摘要:

The sixty new taxa described inMusci Indiciare reviewed. As a result of validation of 54 of these by plates alone, authorities, original specimens and provenance of many have been widely misinterpreted. Evidence from published material, unpublished correspondence and herbarium material demonstrates that W. H. Harvey (1836) is the sole validating author of most of the names; three were validated by J. D. Hooker in 1837, and two names jointly by J. D. Hooker and Harvey in 1840. None was validated by W. J. Hooker, in the past often considered to be the author of some of the names. It is shown thatMusci Indicinames should be typified by lectotypes; recent typifications of four of the names by ‘holotypes’ and six out of eight published ‘lectotypes’ are untenable as the specimens selected were not original material studied by Harvey, and should be superseded by new lectotypes. Five specimens are selected as new lectotypes. Original material, mostly in Harvey's herbarium in TCD, is identified as most suitable for future lectotypification of the other names. Types for the three names based solely onRoylematerial are located in LIV and BM. Original Harvey material is also preserved in GL, but most of theWallichcollections in BM, E and elsewhere are not part of the original material. ForNeckera blandano suitable type specimen was located; the original published plate is selected as lectotype with a specimen in BM as a supporting ‘epitype’. Many of the original localities published in 1840 as ‘Nepal’ are shown to be erroneous. As far as possible these are corrected but for some taxa provenance remains doubtful. Twenty‐two of the new names are shown not to have been based on material from Nepal; as a result ten species(Acanthorrhynchium papillatum, Brachythecium kamounense, Chaetomitriopsis glaucocarpa, Meiothecium microcarpum, Mitthyridium repens, Rozea fulva, Splachnobryum flaccidum, Sterophyllum radiculosum, Trichosteleum boschii and Trismegistia lancifolia)andTrismegistia lancifolia)are deleted from the Nepal checklist. Twenty‐eight of the new species are considered to be reliably based on material from Nepal, and a further five doubtfully so.Rozea microcarpaBroth. is shown to be an synonym ofR. fulva(Harv.) M. Fleisch. Past taxonomic confusion betweenHypnum cordatumHarv. andNeckera cordata[Hook. ex] Harv. is untangled; the first is shown to be a synonym ofEurhynchium hians(Hedw.) Sande Lac. and the second is the basionym ofPenzigiella cordat

ISSN:0024-4074    

DOI:10.1111/j.1095-8339.1995.tb00726.x

出版商:Blackwell Publishing Ltd    

年代:1995

数据来源: WILEY

摘要:

Anthesis inNymphaea capensisvar.zanzibariensisis diurnal with flowers opening and closing for three consecutive days. On the first day of anthesis, the stigmatic papillae secrete fluid and the outermost anthers are dehiscent. On the second day of anthesis the stamens form a cone above the dry stigmatic cup. The middle stamens open and turn outward. On the third day of flowering, all the stamens open and the dry stigmatic cup is exposed. The flowers are homogamous and not protogynous as the otherNymphaea.The gynoecium of the self‐compatibleN. capensisvar.zanzibariensis, is characterized by a wet papillate stigma, a short hollow style, and secretory cells on the ventral surface of the ovary. The pollen is released on the receptive stigma. Following initial growth in intercellular spaces in the transmitting tract of the stigma, pollen tubes travel through the stylar canal and into the ovar

ISSN:0024-4074    

DOI:10.1111/j.1095-8339.1995.tb00727.x

出版商:Blackwell Publishing Ltd    

年代:1995

数据来源: WILEY

摘要:

The chemical composition of floral scent in eight bat‐pollinated species belonging to six different plant families was investigated. Floral scent was collected by headspace trapping using porous adsorbents and the chemical composition determined by coupled gas chromatography‐mass spectrometry. In all species except one the floral scent was found to include sulphur‐containing compounds, of which several are reported for the first time in floral scents. Three species contained mushroom‐like smelling fatty acid derivatives with a C8‐skeleton. Such flowers may be recognized by pollinators as humid environments in otherwise dry surroundings. The presence of similar or chemically closely related sulphur containing compounds in floral scent of bat‐pollinated plant species from differing families may represent a case of convergent evolution in scent composition and an adaptation to attract this specific group of pollinators with similar sensory

ISSN:0024-4074    

DOI:10.1111/j.1095-8339.1995.tb00728.x

出版商:Blackwell Publishing Ltd    

年代:1995

数据来源: WILEY

摘要:

Two new species,Dicoma gillettiiandDicoma scoparia(Asteraceae), both from Somalia, are described and illustrated. The differences between the new species and related taxa are listed.

ISSN:0024-4074    

DOI:10.1111/j.1095-8339.1995.tb00729.x

出版商:Blackwell Publishing Ltd    

年代:1995

数据来源: WILEY

摘要:

Studies onAcacia caven(Mol.) Mol. in central Argentina indicate that the species is polygamous (andromonoecious), some plants having a high proportion of staminate heads. Though pollen/ovule ratios of flowers, inflorescences and plants are at a level common for ‘facultative xenogamic’ systems, controlled pollination shows a marked xenogamy. The ratio between pollen grains in the polyad and the maximum number of seeds per pod is close to one. Observations support the idea of the inflorescence as a specialized reproductive unit with gynoecia functioning as fixed modules in which all or none of its ovules develop into seeds. Mass flowering prior to the growing season, the absence of other floral resources in the community, the high degree of fruiting limitations and scarce insect visitation suggest that, as in otherAcacia, the reproductive system ofAcacia caveninvolves a great sacrifice of floral resour

ISSN:0024-4074    

DOI:10.1111/j.1095-8339.1995.tb00730.x

出版商:Blackwell Publishing Ltd    

年代:1995

数据来源: WILEY

摘要:

Boissier described several taxa inAnthriscus, summarized in hisFlora orientalisaccount. The names includeA. lamprocarpa, A. kotschyi, A. ruprechtii, A. tenerrima, A. t.var.leiocarpa, A. anatolica, A. macrocarpa, A. nemorosavar.mollis, A. n.var.glabra;the hst four are still recognized as separate species. These names are typified in this paper, based on the material in Boissier herbarium at G.

ISSN:0024-4074    

DOI:10.1111/j.1095-8339.1995.tb00731.x

出版商:Blackwell Publishing Ltd    

年代:1995

数据来源: WILEY

摘要:

Nuphar luteum(Nymphaceae) is a water lily indigenous to the glacial lakes of the Rocky Mountains of the western United States. The seeds are negatively buoyant, but are dispersed across the water surface in two different manners: (1) within the floating fruits, and (2) within a buoyant, but water‐soluble matrix that surrounds the seeds. Seed dispersal via fruits results in a clumped distribution, while seed dispersal mediated by the buoyant matrix results in scattered seed distributions. Experimental release of tagged fruits and seeds in nature show that fruit and seeds can travel up to 80 m/h on the water surface. Although seeds only float for about 72 h, this is adequate time for dispersal, especially in small glacial lakes that are connected via streams. By comparing historical lake‐specific population distributions ofN. luteurnusing aerial photographs taken over a 36 year period we found little change in the overall intralake distribution of each population. We believe these historical patterns to be related to the mechanisms of fruit and seed disper

ISSN:0024-4074    

DOI:10.1111/j.1095-8339.1995.tb00732.x

出版商:Blackwell Publishing Ltd    

年代:1995

数据来源: WILEY

ISSN:0024-4074    

DOI:10.1111/j.1095-8339.1995.tb00726a.x

出版商:Blackwell Publishing Ltd    

年代:1995

数据来源: WILEY