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1.
Gaultheria marronina, a new species from the Hengduan Mountain chain of western Sichuan Province, China, is described and illustrated. This species is similar to G. bryoides P. W. Fritsch & L. H. Zhou from the Gaoligong Mountains in its white fleshy calyx with a maroon capsule but differs in its stem setae 0.34–0.50 mm long, petioles 0.4–0.6 mm long, leaf blades 5.1–6.2 × 2.1–3.1 mm, overwintering flower bud pedicels 0.6–0.8 mm long, calyx lobes 2.2–3.0 mm long, and usually slightly open fruiting calyx, among other characters. The species is known only from two widely separated unprotected populations and is categorized as endangered.  相似文献   

2.
A new species of Rubiaceae, Spiradiclis glabra, is described and illustrated from China. The species is most similar to S. fusca, but differs by having 5–7 pairs of adaxially unconspicuous secondary veins in the leaves, stipules 2–5 mm long, calyx lobes ovate‐triangular, corollas slightly purple–reddish, tubes 13–15 mm long, inside with a pubescent ring of long hairs at the throat, and stamens near the base in long‐styled form. The conservation status of this new species was assessed as ‘Vulnerable’ (VU) according to IUCN.  相似文献   

3.
Argostemma bachmaense, a new species from central Vietnam, is described and illustrated here. The new species is most similar to A. laoticum and A. vietnamicum but can be distinguished from the latter two by having a well-developed internode with leaf pairs separately arranged along stem, isophyllous or slightly anisophyllous leaves, an oblanceolate to spatulate lamina with attenuate base and lateral veins with 4–5 pairs prominent on abaxially, a terminal, solitary flower, an absent bract, narrowly ovate or broadly lanceolate, 8.5–10.5 × 2.8–4.2 mm petals, 6.5–7.5 mm long stamen with yellow anther, a 8.5–9.5 mm long, exerted style and a globose stigma. Information on ecology, phenology and preliminary conservation assessment of the proposed new species are provided. In addition, we also provide an identification key to the nine Argostemma species found in Vietnam.  相似文献   

4.
Pterygiella trichosepala (Orobanchaceae) is described and illustrated as a new species endemic to Yunnan, southwest China. It grows in calcareous grasslands or scrubs at elevations of 2000–2600 m a.s.l. This new species is closely related to P. nigrescens Oliv., but clearly differs from the latter by being pilose–hirsute throughout, with stems simple or rarely branched, 10–30 cm tall, and leaves 10–20 mm long and 3–6 mm wide (with L/W ratio 3.5–5.0), racemose inflorescences, and calyx 13–20 mm long and 8–13 mm in diameter; moreover its seed micromorphological features are significantly different from those of P. nigrescens.  相似文献   

5.
Andrew McDonald 《Brittonia》1991,43(2):120-122
A new species ofArgemone (Papaveraceae),A. subalpina, is recognized from the subalpine glades of Sierra Peña Nevada, Nuevo León, México. It is the first member of the poppy family to be associated with timberline vegetation in the New World. The new taxon is closely related toA. platyceras of the Mexican transvolcanic belt, but differs by retrorse cauline spines, broadly ellipsoid flower buds to 20 mm long, caudate sepal norns 3–5 mm long, and recurved fruit spines.  相似文献   

6.
Primulina guangxiensis Yan Liu & W. B. Xu, a new species of Gesneriaceae from Guangxi, China, is described and illustrated. The new species is related to Primulina tabacum Hance, but differs in the leaf blade being obliquely ovate to obliquely oblong‐ovate, 2.5–6.0×1.3–4.3 cm, eith margin entire to repand and base inequilateral, petiole slimly terete, 1.5–6.0 cm long, ca 2–3 mm across, cymes 1–2‐branched, 1–5‐flowered and corolla tube hypocrateriform, 20–25 mm long, 2 mm across. The new species is rare, currently known only from one site in a karst cave in western Guangxi.  相似文献   

7.
A new species of Capparaceae, Capparis longgangensis X. L. Mo & X. S. Lee ex Y. S. Huang is described and illustrated. The new species is similar to C. micracantha DC., but differs from it by the following characteristics: twigs, gynophore, outer surface of sepals and persistent style densely yellow–brown pannose, leaves densely yellow–brown pannose on both surfaces when young, abaxial surface thinly yellow–brown pannose when mature, petal thinly yellow–brown pannose, fruit 5–7 mm long, ca 6 mm in diameter, apical persistent style 3–4 mm long.  相似文献   

8.
Stromanthe bahiensis Yoshida‐Arns, Mayo & J. M. A. Braga sp. nov. (Marantaceae) is described as an endemic to the Atlantic Forest coast of southern Bahia State in Brazil. It is similar to S. hjalmarssonii (Körn.) Petersen, which is restricted to Central America, but differs from it by the following characteristics: petiole 14–70 cm long, leaf blade oblong‐ovate to ovate‐lanceolate, fertile bracts 18–30×2–4 mm, narrowly lanceolate to ovate‐lanceolate, sepals 4–6 mm long, corolla lobes 3.0–3.5 mm long, outer staminodes 2.0–3.5×1–2 mm, pale bluish or purplish, callose staminode 2–3×1–2 mm, cucullate staminode 2–3 mm long and ovary hirsute. The new species is described and illustrated with diagnostic characters, taxonomic comments and remarks on its conservation status.  相似文献   

9.
Zornia subsessilis, a new species from Serra do Cabral, Minas Gerais State, Brazil, is described and illustrated on the basis of field and herbarium studies. It belongs to Zornia section Zornia of subgenus Zornia and it appears to be restricted to “campo rupestre” (rocky fields) within the “cerrado” biome. This new species is characterized by its sessile to subsessile leaves, fruits with articles 4 to 5 mm long and with bristles up to 3.5 mm long.  相似文献   

10.
报道了酢浆草科(Oxalidaceae)感应草属(Biophytum DC.)的1个中国新记录种——长梗感应草[Biophytum reinwardtii(Zucc.)Klotzsch],提供了其形态描述和标本照片,并对其后选模式作了选定。该种新发现于中国西南部中缅边境的盈江县。长梗感应草与感应草[B.sensitivum(Linn.)Candolle]最为近似,但前者的花梗在花期长5~7mm,而后者的花梗长约1mm,两者容易区别。  相似文献   

11.
Onobrychis dushanbensis Ranjbar, Vitek & Karamian, a new Fabaceae species endemic to Tajikistan, is described and illustrated. The new species belongs to Onobrychis Miller subgen. Sisyrosema (Bunge) Grossheim sect. Hymenobrychis DC. It is closely related to O. chorassanica Bunge and O. seravschanica B. Fedtsch., but is easily distinguished by its purple flowers with darker venation (vs yellowish with purple venation), with wings 9–10 mm long (vs wings 4–5 mm long) and bracts 14–15 mm long (vs bracts 4–5 mm long). The relationships between the new and closely related species are discussed.  相似文献   

12.
Abstract. Although the reproductive biology and early life‐history stages of deep‐sea corals are poorly understood, such data are crucial for their conservation and management. Here, we describe the timing of larval release, planula behavior, metamorphosis, settlement, and early juvenile growth of two species of deep‐sea soft corals from the northwest Atlantic. Live colonies of Gersemia fruticosa maintained under flow‐through laboratory conditions released 79 planulae (1.5–2.5 mm long) between April and early June 2007. Peak planulation in G. fruticosa coincided with peaks in the chlorophyll concentration and deposition rates of planktic matter. Metamorphosis and settlement occurred 3–70 d post‐release. The eight primary mesenteries typically appeared within 24 h, and primary polyps grew to a height of ~6–10 mm and a stalk diameter of ~1 mm within 2–3 months. Planulae of Duva florida (1.5–2.5 mm long) were extracted surgically from several colonies and were successfully reared in culture. Primary polyps reached a height of ~3–4 mm within 2–3 months. No budding of primary polyps was observed in either species over 11–13 months of monitoring, suggesting a very slow growth rate.  相似文献   

13.
A new species of Dendrocalamus, D. longiligulatus N. H. Xia & V. T. Nguyen, is described and illustrated. This species is distinguished from D. pachystachys Hsueh & D. Z. Li and D. jianshuiensis Hsueh & D. Z. Li by its inconspicuous culm sheath auricles, margins with 8–10 mm long fimbriations, fimbriate ligules of culm sheath 11–14 mm long, palea with 3 veins between and 1 vein on either side of the keels, and blunt paleaceous apex.  相似文献   

14.
The new series Elatostema section Elatostema series Albopilosoides Q.Lin & L.D.Duan (Urticaceae) is described, and two new species of Elatostema, namely Elatostema albopilosoides Q.Lin & L.D.Duan and Elatostema purpureum Q.Lin & L.D.Duan. from south Guizhou province, south‐west China are described and illustrated. Both species were found growing only at the base of a large limestone chamber at an altitude of c. 800 m. Elatostema albopilosoides is morphologically similar to E. albopilosum W.T.Wang, but differs by having female inflorescences with peduncles 10–60 mm long (0–1.5 mm long in E. albopilosum) and receptacles 7–27 mm long, 7–24 mm wide (E. albopilosum: 1–4 mm long and 1–3 mm wide). Elatostema purpureum is also morphologically similar to E. albopilosum, but has stipules 5–6 mm long, 0.8–1.5 mm wide (4–7 mm long, 1.5–2.8 mm wide in E. albopilosum) and leaf blades obliquely elliptical to obliquely oblong‐obovate, 3.5–7.5 mm long and 1.5–2.5 mm wide (obliquely narrowly oblanceolate‐oblong, 12–17 cm long, 3–5 cm wide in E. purpureum:). © 2008 The Linnean Society of London, Botanical Journal of the Linnean Society, 2008, 158 , 674–680.  相似文献   

15.
The subtidal brown algal species Sporochnus dotyi Brostoff (Sporochnales, Phaeophyceae), which has been regarded as a Hawaiian endemic, is reported from Kushimoto, Kii Peninsula, Pacific coast of central Honshu, Japan, for the first time outside Hawai'i. The species grew on subtidal rocks ca. 5–20 m deep attached by a small conical holdfast. The erect thalli were 5–30 cm high, terete, robust and alternately branched in 1–2 orders. When mature, pedicellate receptacles developed on the branches, and formed elliptical sori 1 mm long with a pedicel 3–5 mm long. The apical parts of the thalli and the receptacles were terminated with a tuft of simple assimilatory filaments of up to 4 mm long and showed prominent green to yellow underwater iridescence. Reproductive filaments (paraphyses) were densely packed, simple, up to 200 μm long and bore 4–6 mostly unilateral unilocular zoidangia 20–22 μm long and 5–6 m in diameter. In the genetic analyses, the Sporochnus alga from Kushimoto had partial rbcL sequence identical to S. dotyi from Hawai'i. The cox3 phylogeny revealed that this alga formed a fully supported clade with S. dotyi. Therefore, we identified the alga from Kushimoto as S. dotyi. This finding of S. dotyi from Japan, together with the recent reports of the mesophotic macroalgae Ryuguphycus kuaweuweu (=Umbraulva kuaweuweu), Ulva iliohaha and Newhousia imbricata from various localities in the Pacific Ocean including Japan, suggest closer biogeographical connections of subtidal/mesophotic macroalgae in the Pacific than previously recognized.  相似文献   

16.
17.
Onosma maculata Ranjbar & Almasi, a new Boraginaceae species endemic to Iran, is described and illustrated. The new species belongs to Onosma sect. Onosma subsect. Onosma. It is closely related to O. nervosa Riedl, but is easily distinguished by its spotted stem and peduncle (vs no spots), leaves 14–23 cm long (vs leaves 4–12 cm long), pedicel 5–15 mm long (vs pedicel 3–5 mm long), higher density of hairs, and glabrous nutlet (vs villous). Moreover, meiotic chromosome number and behavior were studied in two populations of the new species and it was found to be diploid with 2n = 2x = 16.  相似文献   

18.
Laboratory studies were done to determine the numbers of cabbage root fly (Delia radicum L.) (Diptera: Anthomyiidae) eggs eaten by sixty species of ground beetles (Coleoptera: Carabidae) collected from a range of habitats. For 35 species that were between 2.7 mm and 10 mm long, there was a linear relationship between the numbers of eggs eaten and beetle length. For each 1 mm increase in length above 2.7 mm, an additional 18 eggs were eaten/beetle/day. Eight further species within the above size range did not eat any fly eggs, as these species are known to be either phytophagous or to feed on moving prey. Large numbers of eggs were eaten by beetles in 13 of the 25 genera tested. Based on size, maximum numbers of eggs were eaten by 7 species of Agonum Bonelli, 5 species of Amara Bonelli and seven species of Bembidion Latreille. Only one of the 6 species of Pterostichus Bonelli tested, P. strenuus (Panz.), ate the expected numbers of eggs, the other species being too large to feed from such small prey items as cabbage root fly eggs. The numbers of beetles larger than 10 mm that ate eggs was highly variable and so 10 mm was considered the upper size limit of carabid predators of cabbage root fly eggs.  相似文献   

19.
Primulina minor from the Daoxian county, Hunan province in China is described. This new species is similar to Primulina jingxiensis (Yan Liu, W. B. Xu & H. S. Gao) W. B. Xu & K. F. Chung and P. longzhouensis (B. Pan & W. H. Wu) W. B. Xu & K. F. Chung, but differs by its number of leaves (4–6), broadly ovate, orbicular‐ovate or orbicular leaf blade, 2–4 cymes, short peduncle (1.8–2.0 cm long), white (or white with light purple tinge) corolla, small corolla (8–10 mm long), 3 staminoides of which the lateral ones are short (0.75–0.90 mm long) and adnate to 1.6–1.7 mm above the corolla base.  相似文献   

20.
Fishelson, L., Delarea, Y. and Goren, M. 2012. Comparative morphology and cytology of the eye, with particular reference to the retina, in lizardfishes (Synodontidae, Teleostei). —Acta Zoologica (Stockholm) 93 : 68–79. The retinas of nine species of lizardfishes (Synodontidae) are composed of double cones, single cones, and rods. The cones are 16–28 μm long, and their number in the fundus of adult Synodus variegatus reaches ca. 32,900 mm2 (varying from ca. 300,000 to ca. 390,000 in a 10 mm2 of the retina), while in Saurida spp., they number ca. 12,000–14,000/mm2. The cone ellipsoids are with up to 600 mitochondria, 0.5–1.6 μm in diameter. The rods are 30–50 μm long; their outer segments 0.6–1.2 μm thick and 15–18 μm long; their inner segments elongated. Their number varies from 15 to 128 million/retina. In fish of similar dimensions but of different species, the number of visual cells in the retina differs. In all species, the eyes increase from 2.0 mm in diameter in the smallest fish studied to 12 mm in the largest one. With eye growth, the retina in the various species increases from ca. 3.8 mm2 in the smallest fish to ca.160.0 mm2 in the large Saurida macrolepis. The possible ecological aspects of the observed phenomena are discussed.  相似文献   

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