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Nepenthes Deaniana
''Nepenthes deaniana'' (; after Dean C. Worcester) is a tropical pitcher plant endemic to the Philippines, where it grows at an altitude of 1180–1296 m above sea level.McPherson, S.R. 2009. ''Pitcher Plants of the Old World''. 2 volumes. Redfern Natural History Productions, Poole. The species is known only from the summit region of Thumb Peak, a relatively small, ultramafic mountain in Puerto Princesa Province, Palawan. ''Nepenthes deaniana'' has no known natural hybrids. No forms or varieties have been described. In his Carnivorous Plant Database, taxonomist Jan Schlauer treats '' N. gantungensis'', '' N. leonardoi'' and '' N. mira'' as heterotypic synonyms of ''N. deaniana''. Adolph Daniel Edward Elmer recorded a plant from Mount Pulgar (now known as Thumb Peak) matching the description of ''N. deaniana''. He made mention of this discovery in the April 20, 1912 issue of ''Leaflets of Philippine Botany'', in his formal description of '' N.&nb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thumb Peak (Palawan)
Thumb Peak is a small mountain in central Palawan, Philippines, and is the highest point in the Thumb Range. Like Mount Mantalingahan and Mount Victoria further south, Thumb Peak is part of the Mount Beaufort Ultramafics geological area, a series of ultramafic outcrops of Eocene origin that emerge in various parts of the island.Okubo, Y. 1989. The Mineral Exploration – Mineral Deposits and Tectonics of Two Contrasting Geologic Environments in the Republic of the Philippines – Consolidated Report on Palawan Area. Japan International Cooperation Agency, Metal Mining Agency of Japan and Department of Environment and Natural Resources (Philippines) Joint Committee. 182 pp. The mountain was formerly known as Mount Pulgar, a name it acquired during the Spanish Colonial period. ''Pulgar'', means ''thumb'' in Spanish, and the name was probably translated directly to English following the ousting of Spain during the Spanish–American War. The name may have arisen as a result of the m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nepenthes Mira
''Nepenthes mira'' (; from Latin ''mirus'' "wonderful") is a highland pitcher plant endemic to Palawan in the Philippines. It grows at elevations of 1550–1605 m above sea level.McPherson, S.R. 2009. ''Pitcher Plants of the Old World''. 2 volumes. Redfern Natural History Productions, Poole. ''Nepenthes mira'' was formally described by Matthew Jebb and Martin Cheek in 1998. The authors suggest that ''N. mira'' is related to the Bornean species '' N. edwardsiana'', '' N. macrophylla'', and '' N. villosa''.Schlauer, J. 2000. ''Carnivorous Plant Newsletter'' 29(2): 53. In his Carnivorous Plant Database, taxonomist Jan Schlauer treats this species as a heterotypic synonym of '' N. deaniana''.Schlauer, J. N.d''Nepenthes mira'' Carnivorous Plant Database. ''Nepenthes mira'' has no known natural hybrids. No forms or varieties have been described. References Further reading * Amoroso, V.B., L.D. Obsioma, J.B. Arlalejo, R.A. Aspiras, D.P. Capili, J.J.A. Polizon & E.B. Sum ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Attenuate
In physics, attenuation (in some contexts, extinction) is the gradual loss of flux intensity through a medium. For instance, dark glasses attenuate sunlight, lead attenuates X-rays, and water and air attenuate both light and sound at variable attenuation rates. Hearing protectors help reduce acoustic flux from flowing into the ears. This phenomenon is called acoustic attenuation and is measured in decibels (dBs). In electrical engineering and telecommunications, attenuation affects the propagation of waves and signals in electrical circuits, in optical fibers, and in air. Electrical attenuators and optical attenuators are commonly manufactured components in this field. Background In many cases, attenuation is an exponential function of the path length through the medium. In optics and in chemical spectroscopy, this is known as the Beer–Lambert law. In engineering, attenuation is usually measured in units of decibels per unit length of medium (dB/cm, dB/km, etc.) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peristome
Peristome (from the Greek ''peri'', meaning 'around' or 'about', and ''stoma'', 'mouth') is an anatomical feature that surrounds an opening to an organ or structure. Some plants, fungi, and shelled gastropods have peristomes. In mosses In mosses, the peristome is a specialized structure in the sporangium that allows for gradual spore discharge, instead of releasing them all at once. Most mosses produce a capsule with a lid (the operculum) which falls off when the spores inside are mature and thus ready to be dispersed. The opening thus revealed is called the ''stoma'' (meaning "mouth") and is surrounded by one or two peristomes. Each peristome is a ring of triangular "teeth" formed from the remnants of dead cells with thickened cell walls. There are usually 16 such teeth in a single peristome, separate from each other and able to both fold in to cover the stoma as well as fold back to open the stoma. This articulation of the teeth is termed arthrodontous and is found in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Obconic
In botany, an obconic is an inverted cone shape. The term is most frequently applied to certain fruit or hypanthium structures with the apical end attached to the stem; however, less frequently the usage may apply to the pistil structure. In the case of fungi the designation is often made to the ascospore. The use of ''obconic'' in botany dates to at least as early as the nineteenth century; however, some modern usage applies to an entire plant form, such as the shape of a whole shrub. More broadly, in geometry or design, the term can be assigned in an abstract manner to shapes in the natural or man-made world which show an inverted cone design. Botanical examples The carnivorous plant ''Nepenthes deaniana'' has pitcher elements that are obconic in shape to capture insects. The hypanthium of the western USA plant '' Heuchera rubescens'' has one subspecies with an obconic structure, while several other subspecies have alternative hypantium geometries, so that the obconic characterist ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tendril
In botany, a tendril is a specialized stem, leaf or petiole with a threadlike shape used by climbing plants for support and attachment, as well as cellular invasion by parasitic plants such as ''Cuscuta''. There are many plants that have tendrils; including sweet peas, passionflower, grapes and Chilean glory-flower. Tendrils respond to touch and to chemical factors by curling, twining, or adhering to suitable structures or hosts. History The earliest and most comprehensive study of tendrils was Charles Darwin's monograph ''On the Movements and Habits of Climbing Plants,'' which was originally published in 1865. This work also coined the term circumnutation to describe the motion of growing stems and tendrils seeking supports. Darwin also observed the phenomenon now known as tendril perversion, in which tendrils adopt the shape of two sections of counter-twisted helices with a transition in the middle. Biology of tendrils In the garden pea, it is only the terminal leaflets ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reticulate
Reticulation is a net-like pattern, arrangement, or structure. Reticulation or Reticulated may refer to: * Reticulation (single-access key), a structure of an identification tree, where there are several possible routes to a correct identification * A coloration pattern of some animals (e.g. the reticulated giraffe) * An arrangement of veins in a leaf, with the veins interconnected like a network * The endoplasmic reticulum within a cell, often resembling a net * A phylogenetic network, the result when hybrid speciation, introgression and parapyletic speciation is applied to a phylogenetic tree * Reticulated water (Australia, South Africa), water from a piped network rather than from a bore or well, see: wiktionary:reticulated water *Reticulation (metalwork), a decorative technique in metalworking See also * Reticular (other) Reticular describes a set of connective tissue, fibers, etc., in network form such as with cross-link bonds. Reticular may also refer to: * Re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Obovate
The following is a list of terms which are used to describe leaf morphology in the description and taxonomy of plants. Leaves may be simple (a single leaf blade or lamina) or compound (with several leaflets). The edge of the leaf may be regular or irregular, may be smooth or bearing hair, bristles or spines. For more terms describing other aspects of leaves besides their overall morphology see the leaf article. The terms listed here all are supported by technical and professional usage, but they cannot be represented as mandatory or undebatable; readers must use their judgement. Authors often use terms arbitrarily, or coin them to taste, possibly in ignorance of established terms, and it is not always clear whether because of ignorance, or personal preference, or because usages change with time or context, or because of variation between specimens, even specimens from the same plant. For example, whether to call leaves on the same tree "acuminate", "lanceolate", or "linear" could ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lanceolate
The following is a list of terms which are used to describe leaf morphology in the description and taxonomy of plants. Leaves may be simple (a single leaf blade or lamina) or compound (with several leaflets). The edge of the leaf may be regular or irregular, may be smooth or bearing hair, bristles or spines. For more terms describing other aspects of leaves besides their overall morphology see the leaf article. The terms listed here all are supported by technical and professional usage, but they cannot be represented as mandatory or undebatable; readers must use their judgement. Authors often use terms arbitrarily, or coin them to taste, possibly in ignorance of established terms, and it is not always clear whether because of ignorance, or personal preference, or because usages change with time or context, or because of variation between specimens, even specimens from the same plant. For example, whether to call leaves on the same tree "acuminate", "lanceolate", or "linear" could ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glabrous
Glabrousness (from the Latin ''glaber'' meaning "bald", "hairless", "shaved", "smooth") is the technical term for a lack of hair, down, setae, trichomes or other such covering. A glabrous surface may be a natural characteristic of all or part of a plant or animal, or be due to loss because of a physical condition, such as alopecia universalis in humans, which causes hair to fall out or not regrow. In botany Glabrousness or otherwise, of leaves, stems, and fruit is a feature commonly mentioned in plant keys; in botany and mycology, a ''glabrous'' morphological feature is one that is smooth and may be glossy. It has no bristles or hair-like structures such as trichomes. In anything like the zoological sense, no plants or fungi have hair or wool, although some structures may resemble such materials. The term "glabrous" strictly applies only to features that lack trichomes at all times. When an organ bears trichomes at first, but loses them with age, the term used is ''glabrescent ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nepenthes Graciliflora
''Nepenthes graciliflora'' is a tropical pitcher plant endemic to the Philippines.Cheek, M. & M. Jebb 2013. ''Nepenthes ramos'' (Nepenthaceae), a new species from Mindanao, Philippines. ''Willdenowia'' 43(1): 107–111. Long considered a synonym of '' N. alata'', it was restored as a separate species in 2013 by Martin Cheek and Matthew Jebb. It has been recorded from the islands of Bohol, Leyte, Luzon, Mindanao, Mindoro, Panay, Samar, and Sibuyan, and following the redelimitation of ''N. alata'' is the most widespread ''Nepenthes'' species of the Philippines. It is known from mossy, submontane forest, generally at altitude, though the type specimen from Sibuyan was collected at only . ''Nepenthes graciliflora'' belongs to the informal "''N. alata'' group", which also includes '' N. alata'', '' N. ceciliae'', '' N. copelandii'', '' N. extincta'', '' N. hamiguitanensis'', '' N. kitanglad'', '' N. kurata'', '' N. leyte'', '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species Description
A species description is a formal description of a newly discovered species, usually in the form of a scientific paper. Its purpose is to give a clear description of a new species of organism and explain how it differs from species that have been described previously or are related. In order for species to be validly described, they need to follow guidelines established over time. Zoological naming requires adherence to the ICZN code, plants, the ICN, viruses ICTV, and so on. The species description often contains photographs or other illustrations of type material along with a note on where they are deposited. The publication in which the species is described gives the new species a formal scientific name. Some 1.9 million species have been identified and described, out of some 8.7 million that may actually exist. Millions more have become extinct throughout the existence of life on Earth. Naming process A name of a new species becomes valid (available in zo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
