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Nostocaceae Stock Photos and Images
RMW7YNFR–Star jelly (Nostoc commune) on rotting log, GWT Lower Woods reserve, Gloucestershire, UK, October.
RMW7W0EP–Star Jelly (Nostoc commune) a blue-green alga, on base of a pond, Brockhall Quarry, Herefordshire, England, July.
RM2AYJBTY–Fallen Star, star jelly, witch's butter, mare's eggs (Nostoc spec.), mass of Nostoc, Germany
RM2BNDD98–Freshwater grapes (Nostoc sp.), a blue-green algae or cyanobacteria, found in a shallow freshwater pool on an area of limestone pavement. Gait Barrows
RM2AWYPWY–Text-book of botany, morphological and physiological . ss of layers of the softened gelatinous walls ofthe mother-cell surround the daughter-cells which proceedfrom it with their gelatinous envelopes which are also stra-tified, and thus form systems of layers enclosed in oneanother. The relations of growth now pointed out in thecase of Nostocaceae and Chroococcacese are repeated, inall essential particulars, in some other groups of verysimple Algae, the cells of which contain pure chlorophyll.The peculiar bluish- or brownish-green colour which theNostocaceae share with the Chroococcaceae, is c
RMPG42TX–. Comparative morphology and biology of the fungi, mycetozoa and bacteria . Plant morphology; Fungi; Myxomycetes; Bacteriology. 410 DIVISION III.—MODE OF LIFE OF THE FUNGI, and in Sticta, and Scytouema or Stigonema in Stereocaulon. In many forms, for example in Sticta and Stereocaulon, the Nostocaceae are localised in peculiarly shaped branched or convex outgrowths from the thallus, which have received the name of cephalodia. The Alga is firmly attached to the adjoining hyphae; where the structure is a dense pseudo-parenchyma as in Endocarpon it is squeezed in between the hyphae ; where it is
RMT3W1N1–Archive image from page 80 of Die Natürlichen Pflanzenfamilien nebst ihren. Die Natürlichen Pflanzenfamilien nebst ihren Gattungen und wichtigeren Arten, insbesondere den Nutzpflanzen, unter Mitwirkung zahlreicher hervorragender Fachgelehrten begründet dienatrlichenp0101aengl Year: 1901 Nostocaceae. (Kirchner.) 73 Sect. IV. Intricata Bornet et Flahault. Lager größer, gallertig, anfangs kugelig, später zerrissen und unregelmäßig ausgebreitet; im Wasser. — A. Fäden dicht gedrängt, eng durch- einander geflochten: JV. Linckia (Roth) Bornet in Europa, Amerika, auf Java und den Sand- wichs-Inseln.
RM2AYR52E–Fallen Star, star jelly, witch's butter, mare's eggs (Nostoc spec.), mass of Nostoc in darkfield, Germany
RM2BNDD9T–Freshwater grapes (Nostoc sp.), a blue-green algae or cyanobacteria, found in a shallow freshwater pool on an area of limestone pavement. Gait Barrows
RM2AJDMKG–Elementary botany . the surface of the water.The plant is thread-like, and divided up into many short cells. Thethreads often show an oscillating movement, whence the name Oscillatoria.356. Family Nostocaceae.—This family is represented by Nostoc, whichforms rounded, slimy, blue-green masses onwet rocks. The individual plants in theslimy ball resemble strings of beads, eachcell being rounded, and several of these ar-ranged in chains as shown in fig. 170. Hereand there are often found larger cells (hetero-cysts) in the chain. Nostoc punctiformelives in the intercellular spaces of the rootsof cy
RMPG4EKN–. Comparative morphology and biology of the fungi, mycetozoa and bacteria . Plant morphology; Fungi; Myxomycetes; Bacteriology. 398 DIVISION III.—MODE OF LIFE OF THE FVNGI. filicina, and Cunningham's' Mycoidea parasitica which with some other allied Algae helps to form the species of Strigula common on evergreen leaves in the tropics. 2. Algae which are blue-green, violet and other colours, owing to the presence of phycochrome, and are often united together into large bodies by means of their gelatinous membranes. (a) Nostocaceae with their cells forming filaments : Calothrix, Ag. (Schizo- sip
RM2B01P1F–Fallen Star, star jelly, witch's butter, mare's eggs (Nostoc spec.), mass of Nostoc in darkfield, Germany
RM2BNDD9W–Freshwater grapes (Nostoc sp.), a blue-green algae or cyanobacteria, found in a shallow freshwater pool on an area of limestone pavement. Gait Barrows
RM2CHCY03–. Algæ. Vol. I. Myxophyceæ, Peridinieæ, Bacillarieæ, Chlorophyceæ, together with a brief summary of the occurrence and distribution of freshwat4er Algæ . Fig. 10. End of trichome ofCylindrospermum sp. showingthe terminal heterocyst andspore furnished with hair-likeprocesses, and the gelatinoussheath frayed around theheterocyst. The protoplas-mic connections are alsoshown through the commu-nicating pores in the end-walls of the cells. Very highlymagnified (after Phillips). HETEROCYSTS. In the filamentous families of the Nostocaceae, Scytone-maceae, Stigonemacese, and Rivulariacese, there are ce
RM2B01PY0–Fallen Star, star jelly, witch's butter, mare's eggs (Nostoc spec.), mass of Nostoc in darkfield, Germany
RM2BNDD97–Shallow pool on an area of limestone pavement containing Freshwater grapes (Nostoc sp.), a blue-green algae or cyanobacteria. Gait Barrows National Na
RMRDCEN8–. Comparative morphology and biology of the fungi, mycetozoa and bacteria . Plant morphology; Fungi; Myxomycetes; Bacteriology. 410 DIVISION III.—MODE OF LIFE OF THE FUNGI, and in Sticta, and Scytouema or Stigonema in Stereocaulon. In many forms, for example in Sticta and Stereocaulon, the Nostocaceae are localised in peculiarly shaped branched or convex outgrowths from the thallus, which have received the name of cephalodia. The Alga is firmly attached to the adjoining hyphae; where the structure is a dense pseudo-parenchyma as in Endocarpon it is squeezed in between the hyphae ; where it is
RM2AYYJ6Y–Fallen Star, star jelly, witch's butter, mare's eggs (Nostoc spec.), mass of Nostoc with interphaco, Germany
RM2BNDD9H–Shallow pool on an area of limestone pavement containing Freshwater grapes (Nostoc sp.), a blue-green algae or cyanobacteria. Gait Barrows National Na
RMREFADT–. Comparative morphology and biology of the fungi, mycetozoa and bacteria. Fungi -- Morphology; Bacteria -- Morphology. 410 DIVISION III.—MODE OF LIFE OF THE FUNGI. and in Sticta, and Scytonema or Stigonema in Stereocaulon. In many forms, for example in Sticta and Stereocaulon, the Nostocaceae are localised in peculiarly shaped branched or convex outgrowths from the thallus, which have received the name of cephalodia. The Alga is firmly attached to the adjoining hyphae ; where the structure is a dense pseudo-parenchyma as in Endocarpon it is squeezed in between the hyphae ; where it is filamen
RMRE4AKF–. Bacteria and their products. Bacteriology. 42 BACTERIA. on much the same features, but he also takes into considera- tion some of the physiological and biological characters, the nature of the processes set up by them, the resulting products and the nature of the division. VAN TIEGHEM'S CLASSIFICATION. Van Tieghem places all the schizomycetes in a family which. Photo-micrograph of Bacillus Figuraus Leptothrix and rod forms, x looo. he calls bacteria, a family closely related to the nostocaceae apd the oscillaria of the Algae; he divides them into micro- cocci ; bacteria or short rods ; bacil
RMRDCEPR–. Comparative morphology and biology of the fungi, mycetozoa and bacteria . Plant morphology; Fungi; Myxomycetes; Bacteriology. 398 DIVISION III.—MODE OF LIFE OF THE FVNGI. filicina, and Cunningham's' Mycoidea parasitica which with some other allied Algae helps to form the species of Strigula common on evergreen leaves in the tropics. 2. Algae which are blue-green, violet and other colours, owing to the presence of phycochrome, and are often united together into large bodies by means of their gelatinous membranes. (a) Nostocaceae with their cells forming filaments : Calothrix, Ag. (Schizo- sip
RMRPWMD8–. The algae. Algae. Fig. 171 Nostoc. A, portion of colony of N. linckia ( x 400). B, C, germinating hormogones of N. puncttforme ( x 900). (After Geitler.) NOSTOCACEAE: Cylindrospermum (cylindro, cylindcT ;spermum, seed). Fig. 172 A characteristic feature of this genus is the large spore which develops next to the heterocyst at one or both ends of a filament. The outer wall of the spore is often papillate.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfect
RMRE2N9Y–. Elementary botany. Botany. 164 MORPHOI.OG Y. the soil at the bottom of the pool, and as gas becomes entangled in the mat of threads, it is lifted from the bottom and floated to the surface of the water. The plant is thread-like, and divided up into many short cells. The threads often show an oscillating movement, whence the name Oscillatoria. 356. Family Nostocaceae.—This family is represented by Nostoc, which forms rounded, slimy, blue-green masses on wet rocks. The individual plants in the sUmy ball resemble strings of beads, each cell being rounded, and several of these ar- ranged in chai
RMRPWMCR–. The algae. Algae. Fig. 171 Nostoc. A, portion of colony of N. linckia ( x 400). B, C, germinating hormogones of N. puncttforme ( x 900). (After Geitler.) NOSTOCACEAE: Cylindrospermum (cylindro, cylindcT ;spermum, seed). Fig. 172 A characteristic feature of this genus is the large spore which develops next to the heterocyst at one or both ends of a filament. The outer wall of the spore is often papillate.. Fig 172 Cylindrospermum. A, C. ?7jajus ( x 680). B, C. stagnale ( X 340). (After Geitler.) Stigonematales The members of this order, which is not large, form branched threads, sometimes wit
RMRDX3Y6–. Lichens. Lichens. LICHEN ALGAE 53 two genera form the gonidia in the family Pyrenopsidaceae. Gloeocapsa polydermatica Kiitz. has been identified as a lichen gonidium. Fam. NOSTOCACEAE. Filamentous algae unbranched and without base or apex. NoSTOC Vauch. Composed of flexuous trichomes, with intercalary heterocysts (colourless cells) (Fig. i8). Dense gelatinous colonies of definite. Fig. i8. Examples of Nostoc. N. Linckia Bom. A, nat. size; B, small portion X 340 ; C, N. coerulescens Lyngbye, nat. size (after West).. Please note that these images are extracted from scanned page images that may
RMRPWMDM–. The algae. Algae. Fig. 170 Rivularia atra. a, plants on stones ( x f). b, transverse section of thallus ( x 9). c, single trichome in sheath ( x 300). (a, b, after Newton; c, original.) near the base of the trichomes, but they are diffluent farther up. The heterocysts are basal and in the closely aUied genus Gloeotrichia spores are produced next to them. * Nostocaceae: iV(?5^oc (used by Paracelsus). Fig. 171 The gelatinous thallus is soUd or hollow, floating or attached, and varies much in size and shape. The spheres usually break open when mature and give rise to a flat expanse. There is a
RMRCHTXD–. Die Natürlichen Pflanzenfamilien nebst ihren Gattungen und wichtigeren Arten, insbesondere den Nutzpflanzen, unter Mitwirkung zahlreicher hervorragender Fachgelehrten begründet. Botany. 70 Nostocaceae. (Kirchner.) 20. Microcoleus Desmazieres. Vaginaria Gray, Chthonoblastus Kützing). Fäden meist aus langen Zellen bestehend, am Ende verdünnt wenigstens bei gut entwickelten Exemplaren), in großer Anzahl und eng bei- sammen liegend, in farblosen ungeschichte- ten, schleimigen, mit einander verklebten Scheiden*) eingeschlossen. Etwa 20 Arten im Meere und Süß- wasser, weniger auf feuchter Erde, al
RMRCHTWT–. Die Natürlichen Pflanzenfamilien nebst ihren Gattungen und wichtigeren Arten, insbesondere den Nutzpflanzen, unter Mitwirkung zahlreicher hervorragender Fachgelehrten begründet. Botany. Nostocaceae. (Kirchner. 75 Nordamerikas schwimmend und bisweilen eine Wasserblüte bildend, mit Gasvakuolen in den Zellen. 7. Cylindrospermum Kiitzing. Fäden scheidenlos, kurz, durch ausgeschiedenen Schleim zu einem ausgebreiteten Laer von unbestimmter Form zusammengehalten; vege-. Fig. 50. A Isocystis messanensis Bzi. (350/1). — B Wollea saccata B. et Fl. (Natürl. Gr. und 250/1). — O^Nodularia üarveyana Thur.
RMRCHTXA–. Die Natürlichen Pflanzenfamilien nebst ihren Gattungen und wichtigeren Arten, insbesondere den Nutzpflanzen, unter Mitwirkung zahlreicher hervorragender Fachgelehrten begründet. Botany. Nostocaceae. (Kirchner.) 73 Sect. IV. Intricata Bornet et Flahault. Lager größer, gallertig, anfangs kugelig, später zerrissen und unregelmäßig ausgebreitet; im Wasser. — A. Fäden dicht gedrängt, eng durch- einander geflochten: JV. Linckia (Roth) Bornet in Europa, Amerika, auf Java und den Sand- wichs-Inseln. — B. Fäden locker verschlungen, leicht gekrümmt: JV. piscinale lvützing, Dauer- zellen oblong, in Eur
Search Results for Nostocaceae Stock Photos and Images (36)
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