1. |
Acaulon granulosum, a new species in theAcaulon muticumcomplex: a comparison and key to Australian species |
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Journal of Bryology,
Volume 15,
Issue 2,
1988,
Page 257-268
StoneIlma G.,
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摘要:
AbstractA new species,Acaulon granulosum, is described from Victoria and Western Australia. It is compared with other species in theAcaulon muticumcomplex from which it differs in the larger spores with coarsely warty ornamentation, the costa excurrent in a reddish recurved cusp and the mostly larger lamina cells. A key to Australian smooth-celledAcaulonspecies is provided.
ISSN:0373-6687
DOI:10.1179/jbr.1988.15.2.257
出版商:Taylor&Francis
年代:1988
数据来源: Taylor
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2. |
Cinclidotus nyholmiae, a new species from KöprülüCanyon National Park (Antalya) in Turkey |
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Journal of Bryology,
Volume 15,
Issue 2,
1988,
Page 269-273
ÇetinBarbaros,
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摘要:
AbstractC. nyholmiaeB.çetin is described as a new species from KöprülüCanyon National Park (Antalya) in Turkey. Its closest relative seems to beC. pachylomaSalm., from which it differs La. in having one row of guide cells throughout the leaf nerve, larger mid-leaf cells and leaves slightly twisted and spreading when dry.
ISSN:0373-6687
DOI:10.1179/jbr.1988.15.2.269
出版商:Taylor&Francis
年代:1988
数据来源: Taylor
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3. |
Racomitrium afoninaesp. nov. from the Chukotka peninsula, U.S.S.R. |
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Journal of Bryology,
Volume 15,
Issue 2,
1988,
Page 275-279
FrisvollArne A.,
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ISSN:0373-6687
DOI:10.1179/jbr.1988.15.2.275
出版商:Taylor&Francis
年代:1988
数据来源: Taylor
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4. |
Two new species ofCololejeuneafrom Bhutan |
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Journal of Bryology,
Volume 15,
Issue 2,
1988,
Page 281-287
GrolleRiclef,
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摘要:
AbstractTwo species ofCololejeunea(Spruce) Schiffn. from Bhutan are described and figured as new to science:C.(subg.Cololejeunea)bhutanicaGrolle et Mizut. andC.(subg.Leptocoleasect.Goebelianae)longianaGrolle et Mizut.
ISSN:0373-6687
DOI:10.1179/jbr.1988.15.2.281
出版商:Taylor&Francis
年代:1988
数据来源: Taylor
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5. |
Mosses from the Nandi Hills, Mysore State, India |
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Journal of Bryology,
Volume 15,
Issue 2,
1988,
Page 289-291
TownsendC. C.,
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摘要:
AbstractTwenty-five species of moss are recorded from the Nandi Hills, Mysore State.
ISSN:0373-6687
DOI:10.1179/jbr.1988.15.2.289
出版商:Taylor&Francis
年代:1988
数据来源: Taylor
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6. |
Mosses from Kashmir |
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Journal of Bryology,
Volume 15,
Issue 2,
1988,
Page 293-297
TownsendC. C.,
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摘要:
AbstractThirty-eight mosses are recorded from Kashmir, 10 apparently new to the state of Jammu and Kashmir.
ISSN:0373-6687
DOI:10.1179/jbr.1988.15.2.293
出版商:Taylor&Francis
年代:1988
数据来源: Taylor
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7. |
Three new records of PhilippineFissidens |
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Journal of Bryology,
Volume 15,
Issue 2,
1988,
Page 299-301
MisaFe,
TanB. C.,
IwatsukiZ.,
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摘要:
AbstractFissidens gymnogynusBesch.,F. mangarevensisMont. andF. obscurireteBroth. et Par. are reported new to the Philippine moss flora. Their discoveries greatly strengthen the continental Asiatic affinity of the local moss flora.
ISSN:0373-6687
DOI:10.1179/jbr.1988.15.2.299
出版商:Taylor&Francis
年代:1988
数据来源: Taylor
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8. |
Cytological diversity inPellia endiviifolia(Dicks.) Dum |
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Journal of Bryology,
Volume 15,
Issue 2,
1988,
Page 303-314
NewtonM. E.,
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摘要:
AbstractExtensive cytological variation between British populations ofPellia endiviifolia(Dicks.) Dum. (n = 8+x/y) permits the recognition of six distinct karyotypes; one of them found also in Greece and another in the U.S.S.R. Although based on typically small amounts of constitutive heterochromatin, Giemsa C-banding patterns serve to identify each of three chromosomes, 1, 6 and 9, as dimorphic or polymorphic. Relative proportions of chromosomes differ between karyotypes and further variation relates toa nucleolar organiser region (NOR) on chromosome 6 of one population in addition to the NOR generally located in chromosome 7. These findings have repercussions intaxonomy and reproductive behaviour that are discussed in detail.
ISSN:0373-6687
DOI:10.1179/jbr.1988.15.2.303
出版商:Taylor&Francis
年代:1988
数据来源: Taylor
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9. |
Growth and reproduction in the leafy hepaticPtilidium pulcherrimum(G. Web.) Vainio during a 4-year period |
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Journal of Bryology,
Volume 15,
Issue 2,
1988,
Page 315-325
JonssonBengt gunnar,
SöderströmLars,
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摘要:
AbstractAnnual growth rate and spore and capsule production was studied in 50 colonies of the epixylic hepatic,Ptilidium pulcherrimumin northern Sweden. Radial growth rate was independent of colony size but varied from year to year (mean value 5.2 mm year−1, range 3.5–6.3 mm year−1). Size at first sporophyte production was estimated to be 68 cm2and the age of first reproduction was estimated to be about 9 years. It was estimated that antheridia were formed the third year. No correlation between growth rates and reproduction was observed. Capsule density as well as capsule and spore production increased significantly with increased colony size. Differences between years in spore and capsule production (up to six-fold) were observed. The mean number of spores per capsule was 27 400 but significant differences between colonies (range from 18 000 to 44 000) were observed.
ISSN:0373-6687
DOI:10.1179/jbr.1988.15.2.315
出版商:Taylor&Francis
年代:1988
数据来源: Taylor
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10. |
Influences of mature plants and desiccation on germination of spores and gametophyticfragments ofTortula |
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Journal of Bryology,
Volume 15,
Issue 2,
1988,
Page 327-342
MishlerBrent D.,
NewtonAngela E.,
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摘要:
AbstractThe germination and establishment abilities of different types of propagules under natural conditions is an area in bryophyte reproductive biology that is largely unknown. In some species gametophyte fragments, rather than spores, may be primarily responsible for establishment of new colonies in nature, and the presence of other mosses may have an effect on establishment processes. These ideas were tested experimentally using four species ofTortulagrown in a glasshouse under semi-natural conditions. The relative germination and growth abilities of spores and gametophytic fragments were tested under each combination of the following treatments: (1) continuous hydration (using a mist system), or periodic drying; (2) substrate of bare sand, a clump ofDicranum scoparium, or (for spores only) the clump ofTortulafrom which sporophytes were taken. Fragments produced new shoots much more quickly than spores under either hydration condition but spores germinated at a higher rate. Germination rates of both spores and fragments were greatly reduced (usually to zero) in clumps ofTortulaorDicranumunder either hydration condition. Some differences between species were noted. In a further experiment filter-sterilized water extracts of each species were applied to spores on agar. Again, strong effects on spore germination and protonemal growth were noted. Patterns of inhibition differed between species and reflected those found in the previous experiment, indicating that the inhibition effect may be due to a water soluble chemical rather than the physical properties of the moss clumps. These studies present the first experimental evidence for the chemical inhibition of spores by mature plants. When taken together with previous reports of chemical interactions among protonemal systems, considerable ecological significance of these results is suggested.
ISSN:0373-6687
DOI:10.1179/jbr.1988.15.2.327
出版商:Taylor&Francis
年代:1988
数据来源: Taylor
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