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A nation is a nation,is a state,is an ethnic group is a … . 总被引:1,自引:0,他引:1
Walker Connor 《Ethnic and racial studies》2013,36(4):377-400
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Angiopteris sparsisora Ching, sp. nov.
Species nova ab omnibus affinibus adhuc cognitis recedit rhizomate repente, dorsiventrali, habitu minore stipite tenui, levi, paleis brunneis lineari-lanceolatis margine
irregulariter fimbriatis peltati-fixis, pinnulis basi cuneatis vel late cuneatis, distincte
breviterque petiolulatis, soris longitudine variis, inter se separatis a margine magis remotis, paraphysibus rudimentalibus brevibus sparse praesentibus.
Tota planta 1—1.2 m alata, rhizomate repente, carnoso, cylindrico, dorsiventrali, 5—6 cm diametro, radicoso, apice frondes 2—3 emittente, stipite 35—70 cm longo, 4—8 mm crasso, levi viridi, supra medium uni-geniculato (in frondibus pinnatis usque subbipinnatis), paleis brunneis lineari-lanceolatis basi rotunda peltati-fixis margine varie fimbriatis sparse vestito; lamina stipite longiore, bipinnata aut subb ipinnata raro superne simpliciter pinnata; pinnis 2—3(—7)-jugis, ,alternis vel suboppositis, oblongis, 45—55 cm longis, 18—23 cm latis, petiolo 4—16 cm longo suffultis, basi tumidis, pinnatis vel interdum simplicibus vel basi pinnatifidis; pinnulis plerumque 8—12-jugis, alternis vel
suboppositis, patentibus, 8—18 cm longis, medio 1.5—3cm latis, lanceolatis, acuminatis,
basin versus cuneatis vel late cuneatis, breviter petiolatis, pinnula terminali confomi
paulo majore, petiolulata, hasi baud in alas decurrente, margine serrulatis; venis utrinquo distinctis, patentibus, simplicibus vel furcatis, prope marginem curvatis; pagina
frondis textura in sicco virescente, chartacea, rachi, costis, costulis venisque subtus
sparsim minuteque paleaceis. Soris breviter linearibus, 2—4 mm longis, 10—32-sporangiatis, inter se separatis, a margine 2—3 mm, remotis; paraphysibus sparsis brevibusrudimentalibus. Sporis globulosis, suparficie dense tubuculatis.
Yunnan austro-orientalis: Xichou Xian, Fadou, S. K. Wu 4203 (typus, PE), 4198,
8, October, 1962; ibidem, Z. R. Wang 566-1, 566-2, 566-3, 566-4, 566-5, 15, January,
1978; ibidem V. M. Chu 8212, 15, January, 1978. in valley under evergreen broadleaved forests, alt. 1500—1550m.
In the tropical rain forest in southeastern Yunnan, China, the members of Angiopteris Hoffm. and Archangiopteris Christ et Gies. are often growing side by side in great
abundance. In January 1978 the second writer made a botantical trip there and collected in one locality ample herbarium material of an Angiopteris, which is identical
with A. sparsisora Ching (ined.), based upon type specimens gathered by Mr. S. K. Wu
from the same locality in 1962. To our great surprise, however, this distinct taxon
reveals a number of important morphological characteristics intermediate between Angiopteris and Archangiopteris as diagnosed above.
The present species resembles Archangiopteris in small build with creeping dorsiventral rhizome, unigeniculate, thin, smooth stipe in pinnate to bipinnatifid fronds, sparingly clad in linear-lanceolate peltately affixed scales with variously fimbriate margin,
lamina 1—2 pinnate or subbipinnate, pinnules distinctly and shortly stipitate, base
cuneate or broadly cuneate, sori of different length separated from each other by broad
spaces, and rather far away (2—3 mm) from the margin, paraphyses few, rudimentary
and short, but, on the other hand, it also similar to Angiopteris in usually bipinnate
fronds, the petiole of pinnae with swollen base (blackish upon drying), short (2—4 mm
long) linear sori consisting of 5—16 pairs of sporangia and globulax spores with densely
tubucular sporoderms. All the above characteristics combined clearly indicate the species is in all likelihood a natural hybrid between Angiopteris and Archangiopteris,
pending cytological investigation and the reason for presently placing it in Angiopteris
rather than in Archangiopteris is because of the fact that in overall impression the newtaxon appears more like the former than the latter. 相似文献
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Tim Doherty 《Ecological Management & Restoration》2014,15(3):e9-e9
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Debabrata MAITY Neelima PRADHAN Gaurgopal MAITI 《植物分类学报》2007,45(3):321-323
Myrmechis bakhimensis D. Maity,N. Pradhan & G. G. Maiti (Orchidaceae),a new species from Sikkim Himalaya,is described and illustrated. The new species most closely resembles M. japonica (Reichb.) Rolfe and M. chinensis Rolfe with similar shape and size of lamina and the “T”-shaped epichile,but differs by the perfectly glabrous and eciliate floral bract,5-nerved dorsal sepal,and emarginate,mucronate epichile. 相似文献
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André F. Lotter Oliver Heiri Wolfgang Hofmann Willem O. van der Knaap Jacqueline F. N. van Leeuwen Ian R. Walker Lucia Wick 《Vegetation History and Archaeobotany》2006,15(4):295-307
Palaeobotanical analysis and radiocarbon dating of lake sediments from Bachalpsee (2265 m a.s.l.), a small lake above the present-day timber-line in the northern Swiss Alps reveals that the region was already deglaciated during the Younger Dryas. The sediment record is dominated by long-distance transported pollen that originates from lowland vegetation but the plant macrofossils give evidence of the local vegetation development. Comparison with palaeobotanical results from three sites along an altitudinal transect permits the reconstruction of the regional timber-line history. Throughout the entire Holocene the catchment of Bachalpsee consisted of a mosaic of open meadows and dwarf shrubs (Salix, Vaccinium, Rhododendron). Chironomid and cladoceran assemblages suggest that the early to mid-Holocene was the warmest interval at Bachalpsee. Comparison of the palaeobotanical results with those from the mire “Feld” (2130 m a.s.l.) in the vicinity of Bachalpsee showed that during the mid-Holocene the timber-line was formed by Pinus cembra and Picea abies with some scattered Abies alba trees and was situated close to Bachalpsee but never reached its catchment. The maximum timber-line in the Northern Alps was reached between 6000 and 3000 cal b.p. which is several millennia later than in the Central Alps. The species composition of the tree-line (Abies alba, Pinus cembra and the absence of Larix decidua) points to less continental and moister climatic conditions compared with the central Alps during the early to mid-Holocene. From 3000 cal b.p. onwards the timber-line was lowered by human deforestation with the most intense pulses of human impact occurring since the Middle Ages. The catchment of Bachalpsee has been used as alpine pasture since the Bronze Age. 相似文献
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《Parasitology today (Personal ed.)》1993,9(7):240
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Robert J. Wilson 《Journal of Insect Conservation》2010,14(4):423-424
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