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Roseta basal
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Se refiere a la disposición radial de las hojas en la base de una planta. |
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Rosette
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An arrangement of leaves radiating from the base of the stem and usually placed close to the ground. |
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Rostellum (plural = rostella)
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The portion of the stigma of some Orchidaceae that separates the anther from the fertile part of the stigma and aids in gluing the pollinia to the pollinators; a small beak. |
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Rostelo
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En algunas Orchidaceae, es la porción del estigma que separa a la antera de la parte fértil del estigma y ayuda a pegar el polinio a los polinizadores; es un pico pequeño. |
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Rostrate
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With a beak or beaked. |
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Rostrum
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Beak. |
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Rosulate
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Referring to a cluster of leaves arranged in a rosette. |
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Rotate
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Disk-shaped or flat and circular, usually referring to a sympetalous corolla with a short tube and very widely spreading lobes. |
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Rounded
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Referring to a leaf blade that is curved at the apex with an angle greater than 90 degrees at the point where the two sides meet. |
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Rudimentary
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Referring to a structure or organ arrested at an early stage of development, e.g., when a stamen no longer produces viable pollen is called a stamen. |
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Rufous (rufescent)
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Reddish brown (becoming reddish brown). |
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Rugose (diminutive = rugulose)
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Having a wrinkled surface. |
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Rugose hypanthium
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Refers to a hypanthium with a wrinkled surface. |
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Ruminate endosperm
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Testa or seed coat folded into the endosperm; e.g., that of many species of Annonaceae, Myristicaceae, and Arecaceae. |
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Runner
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A slender stolon that periodically roots to produce an offshoot of the original plant. |
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Running buttress
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A thick, rounded buttress that extends along the ground several meters or more from the trunk. Compare with flying buttress and plank buttress. |
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Rupicolous
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Dwelling among rocks. |
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Saccate
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Saccate: Bag-like; deeply concave. In Orchidaceae this term is usually applied to the form of the lip. |
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Saco polínico
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Ver teca |
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Sagitada
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Con forma de punta de una flecha |
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Sagittate
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Shaped like an arrowhead. |
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Salient
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Raised from the surface, usually referring to veins of leaves. |
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Salient
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Markedly raised above the surface of an organ; e.g., the midrib on the abaxial side of the leaf blade in most species of neotropical Lecythidaceae. |
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Salverform
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Referring to the shape of a sympetalous corolla in which the tube is slender and the lobes are abruptly spreading and flat. Same as hypocrateriform and more frequenly used by authors than that term. |
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Samara
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An indehiscent, winged fruit; e.g., those of Machaerium spp. and Vataireopsis spp. (Fabaceae). |
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Sap
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A free-flowing exudate that can be translucent, colorless, yellow, orange, or red. It is not as thick and viscous as latex. |
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Sapling
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A young tree. A tree ceases to be a sapling after it has flowered for the first time; however sometimes trees attain large sizes before they flower and a tree over several centimeters is usually not considered to be a sapling. |
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Saponin
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A chemical compound found in plants that produces foam when mixed with water and shaken. This procedure is used by wood anatomists because the wood of some species has saponins while that of other species does not. |
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Saprófita
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Se refiere a una planta heterótrofa sin clorofila, que vive sobre materia orgánica en descomposición y que usualmente depende de una relación simbiótica con un hongo para obtener su alimento |
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Saprophyte
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A heterotrophic plant that is without chlorophyll, lives on decayed plant material, and usually depends on a symbiotic relationship with a fungus to obtain food. |
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Sapwood
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The outer functional part of the xylem, i.e., the living part of the xylem that transports water and nutrients to the leaves. Same as soft bast. |
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Sarcopachytesta
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The fleshy outer layer of a pachytesta. See pachytesta. |
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Sarcotesta
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Estructura carnosa que se origina en el tegumento y recubre a la semilla. Comparar con eleosoma y arilo. |
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Sarcotesta
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A layer arising from the integument of a seed. Compare with aril and elaiosome. |
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Sarcotesta
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A fleshy layer of the seed coat that attracts animals and aids in seed dispersal. |
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Sarmentose
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Referring to a plant that produces long, slender runners. |
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Savanna (also spelled savannah)
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A type of vegetation with scatttered shrubs and relatively small, often contorted trees with thick bark and grasses and sedges dominating the understory. |
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Savia
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Exudado que fluye en el interior de las plantas, esta puede ser transparente, sin color, o amarilla, naranja o roja |
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Saxicolous
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Referring to a plant that prefers growing in rocky habitats. |
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Scabrous
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Rough to the touch, e.g., the leaves of many species of Boraginaceae. |
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Scalariform
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Arranged as in the rungs of a ladder; ladderlike. |
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Scale
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Any thin, scarious bract or bracteole (usually representing a vestigial leaf found along the stems of some achlorophyllous plants such as species of Voyria (Gentianaceae); the bracteole subtending a flower of Cyperaceae; in pteridophytes, similar structures most commonly found on the rhizomes and stipe and less commonly on the fronds. |
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Scallop marks
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A non-technical term used to describe Irregular, shallow depressions on the external surface of bark. |
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Scandent
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Climbing. |
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Scape (scapose)
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A leafless, often bracteate peduncle that arises from near the base of the plant; e.g., in Xyris (Xyridaceae) and many terrestrial Orchidaceae. |
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Scarious
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Parchmentlike; thin and dry. |
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Scatter-hoarding
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A type of secondary seed dispersal in which some of the diaspores are carried away and intentionally buried or stored (cached) by scatter-hording animals such as agoutis (Dasyprocta spp.) while the other diaspores are eaten and digested, e.g., the dispersal of Brazil nut seeds by agoutis. Same as dysozoochorous. |
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Schizocarp
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A dry fruit that splits into several parts (each called a mericarp), each usually with a single seed; e.g., in Apiaceae, most lianas of Malpighiaceae, some Malvaceae, and Serjania spp. (Sapindaceae). |
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Scientific name
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A two word name for living or fossil orgamisms. The first is the name of the genus and the second is the specific epithet. The name of the author is usually abbreviated and placed at the end of the name. For example, Sanguinaria canadensis L. Note that the scientific name is written in italics and the author is written without italics. |
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Sclereid
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A thick-walled,lignified cell that is variable in form. |
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