There are three main types of venation in leaves:
Leaf Forms
Linear - narrow, several times longer than wide, and essentially of the same width throughout.
Lanceolate - much longer than wide and tapering towards the apex from a broader base.
Oblanceolate - much longer than wide, tapering towards the base instead of the apex (the opposite of lanceolate).
Oblong - nearly twice as long as broad, with the sides nearly or parallel most of their length.
Elliptic - oblong, broadest in the middle with the two ends narrowing.
Ovate - egg-shaped, with the broadest part near the base.
Obovate - opposite of ovate, with the narrower part near the base.
Cuneate - wedge-shaped, broad at the tip and tapering by nearly straight lines to an acute angle at the base.
Spatulate - oblong but tapering to a narrow base; spoon-shaped.
Sagittate - arrow-shaped; lobes at base acute and pointing downward, while the main body tapers upward to a point.
Leaf Bases
Cordate - heart-shaped.
Reniform - kidney-shaped; like cordate but rounder and broader than long.
Auriculate - a small pair of projections, or ears, usually at the base.
Hastate - halberd-shaped; lobes at base pointed and narrow and nearly at right angles to petiole.
Oblique - slanting, unequal-sided.
Leaf Tips
Acuminate - prolonged into a narrowed or tapering point.
Acute - ending in an acute angle, but not a prolonged point.
Obtuse - blunt or rounded apex.
Truncate - square end that looks cut off.
Emarginate - indented or notched.
Obcordate - inversely heart-shaped; an obovate leaf which is much more deeply notched at the tip.
Cuspidate - tipped with an elongated sharp or rigid point.
Mucronate - abruptly tipped with a small, short point; like a mere projection of the midrib.
Leaf Edges/Margins
Entire - even line, without teeth, notches, or lobes.
Serrate - cut into sharp, saw-like teeth pointing forward.
Dentate - toothed, teeth point outward instead of forward and are large.
Crenate - teeth are short and rounded; also called scalloped.
Undulate - margin of the leaf forms a wavy line, bending slightly inward and outward in succession.
Sinuate - like undulate, margin is very wavy (sinuous).
Incised - cut into sharp, deep, and irregular teeth or incisions.
Lobed - incisions do not extend deeper than halfway between the margin and the center of the blade and are rounded.
Cleft - incisions extend more than halfway between the margin and the center of the blade, and are sharper.
Deeply Lobed - incisions are even deeper, but not quite to the midrib or base of the blade.
Leaf Divisions
Simple - blade is of one piece, as in Camellia japonica . It may still be simple and be lobed or cleft, as in Hibiscus rosa-sinensis (hibiscus), Quercus shumardii(Shumard oak), and Acer rubrum (red maple).
Compound - blade is made up of a number of separate leaflets. The two principal types of compound leaves are pinnate and palmate:
Leaf Arrangements on Stem
Alternate - one leaf at each node, as in Hibiscus rosa-sinensis (hibiscus), Brunfelsia australis (yesterday-today-and-tomorrow), and Citrusspp. (citrus).
Opposite - two leaves at each node, always on opposite sides of the stem. Examples are Catharanthus roseus(periwinkle), Ixora coccinea (ixora), and Viburnum odoratissimum (sweet viburnum).
Whorled - more than two leaves at a node spaced around the stem, as in Nerium oleander (oleander) and Macadamia spp. (macadamia).
Leaf Attachments
Petiolate - petiole (leaf stalk) is present, examples are Hibiscus rosa-sinensis (hibiscus) and Quercus spp. (oaks).
Sessile - attached directly to the main stem or branch without a petiole, as in Podocarpus macrophyllus(Japanese yew) and Gloriosa superba 'Rothschildiana' (gloriosa lily).
Peltate - petiole attached to the lower surface of the leaf instead of at the base or margin, as in Tropaeolum majus (garden nasturtium).
Clasping - leaf partially encircles the stem, as in Calendula officinalis (calendula).
Sheathing - base of the leaf is wrapped around the stem like a grass leaf, as in Zea mays (corn) and Zingiber spp. (ginger).
Decurrent - leaf base extends downward to form a wing or ridge along the stem, as in Psidium guajava(guava).
Winged petiole - petiole has a leaf-like or membrane-like extension along its length, as in Citrus x paradisi (grapefruit).
Winged rachis - compound leaf stem with a membrane-like extension on both sides of the rachis, as in Rhus copallinum (winged sumac).
Stipule Types
Simple - stipules located on the sides of the petiole, as in Hibiscus rosa-sinensis (hibiscus).
Adnate - stipules which adhere to the sides of the petiole, as in Trifolium spp. (clover) and Rosa spp. (rose).
Leafy - green, leaf-like stipules which serve as foliage, as in Pisum sativum (pea) and Delonix regia(royal poinciana).
Other Leaf Types
Needle-shaped leaves - such as those in Pinus spp. (pines).
Needle-like leaves - margin of the leaf is so strongly rolled backward that the leaf appears tubular, such as in Ceratiola ericoides (Florida rosemary).
Awl-shaped and scale-like leaves - very reduced leaves, as in Platycladus orientalis (arbor vitae), Taxodium ascendens (pond cypress), and adult Juniperus silicicola (red cedar).
Leaf Textures
Succulent - juicy, fleshy, soft, and thickened in texture.
Scabrous - rough to the touch; texture of sandpaper.
Coriaceous - leather-like, tough.
Smooth (glabrous) - surface is not hairy, rough, pubescent, or scabrous.
Downy - covered with very short, weak, and soft hairs.
Pubescent - hairy.
Canescent - covered with gray or white soft hairs as in Leucophyllum frutescens (Texas sage).
Tomentose - covered with matted, woolly hairs.
Hirsute - pubescent with coarse, stiff hairs.
Hispid - rough with bristles, stiff hairs, or minute spines.
Waxy and glossy
Leathery
in Wisconsin they say 200000 leaves at one time, almost 2000 kg in 60 years lifetime.
gram plant has compound leaves.
No. There are many leaves for many plants. Just go look outside. Are the leaves on the trees the same as the leaves and the bushes? Flowers? Plants? No. There are many leaves for many plants. Just go look outside. Are the leaves on the trees the same as the leaves and the bushes? Flowers? Plants?
The shape of sunflower leaves is an egg-shaped or heart-shaped leaves. The texture is smooth, but on some sunflower leaves it is rough.
texture of santol ?
A crystal is not a texture.
Waxy and glossy
Leathery
The texture depends on the brand and the type of wig =)
Xenons a gas so It has no texture
Many plants are chosen for their "foliage" or leaves, rather than the flowers. When you have a plant with decorative foliage, it means that the leaves are interesting. Some have different colors, spots, stripes, texture.
Many plants are chosen for their "foliage" or leaves, rather than the flowers. When you have a plant with decorative foliage, it means that the leaves are interesting. Some have different colors, spots, stripes, texture.
The Sampaloc Has Many Leaves.
it is a non foliated metamorphic texture.
56 leaves ever found on a clover!