6.1.1 Lycopodium Biology LibreTexts
Observe fresh specimens and prepared slides of Selaginella and/or Lycopodium. Draw and describe the important characteristics that differentiate these plants from bryophytes, including stem and leaf structure, below ground parts, and where spores are produced. Figure \(\PageIndex{1}\): Lycopodium clavatum.
botany microscope prepared slides Stem of Lycopodium T.S.(show dicyostele) with low price and
In this article we will discuss about the anatomy of lycopodium. Also study the strobilus, arrangement of sporangia, L.S. strobilus and spores of lycopodium. Cut thin transverse sections of stem, leaf and root by inserting the material in pith, stain in safranin- fast green combination, mount in glycerine and study- under microscope.
LYCOPODIUM CLASSIFICATION, STRUCTURE OF SPOROPHYTE, REPRODUCTION, STRUCTURE OF GAMETOPHYTE AND
1. Plant body is sporophytic and the sporophyte is divisible into roots, stem and leaves (Fig. 224). 2. The genus is divisible into two subgenera, i.e., Urostachya and Rhopalostachya.
Clubmoss (lycopodium Sp.) Stem Photograph by Marek Mis/science Photo Library
Lycopodium cernuum Strobili. Plant body is the sporophyte. Differentiated into root, stem and leaves. Considering the variation in habit of different species, Pritzel (1900) divided the genus Lycopodium into two sub-genera: Urostachya. Rhopalostachya. Erect or pendant stem. Stem-Dichotomously branched. Roots arise only from base of stem.
Clubmoss (Lycopodium) Structure & Life Cycle Carlson Stock Art
In this article we will discuss about the anatomy of lycopodium. Also study the strobilus, arrangement of sporangia, L.S. strobilus and spores of lycopodium. Cut thin transverse sections of stem, leaf and root by inserting the material in pith, stain in safranin- fast green combination, mount in glycerine and study- under microscope. Stem: 1. Internally, the stem (Fig. 227) consists of a.
LYCOPODIUM CLASSIFICATION, STRUCTURE OF SPOROPHYTE, REPRODUCTION, STRUCTURE OF GAMETOPHYTE AND
2. Cortex: 3 layers in L.cerenuum 3. Outer and inner cortex is parenchymatous and middle cortex is sclerenchymatous 4. Endodermis: single layered, often with casparian thickening 5. Pericycle: One to many layered made up of parenchymatous cells 6. Stele: basically protostele Varies in different species:
LYCOPODIUM CLASSIFICATION, STRUCTURE OF SPOROPHYTE, REPRODUCTION, STRUCTURE OF GAMETOPHYTE AND
Lycopodium is homosporous and the spores are produced within large, short-stalked, reniform to somewhat sub-globose sporangia, borne singly either in the axils or on the stem, a little above the sporophylls.
Strobilus on a Lycopodium. This is on the top of the stem typically, or found branched elsewhere
This is a diagram of a section through the node (where the leaf emerges from the stem). The space in the siphonostele is called a leaf gap. It represents where vascular tissue has branched off into the leaf. (b) Dictyostele= with large, overlapping leaf gaps which dissect the vascular system into a network.
Life cycle of Lycopodium and Selaginella (Spikemoss)
Lycopodium clavatum (Fig. 538A) is a temperate to sub- tropical, terrestrial species very common on the Indian hills, specially the Himalayas. The sporophyte has a weak, prostrate stem trailing along the surface and rooted down with adventitious roots growing anywhere on the lower surface.
Whole plant illustrated
is simply a terminal shoot. The central stem bears leaves each with a sporangium. While observing through a dissecting microscope, pull leaves off the stem using teasing needles. Identify megasporophylls bearing megasporangia and microsporophylls bearing microsporangia. Crush each type of sporangium and compare the relative size of each spore.
Lycopodium Alchetron, The Free Social Encyclopedia
The Epidermis of the stem typically has Stomata. The outer Cortex usually contains Chlorenchyma. This photosynthetic tissue may contain a lot of air spaces & can be continuous with the leaves. The take home message is that the stems can make a major contribution to the total amount of photosynthesis that takes place in Lycopodium.
Lycopodium, stem, transverse section, stele
Lycopodium (from Greek lykos, wolf and podion, diminutive of pous, foot) [2] is a genus of clubmosses, also known as ground pines or creeping cedars, [3] in the family Lycopodiaceae. Two very different circumscriptions of the genus are in use.
Lycopodium obscurum longitudinal section of strobilus UWDC UWMadison Libraries
ADVERTISEMENTS: In this article we will discuss about the structure of Lycopodium with the help of diagrams. The main plant body is sporophytic. It consists of slender and branched stem, numerous small leaves (microphylls) and dichotomously- branched roots (Fig. 7.23A, B). Roots: ADVERTISEMENTS: The primary root or first formed root of the young sporophyte is […]
LYCOPODIUM CLASSIFICATION, STRUCTURE OF SPOROPHYTE, REPRODUCTION, STRUCTURE OF GAMETOPHYTE AND
In this article we will discuss about the structure of Lycopodium with the help of diagrams. The main plant body is sporophytic. It consists of slender and branched stem, numerous small leaves (microphylls) and dichotomously- branched roots (Fig. 7.23A, B). Roots: The primary root or first formed root of the young sporophyte is ephemeral, short-lived. The older plants have dichotomously.
Lycopodium obscurum or L. hickeyi (Pennsylvania clubmoss, … Flickr
Stem Leaves Roots Internal Morphology of Lycopodium Anatomy of Stem Epidermis Cortex Stele Anatomy of Root Anatomy of Leaf Reproduction in Lycopodium Vegetative Reproduction Gemmae or Bulbils Fragmentation Resting Buds Root Tubercles Distribution of Lycopodium Lycopodium is a genus of about 400 species.
6.1.1 Lycopodium Biology LibreTexts
Anatomy of Stem Anatomy of Root Anatomy of Leaf Lycopodium: Internal and External Structure Systematic Position Division- Pteridophyta Class- Lycopsida Order- Lycopodiales Family- Lycopodiacelae Genus- Lycopodium Distribution and Habitats