Glossary List – Lecythidaceae

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Displaying 41 - 80 out of 80 Object(s)

Term	Definition
Leaf margin doubly serrate	Leaf blades with margins with sharp teeth oriented toward the apex with each touth in turn with a smaller tooth.
Leaf margin entire	Referring to leaf blade margins that are smooth, i.e., they have no serrations or crenations.
Leaf margin erose	Referring to leaf blade margin that is jagged, i.e., uneven but not with well-defined teeth.
Leaf margin lobed	Referring to rounded projections arising from the margins of a leaf blade that are cut less than one-half the distance to the midrib of the leaf blade, e.g., the leaves of the white oak group.
Leaf margin serrate	Leaf blades with margins with sharp teeth oriented toward the apex.
Leaf opposed	Referring to an inflorescence, infructescence, or tendril arising from the stem opposite a leaf.
Leaf scar	The scar left on a stem when a leaf falls.
Leaf sheath	Tubular, inrolled base of a leaf blade or petiole that surrounds the node and a portion of the internode; e.g., in the Cyperaceae, Poaceae, and many other monocotyledons as well as in some dicotyledons.
Leaf symmetrical	Referring to the form of a leaf with the blade equal on each side of the midrib.
Leaf symmetry	Referring to the form of a leaf in relation to the midrib, if the blade on each side of the midrib is equal the leaf is symmetrical and if the blades on each side of the midrib are not equal the leaf is asymmetrical.
Leaf venation acrodromous	Referring to a type of leaf venation in which two or more primary or strongly developed secondary veins arch upward from either the base or above it; perfect acrodromous is used when these veins converge near the apex; e.g., Strychnos (Loganiaceae); imperfect acrodromous is used when these veins do not converge at the apex. Based on Hickey, 1973. For more information about leaf venation see Ellis et al, 2009.
Leaf venation actinodromous	Referring to a type of leaf venation in which three or more primary veins diverge radially from a single point either at (basal actinodromous) or above (suprabasal actinodrmous) the point of attachment of the petiole. The primary veins can either converge at the apex (perfect actinodromous) or not converge at the apex (imperfect actinodromous). Based on Hickey, 1973. For more information on leaf venation see Ellis et al., 2009.
Leaf venation basal acrodromous	Referring to a type of leaf venation in which two or more primary or strongly developed secondary veins arch upward from the base and converge at or close to the apex.. Based on Hickey, 1973. For more information about leaf venation see Ellis et al, 2009.
Leaf venation basal actinodromous	Referring to a type of leaf venation in which three or more primary veins diverge radially from a single point at point of attachment of the petiole.
Leaf venation brochidodromous	Referring to a type of leaf venation in which the secondary veins do not terminate at the margin but join to form a series of prominent arches that form a submarginal nerve; for example, in many Myrtaceae. Based on Hickey, 1973. For more information about leaf venation see Ellis et al, 2009.
Leaf venation brochidodromous	Secondaries joined together in a series of prominent arches. Based on Hickey, 1973. For more information abouit leaf venation see Ellis et al, 2009.
Leaf venation brochidodromous festooned	Referring to a type of leaf venation in which the secondary veins do not terminate at the margin but join to form a series of prominent arches that form a submarginal nerve and, in addtion, the secondary veins possess closed loops toward their apices. Based on Hickey, 1973. For more information about leaf venation see Ellis et al, 2009.
Leaf venation camptodromous	Referring to a type of leaf venation in which the secondary veins do not terminate at the margin; in one type each secondary vein connects with the seconday vein above it (brochidodromous) and in the other type the secondary veins do not connect with the secondary vein above it (eucamtodromous). Based on Hickey, 1973. For more information about leaf venation see Ellis et al, 2009.
Leaf venation camptodromous	A type of leaf venation in which the secondary veins do not terminate at the margens
Leaf venation campylodromous	Referring to a type of leaf venation in which a series of more or less equal primary veins originate from a common point at the base, arch upward, and reunite toward the apex; e.g., species of Aristolochia (Aristolochiaceae).
Leaf venation cladodromous	Referring to a type of leaf venation in which the secondary veins branch freely before they reach the margin. Based on Hickey, 1973. For more information about leaf venation see Ellis et al, 2009.
Leaf venation eucamptodromous	Referring to a type of leaf venation in which the secondary veins do not reach the margin and do not form a series of prominent arches. Based on Hickey, 1973. For more information about leaf venation see Ellis et al, 2009.
Leaf venation eucamptodromous	Secondaries upturned and gradually diminishing apically inside the margin but not connecting to the secondary above it. Based on (Hickey, 1973. For more information about leaf venation see Ellis et al. (2009).
Leaf venation flabellate	Referring to leaf venation with several to many fine basal veins that spread out from the base like a fan and divide somewhat toward the apex. Based on Ellis et al., 2009.
Leaf venation hyphodromous	Referring to a leaf blade with all but the midvein absent or not visible because the leaf blade is too fleshy for them to be seen.
Leaf venation imperfect acrodromous	Referring to a type of leaf venation in which two or more primary or strongly developed secondary veins arch upward from or above the base and do not converge at the apex. Based on Hickey, 1973. For more information about leaf venation see Ellis et al, 2009.
Leaf venation mixed craspedodromous	Referring to a type of leaf venation in which some of the secondary veins terminate at the leaf margins and the remainder of the secondary veins do not, e.g. half of the secondary veins are craspedodromous and the other half camptodromous.
Leaf venation perfect acrodromous	Referring to a type of leaf venation in which two or more primary or strongly developed secondary veins arch upward from the base or above the base and converge near the apex. Based on Hickey, 1973. For more information about leaf venation see Ellis et al, 2009.
Leaf venation reticulodromous	Referring to a leaf venation type in which the secondary veins form a network of veins soon after departing from the midrib. Based on Hickey, 1973. For more information about leaf venation see Ellis et al, 2009.
Leaf venation simple craspedodromous	Referring to a type of leaf venation in which all of the secondary veins terminate at the leaf margins.
Leaf venation suprabasal acrodromous	Referring to a type of leaf venation in which two or more primary or strongly developed secondary veins arch upward from above the base. Based on Hickey, 1973. For more information about leaf venation see Ellis et al, 2009.
Leaf venation suprabasal actinodromous	Referring to a type of leaf venation in which three or more primary veins diverge radially from a single point above the point of attachment of the petiole.
Marginal leaf vein	A leaf vein that runs more-or-less parallel to the margin of a leaf.
Odd-pinnate leaf	Pinnate with an odd number of leaflets; i.e., without a terminal leaflet. Same as imparipinnate.
Paripinnate leaf	Pinnate with an even number of leaflets; i.e., without a terminal leaflet. Same as even-pinnate and parapinnate..
Peltate leaf	Referring to a leaf blade attached to the petiole by its lower surface rather than its margin; for example species of Nymphaea glandulifera, Hydrocotyle umbellata, and those illustrated for this term.
Simple leaf	Referring to a leaf that is not divided into smaller units. Opposite of compound.
Tendril leaf opposed	A tendril that arises opposite the insertion of a leaf; for example, Parthenocissus quinquefolia and many othe species of Vitaceae.
Tripinnately compound leaf	A compound leaf divided into three parts, each of which is pinnately compound.
Unifoliolate leaf	A leaf appearing to be simple but believed to be derived from an ancestor with a compound leaf, commonly found in species of Fabaceae.