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"Tubular Androphore and section of flower of Malva Sylvestris."-Whitney, 1902

Androphore

"Tubular Androphore and section of flower of Malva Sylvestris."-Whitney, 1902

"a, a chain of motile rodlets still growing and dividing (bacilli). b, a pair of bacilli actively growing and dividing. p, a rodlet in this condition (but divided into four segments) after treatment with alcoholic iodine solution. c, d, e, f, successive stages in the development of the spores. r, a rodlet segmented in four, each segment containing one ripe spore. g2, g3, early stages in the germination of the spores (after being dried for several days); h1, h2, i, k, l and m, successive stages i, the germination of the spore." — Encyclopedia Britannica, 1910

Bacillus Megaterium

"a, a chain of motile rodlets still growing and dividing (bacilli). b, a pair of bacilli actively growing…

"Successive stages in the development of the spores." — The Encyclopedia Britannica, 1910

Bacillus Megaterium

"Successive stages in the development of the spores." — The Encyclopedia Britannica, 1910

"A rodlet segmented in four, each segment containing one ripe spore." — The Encyclopedia Britannica, 1910

Bacillus Megaterium

"A rodlet segmented in four, each segment containing one ripe spore." — The Encyclopedia Britannica,…

"Early stages in the germination of the spores (after being dried several days)." — The Encyclopedia Britannica, 1910

Bacillus Megaterium

"Early stages in the germination of the spores (after being dried several days)." — The Encyclopedia…

"Successive stages in the germination of the spore." — The Encyclopedia Britannica, 1910

Bacillus Megaterium

"Successive stages in the germination of the spore." — The Encyclopedia Britannica, 1910

"The various phases of germination of spores of Bacillus ramosus, as actually observed in hanging drops under very high powers. The spore sown at 11 A.M., as shown at a, had swollen (b) perceptibly by noon, and had germinated by 3:30 P.M., as shown at c: in d at 6 P.M., and e at 8:30 P.M.; the resulting filament is segmenting into bacilli as it elongates, and at midnight (f) consisted of twelve such segments." — The Encyclopedia Britannica, 1910

Bacillus Ramosus

"The various phases of germination of spores of Bacillus ramosus, as actually observed in hanging drops…

"The various phases of germination of spores of Bacillus ramosus, as actually observed in hanging drops under very high powers. Similar series of phases in the order of the small letters in each case, and with the times of observation attached. At f and g occurs the breaking up of the filament into rodlets." — The Encyclopedia Britannica, 1910

Bacillus Ramosus

"The various phases of germination of spores of Bacillus ramosus, as actually observed in hanging drops…

"The various phases of germination of spores of Bacillus ramosus, as actually observed in hanging drops under very high powers. Similar series of phases in the order of the small letters in each case, and with the times of observation attached. At f and g occurs the breaking up of the filament into rodlets." — The Encyclopedia Britannica, 1910

Bacillus Ramosus

"The various phases of germination of spores of Bacillus ramosus, as actually observed in hanging drops…

"The various phases of germination of spores of Bacillus ramosus, as actually observed in hanging drops under very high powers. Germinating spores in various stages, more highly magnified, and showing the different ways of escape of the filament from the spore-membrane." — The Encyclopedia Britannica, 1910

Bacillus Ramosus

"The various phases of germination of spores of Bacillus ramosus, as actually observed in hanging drops…

An example of brown mold (mucor mucedo). s, spore; m, mycelium; t, gonidiophore; sp, sporangium.

Brown Mold

An example of brown mold (mucor mucedo). s, spore; m, mycelium; t, gonidiophore; sp, sporangium.

"Clostridium—one cell contains two spores." — The Encyclopedia Britannica, 1910

Clostridium

"Clostridium—one cell contains two spores." — The Encyclopedia Britannica, 1910

"Germination of spore of Clostridium butyricum—the axis of growth coincides with the long axis of the spore." — The Encyclopedia Britannica, 1910

Clostridium

"Germination of spore of Clostridium butyricum—the axis of growth coincides with the long axis…

"Scale sporopyll and sporangium of club moss."—Finley, 1917

Spore of club moss

"Scale sporopyll and sporangium of club moss."—Finley, 1917

"A chair of cocci of Leuconostoc mesenterioides, with two "resting spores," i.e. anthrospores." — The Encyclopedia Britannica, 1910

Cocci

"A chair of cocci of Leuconostoc mesenterioides, with two "resting spores," i.e. anthrospores." —…

"Two conidia joined with one secondary conidium."—Finley, 1917

Joined conidia

"Two conidia joined with one secondary conidium."—Finley, 1917

Schizaea pusilla, or Little Curlygrass Fern is a small species of fern in the Curlygrass family (Schizaeaceae). here showing: "a, pinnule with sporangia; b, a sporangium, on larger scale." -Whitney, 1911

Curlygrass Fern

Schizaea pusilla, or Little Curlygrass Fern is a small species of fern in the Curlygrass family (Schizaeaceae).…

Pictured is the cross section of a maple limb affected by <I>Fomes igniarius</I>. A young spore is shown as just emerging at the top of the picture.

Fomes Igniarius Infected Maple Limb

Pictured is the cross section of a maple limb affected by Fomes igniarius. A young spore is shown as…

A bread mold fungus germinating

Bread Mold Fungus Spore Germinating

A bread mold fungus germinating

"In the lower plants the numerous asexual spores which each individual produces are usually alike. Among the ptidophytes, however, certain forms produce asexual spores which differ very much in size." &mdash; Beach, 1909

Heterospory

"In the lower plants the numerous asexual spores which each individual produces are usually alike. Among…

Cone of horsetail.

Cone of horsetail

Cone of horsetail.

"Equisetum sylvaticum: a, a, sheath crowned with teeth; b, branches; c, c, fruiting spikes. 2. Clypeola, bearing sporangia. 3. Spore, with elaters coiled about it." -Whitney, 1911

Wood Horsetail

"Equisetum sylvaticum: a, a, sheath crowned with teeth; b, branches; c, c, fruiting spikes. 2. Clypeola,…

Laminaria saccharina belongs to the group Laminariæ, a group of algæ belonging to the Phæosporeæ, a subdivision of the Phæosphyceæ, or brown seaweeds. The propagative cells are always swarm-spores of similar form and size; and these are produced in unilocular sporangia. The thallus has a stalk, often of considerable thickness, which is attached below to rocks or other substratum by means of rootlike growth, and ends above in a flat lamina, which may be divided or undivided.

Laminaria Saccharina

Laminaria saccharina belongs to the group Laminariæ, a group of algæ belonging to the Phæosporeæ,…

An illustration of powdery mildew showing the ascus containig eight ascospores.

Powdery Mildew Ascus Containing Eight Ascospores

An illustration of powdery mildew showing the ascus containig eight ascospores.

An illustration of powdery mildew showing conidia bearing hypha.

Powdery Mildew Conidia Bearing Hypha

An illustration of powdery mildew showing conidia bearing hypha.

An illustration of the sporocarp and mycelium of powdery mildew.

Powdery Mildew Sporocarp & Mycelium

An illustration of the sporocarp and mycelium of powdery mildew.

An illustration of erysiphe communis, powdery mildew, that is on the epidermis of the leaf of the flower, Indian beet.

Powdery Mildew

An illustration of erysiphe communis, powdery mildew, that is on the epidermis of the leaf of the flower,…

An ear of smutted oats.

Smutted oats

An ear of smutted oats.

The flat, heart shaped body which results from the development of a spore of a fern.

Prothallus (under side)

The flat, heart shaped body which results from the development of a spore of a fern.

"A motile rodlet with one cilium and with a spore formed inside." &mdash; The Encyclopedia Britannica, 1910

Rodlet

"A motile rodlet with one cilium and with a spore formed inside." — The Encyclopedia Britannica,…

Also known as Puccinia graminis. This fungus is a significant detriment to cereal crops. It is currently spreading across Africa, Asia, and the Middle East. This image depicts a a spore of the fungus germinating and producing Sporidia on the tips of small stalks.

Stem Rust

Also known as Puccinia graminis. This fungus is a significant detriment to cereal crops. It is currently…

"Spore-formation in Vibrio-like (c) and Spirillum-like (a, b, d) Schizomycetes." &mdash; The Encyclopedia Britannica, 1910

Schizomycetes

"Spore-formation in Vibrio-like (c) and Spirillum-like (a, b, d) Schizomycetes." — The Encyclopedia…

A germinating spore of smut, a fungus that effects corn crops.

Germinating spore of smut

A germinating spore of smut, a fungus that effects corn crops.

"Spirillum containing many spores (a), which are liberated at b by the breaking up of the parent cells." &mdash; The Encyclopedia Britannica, 1910

Spirillum

"Spirillum containing many spores (a), which are liberated at b by the breaking up of the parent cells."…

"Long rod-like form containing a spore (these are the so-called "Kopfchenbacterien" of German authors)." &mdash; The Encyclopedia Britannica, 1910

Spore

"Long rod-like form containing a spore (these are the so-called "Kopfchenbacterien" of German authors)."…

"Germination of the spore of the hay bacillus&mdash;the axis of growth of the germinal rodlet is at right angles to the long axis of the spore." &mdash; The Encyclopedia Britannica, 1910

Spore

"Germination of the spore of the hay bacillus—the axis of growth of the germinal rodlet is at…

A spore.

Spore

A spore.

"The various phases of germination of spore of <em>Bacillus ramosus</em>, as actually observed in hanging drops under very high powers." — Encyclopediia Britannica, 1910

Sporegerm

"The various phases of germination of spore of Bacillus ramosus, as actually observed in hanging…

An illustration of a germinating spore of the common polypody: sp, exospore; k, first root-hair.

Germinating Spore of the Common Polypody

An illustration of a germinating spore of the common polypody: sp, exospore; k, first root-hair.

An illustration of a germinating spore of the common polypody: sp, exospore; k, first root-hair.

Germinating Spore of the Common Polypody

An illustration of a germinating spore of the common polypody: sp, exospore; k, first root-hair.

Spore of a bread fungus mold

Bread Fungus Mold Spore

Spore of a bread fungus mold

"Germinating spore, with secondary spores or conidia."&mdash;Finley, 1917

Germinating spore

"Germinating spore, with secondary spores or conidia."—Finley, 1917

"Telento spores, one germinating, bearing conidia."—Finley, 1917

Telento Spore

"Telento spores, one germinating, bearing conidia."—Finley, 1917

"Various stages in the development of the endogenous spores in a Clostridium &mdash; the small letters indicate the order." &mdash; The Encyclopedia Britannica, 1910

Spores

"Various stages in the development of the endogenous spores in a Clostridium — the small letters…

"Endogenous spores of the hay bacillus." &mdash; The Encyclopedia Britannica, 1910

Spores

"Endogenous spores of the hay bacillus." — The Encyclopedia Britannica, 1910

"Two secondary spores joined"&mdash;Finley, 1917

Joined spores

"Two secondary spores joined"—Finley, 1917

"One sporophyll with empty sporangia."&mdash;Finley, 1917

Sporophyll

"One sporophyll with empty sporangia."—Finley, 1917

"Cyst containing spores, 5. cyst, 7. spores, 8. ducts"—Finley, 1917

Sporozoa Containing Spores

"Cyst containing spores, 5. cyst, 7. spores, 8. ducts"—Finley, 1917

"Vibrio form with spore." &mdash; The Encyclopedia Britannica, 1910

Vibrio

"Vibrio form with spore." — The Encyclopedia Britannica, 1910

"Zygospore from two conidia conjoined."&mdash;Finley, 1917

Zygospore

"Zygospore from two conidia conjoined."—Finley, 1917