. Plant studies; an elementary botany. Botany. THALLOPHYTES : FUNGI plant. In other words, a Lichen is not an individual, but a firm of two individuals very unlike each other. This habit. Fig. 371), A coniDion liclini < Plnj^cUi) i.n-oviiii^f nn liurk, slinw iii^ tin- sprciHlini; tliiilltis tmrl tlio iiuracroiis dark disks (apiiflu-fial Ituarin^,' tlie jisci.—(JoLDiiKRfiEli. of living together has been called symbiods, and the indi- viduals entering into this relation are called symhionts.. Please note that these images are extracted from scanned page images that may have been digitally en

. Plant studies; an elementary botany. Botany. THALLOPHYTES : FUNGI plant. In other words, a Lichen is not an individual, but a firm of two individuals very unlike each other. This habit. Fig. 371), A coniDion liclini < Plnj^cUi) i.n-oviiii^f nn liurk, slinw iii^ tin- sprciHlini; tliiilltis tmrl tlio iiuracroiis dark disks (apiiflu-fial Ituarin^,' tlie jisci.—(JoLDiiKRfiEli. of living together has been called symbiods, and the indi- viduals entering into this relation are called symhionts.. Please note that these images are extracted from scanned page images that may have been digitally en Stock Photo

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. Plant studies; an elementary botany. Botany. THALLOPHYTES : FUNGI plant. In other words, a Lichen is not an individual, but a firm of two individuals very unlike each other. This habit. Fig. 371), A coniDion liclini < Plnj^cUi) i.n-oviiii^f nn liurk, slinw iii^ tin- sprciHlini; tliiilltis tmrl tlio iiuracroiis dark disks (apiiflu-fial Ituarin^, ' tlie jisci.—(JoLDiiKRfiEli. of living together has been called symbiods, and the indi- viduals entering into this relation are called symhionts.. 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 perfectly resemble the original work.. Coulter, John Merle, 1851-1928. New York, D. Appleton and Company

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RMRE1JBR–. Plant studies; an elementary botany. Botany. 304 PLANT STUDIES 198. The antheridium.—The male organ of the Bryophytes is called an antheridium, just as among Thallophytes, but it has a very different structure. In general among the. 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 perfectly resemble the original work.. Coulter, John Merle, 1851-1928. New York, D. Appleton and Company

RMRE1JGE–. Plant studies; an elementary botany. Botany. THALLOPHYTES: FUNGI 281 wall, and forms what is called the " black rust," which ap- pears late in the summer on wheat stubble. These spores are the resting spores, which last through the winter and germinate in the following spring. They are called teleuto- spores, meaning the " last spores " of the growing season. They are also called " winter spores," to distinguish them from the uredospores or " summer spores." At first this teleutospore-bearing mycelium was not recognized to be identical with the uredosp

RMRE1JE1–. Plant studies; an elementary botany. Botany. THALLOPHYTES : FUNGI 291 In certain conditions, however, these slimy bodies come to rest and organize most elaborate and often very beau- tiful sporangia, full of spores (Fig. 267). These varied and easily preserved sporangia are used to classify the. Fig. 267. Three common slime moulds (Myxomycetes) on decaying wood : to the left above, groups of the sessile sporangia of Trichia ; to the right above, a group of the stalked sporangia of Stemonitis, with remnant of old Plasmodium at base ; below, groups uf sporangia of Hemiarcyria, with a Plasmodiu

RMRE1JJ5–. Plant studies; an elementary botany. Botany. THALLOPHYTES: FUNGI 275. a little sphere, which suggested the name Microsplmra (Fig. 241). The heavy wall of the ascocarp bears beauti- ful branching hair-like appendages (Fig. 242). Bursting the wall of this spore fruit several very delicate, bladder-like sacs are extruded, and through the transparent wall of each sac there may be seen several spores (Fig. 242). The ascocarp, there- fore, is a spore case, just as is the cystocarp of the Eed Algaj (§ 174). The delicate sacs within are the asci, a word meaning " sacs," and each ascus is e

RMRE1JMH–. Plant studies; an elementary botany. Botany. THE GREAT GROUPS OF ALG^E 261 fore, two sorts of asexual spores are produced: (1) the • tetraspores, developed in ordinary sporangia; and (2) the carpospores, developed in the cystocarp, which has been produced as the result of fertilization. OTHER CHLOROPHYLL-CONTAINING THALLOPHYTES 175. Diatoms.—These are peculiar one-celled forms, which occur in very great abundance in fresh and salt waters.. Fig. 230. A group of Diatoms : c and d, top and side views of the same form; e, colony of stalked forms attached to an alga;/ and g, top and side views of

RMRDHG44–. Plant studies; an elementary botany. Botany. THALLOPHYTES : FUNGI plant. In other words, a Lichen is not an individual, but a firm of two individuals very unlike each other. This habit. Fig. 371), A coniDion liclini < Plnj^cUi) i.n-oviiii^f nn liurk, slinw iii^ tin- sprciHlini; tliiilltis tmrl tlio iiuracroiis dark disks (apiiflu-fial Ituarin^,' tlie jisci.—(JoLDiiKRfiEli. of living together has been called symbiods, and the indi- viduals entering into this relation are called symhionts.. Please note that these images are extracted from scanned page images that may have been digitally en

RMRE1JTR–. Plant studies; an elementary botany. Botany. THALLOPHYTES : ALGiE 227 A-x- B O-"' plex plants consist of very many cells. It is necessary to know something of the ordinary living plant cell before the bodies of Algae or any other plant bodies can be under- stood. Such a cell if free is approximately spherical in outline (Fig. 204), but if pressed upon by contiguous cells may be- come variously modified in form (Fig. 200). Bounding it there is a thin, elastic wall, composed of a sub- stance called cellulose. The cell wall, therefore, forms a delicate sac, which contains the living substa

RMRE1JCC–. Plant studies; an elementary botany. Botany. THALLOPHYTES: FUNGI 297 pendently of the fungus. In fact, the enmeshed Algae are often recognized as identical with forms living independ- ently, those thus used being various Blue-green, Protococ- cus, and Conferva forms (see p. 159). On the other hand, the fungus symbiont has become quite dependent upon the alga, and its germinating spores do not develop far unless the young mycelium can lay hold of suitable Algse. At certain times cup-like or disk-like bodies appear on the surface of the lichen thallus, with brown, or black, or more brightly-co

RMRE1JHR–. Plant studies; an elementary botany. Botany. THALLOPHYTES: FUNGI 277. Fig. 244. Head of rye attacked by " er- got" (a), peculiar grain-like masses replacing the grains of rye ; also a mass of "ergot" germinating to form spores (b).—After Tuxasne. Fig. 246. A cup-fungns (Pitya) grow- ing on a spruce (Picea).— After Rehm. In some of these forms the ascocarp is completely closed, as in the lilac mildew; in others it is flask-shaped; in others, as in the cup-fungi, it is like a cup or disk ; but in all the spores are inclosed by a delicate sac, the ascus.. Please note that th