Transactions of the American Microscopical Society, Tom 32American Microscopical Society, 1913 |
Z wnętrza książki
Wyniki 1 - 5 z 47
Strona 32
... formation of aplanospores or akinetes by A. algae belonging to this type are Vaucheria geminata , Vaucheria sessilis , Draparnaldia plumosa , Tetraspora lubrica , and Stigeoclo- nium lubricum varians . II . SPRING ANNUALS . These are ...
... formation of aplanospores or akinetes by A. algae belonging to this type are Vaucheria geminata , Vaucheria sessilis , Draparnaldia plumosa , Tetraspora lubrica , and Stigeoclo- nium lubricum varians . II . SPRING ANNUALS . These are ...
Strona 40
... formation of non - motile spores in Pithophora seemingly occurs under any and all conditions . This represents the one extreme . At the other is Zygnema pectinatum which produced aplanospores but once in the five years and then they ...
... formation of non - motile spores in Pithophora seemingly occurs under any and all conditions . This represents the one extreme . At the other is Zygnema pectinatum which produced aplanospores but once in the five years and then they ...
Strona 41
... formation makes them at once of unusual interest to the general student with the microscope . Many species have spores of five morphological sorts . In some species these occur in regular succession upon one sort of host - plant but in ...
... formation makes them at once of unusual interest to the general student with the microscope . Many species have spores of five morphological sorts . In some species these occur in regular succession upon one sort of host - plant but in ...
Strona 49
... formation whether within or without the spore . Of the four sorts of spores borne in sori only one is common to all species , this one ( together with the basidiospores ) compris- ing the full life - cycle in some species . This stage ...
... formation whether within or without the spore . Of the four sorts of spores borne in sori only one is common to all species , this one ( together with the basidiospores ) compris- ing the full life - cycle in some species . This stage ...
Strona 77
... formation to 24. These zoospores germinate without conjugation , and produce plants similar to young Cutleria in nature , and with 24 chromosomes . EXPERIMENTS ON THE GERMINATION OF TELEUTOSPORES Dietel ( Centralbl . Bakt . II . 31:95 ...
... formation to 24. These zoospores germinate without conjugation , and produce plants similar to young Cutleria in nature , and with 24 chromosomes . EXPERIMENTS ON THE GERMINATION OF TELEUTOSPORES Dietel ( Centralbl . Bakt . II . 31:95 ...
Inne wydania - Wyświetl wszystko
Kluczowe wyrazy i wyrażenia
acetabulum Actinocephalus AMERICAN MICROSCOPICAL SOCIETY amitosis animals antheridium Appendages asci ascus Biological body branches cells cephalont chromosomes Clinostomum marginatum Colorado columella conidia Conidiophores Crawley cylindrical cysts cytoplasm Decatur dehiscence deutomerite diameter digitiform disease division Ehrenberg Ellis elongate Erysiphe Erysiphe cichoracearum DC Erysiphe graminis Erysiphe polygoni DC ether Fig Fig Fig formation Frenzel Friends Should Patronize fungi fungus fusion gametes genera genus globose Gregarina haustoria host hyphae infected laboratory Lake Hakone larvæ larval Leger Leidy length Magn material maturity Members and Friends membrane method Microsphæra alni Wallr mitotic mycelium nuclear offspring Ohio oogonium organs ovoid parasite Patronize Our Advertisers periblem perithecium Ph.D plants PLATE portion posterior powdery mildews produced PROF protomerite reproduction rust Salm Schneider species specimens Sphærotheca humuli DC spherical Sporangia Sporangiophores sporangium spores sporocysts sporoducts sporont stage Stenophora subglobose teliospores tion Uncinula wall width Zool Zygospores
Popularne fragmenty
Strona 267 - Body cylindro-fusiform. Superior division presenting four sides of a hexahedron, subacute. Nuclear body of inferior division transparent, globular or elliptical, containing several coarse granules. Length from 1/66 to Yt, lines; head 1/400 in.
Strona 116 - Reproduction asexually by conidia produced either solitary or in chains Conidiophorae Suborder Sporangiophorae I. Sporangia generally only of one kind, spherical or pyriform, with a membrane that dissolves or fractures easily. Sporangioles with persistent membranes occur very rarely and in such cases are disposed without order along the principal sporangiophore. The septum separating the sporangiophore from the sporangium arches in the interior of the latter to form a columella. Zygospores naked...
Strona 207 - Known bondholders, mortgagees, and other security holders, holding 1 per cent or more of total amount of bonds, mortgages or other securities: (If there are none, so state.) None.
Strona 282 - processes of the epimerite disappearing shortly after the animal frees itself from the intestinal wall of the host, but the conical part persists in the sporont stage, giving a symmetrical margin to the front of the protomerite.
Strona 274 - ... the body ; expanded individual with a protomerite equal to or longer than the deutomerite, the anterior fourth of the protomerite hemispherical to subglobose, below which is an elevated flange-like portion, remaining...
Strona 59 - Characterized, with a few exceptions, by a dingy-white, membranous peridium, which elongates into a tubular form and tends to rupture along the sides; by large peridial cells usually conspicuously sculptured on the inner and side walls (see Fig. 4, a) ; by aeciospores with colored walls and evident germ-pores4; and by teliospores with hyaline pedicels of considerable length, the outer portions of which swell in moisture and become gelatinized to form a jelly-like matrix in which the spores appear...
Strona 159 - Ill., received his education at the University of Michigan, and began the practice of medicine at St. Louis in 1895. At the time of his death he was Professor of General Medicine in the Medical Department of St. Louis University, was president of the consulting staff of the City Hospital, medical director of the St. Louis Society for the Relief and Prevention of Tuberculosis, a member of the St. Louis Medical Society, Missouri State Medical Association, American Medical Association, Medico-psychological...
Strona 122 - ... without order along the principal sporangiophore. The septum separating the sporangiophore from the sporangium arches in the interior of the latter to form a columella. Zygospores naked or surrounded by appendages Mucoraceae II. Sporangia as with the Mucoraceae but of two kinds: the one multispored, with membrane that dissolves, leaving only a naked columella ; the other (sporangioles) few-spored, with persistent membrane, often without columella, caducous. The sporangioles are disposed at the...
Strona 234 - bridge" for the mildews on B. racemosus and B. commutatus. Salmon tested .this in one case by infecting B. hordeaceus with conidia from B. racemosus. The conidia produced on the former were then used to infect B. commutatus. Similarly Steiner regards Alchemilla pastoralis as a "bridge" for Spharotheca humuli to pass from A.
Strona 267 - ... gregarines remarkable for the small size of the head and hence the species may be named Gregarina microcephala. The body is clavate; the head like a watch crystal with a little ball at the summit. Length 0.35 mm. by ol wide; head 0.012 long by 0.04 wide.