himalayan Ceropegia are compared in table 1.Published as part of Kishor, Kamal, Rawat, Gopal S. & Samant, Sher S., 2022, A New Species of Ceropegia L. (Apocynaceae) from Uttarakhand, Western Himalaya, India, pp. 85-90 in Phytotaxa 571 (1) on pages 86-88, DOI: 10.11646/phytotaxa.571.1.7, http://zenodo.org/record/727054
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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